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Revision of "Dieffenbachia" (Araceae) of Mexico, Central America, and the West Indies<br />
Author(s): Thomas B. Croat<br />
Reviewed work(s):<br />
Source: Annals of the Missouri Botanical Garden, Vol. 91, No. 4 (Dec., 2004), pp. 668-772<br />
Published by: Missouri Botanical Garden Press<br />
Stable URL: http://www.jstor.org/stable/3298554 .<br />
Accessed: 01/03/2012 09:14<br />
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REVISION OF Thomas B. Croat2<br />
DIEFFENBACHIA (ARACEAE)<br />
OF MEXICOv CENTRAL<br />
AMERICAv AND THE WEST<br />
INDIES1<br />
ABSTRAC T<br />
The genus Die,ffienb(lchia Schott has approximately 135 species, most of them occurring in South America. Major<br />
centers of diversity for the genus include Colombia with 37 species, Ecuador (34), Peru (30), Brazil (27), Panama (20)<br />
and Costa Rica (13). 'lahere are 26 species in Central America, with 20 species (77Wo) new to science. These are D.<br />
burgeri Croat & Grayum, D. copensis Croat, D. crebripistillata Croat, D. davidsei Croat 8z Grayum, D. fortunensis Croat<br />
D. fosteri Croat, D. gr(ll(l(lntesiae Croat, D. horichii Croat 8z Grayum, D. isthrnia Croat, D. killipii Croat, l). lutheri Croat<br />
D. nitidipetiolat(l Cloate D. obscurinervia Croat, D. panarnensis Croat, and D. standleyi Croat describe(l herein and D.<br />
beachiana Croat & (,rayum, D. concinna Croat 8z Grayum, D. grayurnii Croat, D. harernelii Croat 8z (Jlayum, and D.<br />
tonduzii Croat & (rlayLllzl (lescribed elsewhere. Most species range from Nicaraguato Panama. Belize has only 1 species<br />
of Dieffenbachia; Mexi( o, E1 Salvador, and Guatemala have 2 species, followed by Honduras (3), Nicalarua (6), Costa<br />
Rica (13), an(l Panalssa (2()). Only a few Central American species could be considered wi(lespread. Altsong the most<br />
widespread are 1). oe rste *lii Schott and D. wendlandii Schott, both of which range from Mexico to Panarna, as well as<br />
D. nitidipetiolat(l as(1 1). tonduzii, which range from Honduras to Ecuador. Species enflellsism is hiXrh, especially in<br />
Costa Rica (t3) an(l lllstllna (9). A total of 9 species are shared hetween Panama and Costa lWie a. Eiglst s)ecies, almost<br />
31Wo of the total, [-tilltt' into South America. These are D. david ei, D. isthmia, D. killi)ii, 1). Iongis/)(lth(l, D. nitidipetiolata,<br />
D. obscurirl(rli(l, D. seguine, and D. tonduzii. Most of llsese only extend to Colorzllsia, lout lls^ee species, D.<br />
killipii, D. nitidi/)( tiol(lt(ln and D. tonduzii, range to Ecuador. 0tily D. killipii ranges to tlse ( asteln slo^)e of the Andes.<br />
Die,ffienbachi(l ()gllirl() Itlnges into Brazil and Bolivia, from the Wt st Indies.<br />
lVey1l)orfls: Ala(etle, Central America, Dieffenbachia, Mexi(o, South America, West lls({ies.<br />
The family Ara( eae is worldwide in distribution, Schott ex K. Krause). Im)ortant lo( a1 centers of<br />
but most species o( ( ur in tropical areas. Its centers generic endemism in the family il( lude Brazil,<br />
of distribution in(lude both Asia and America whieh has four endemic genera (Bop,tl1era Mayo &<br />
(Croat, 1979), with 31 genera in the Americas and Ni(olson, Dracontioide.s Ellgl., Ge(lrlllzl N. E. Br.,<br />
28 found in Asia. There are 16 genera in Africa, Zomicarpa Schott), and the Indomalaysian region,<br />
Madagascar, and the Seychelles. A few genera are with 14 endemic genera. At least 2?550 species,<br />
restricted to tem)erate regions of the Northern replesenting four-fifths of the totaln o(cur in the<br />
Hemisphere, inc luding the Mediterranean region Neotropics. The Central American flola comprises<br />
(Calla L., Lysichiton Schott, Orontium L., Peltandra 19 genera within the Araceae.<br />
Raf., Sym/)loc(lrl)us Salisb. ex Nutt.), including the With an estimate of more than 955() species in<br />
Mediterranean region (Arisarum Mill., Ambrosina Latin America, the Araceae are one of the largest<br />
Bassi, Arum 1,., Dracunculus Mill., Helicodiceros families of flowering plants in the legion. Yet no<br />
1 This revision could not have been completed without the dedicated and able assistance of my lolllser co-worker,<br />
Petra S(hmi(lt, who participated in nearly every phase of the work. She continued the research efforts lJnabated while<br />
I was in the lield. Monica Carlsen and Emily Yates, former and present Research Assistants, respe(tively, were responsible<br />
lol firlal editing and revision of the manuscript, including final preparation of legend images. Fred Keusenkothen<br />
was responsible for preparation of scanned images. Special thanks also must go to Cheryl Neurnan and Emily<br />
Colletti, llesearch Greenhouse managers during the course of this work, who maintained hundreds of Dieffenbachia<br />
collectiolss in healthy condition. Very special thanks also go to my colleague and fellow aroid specialist Mike Grayum,<br />
whose kllowledge of the Costa Rican Araceae is unparalleled. Dan Nicolson, from the U.S. National Herbarium, and<br />
Charlotte Taylor, M0, assisted with nomenclatural issues. John Rawlins, from the Carnegie Museum, Pittsburgh, determined<br />
most of the beetles collected for this revision of Dieffenbachia. Thanks also go to Helen Young for beetle<br />
determillations and for information on reproductive biology. Elenor Sauer has proofread or written Latin diagnoses for<br />
all of the new species. Her expert assistance is greatly appreciated. Finally, I would like to thank my wife, Patricia,<br />
who has put up with my long absences while doing fieldwork for more than three decades. She was always available<br />
as an editor and to solve computer and database problems.<br />
2 p. A. Schulze, Curator of Botany, Missouri Botanical Garden, P.0. Box 299, St. Louis, Missouri 63166-0299, U.S.A.<br />
ANN. MISSOURI BOT. GARD. 91: 668-772. 2004.
Volume 91, Number 4<br />
2004<br />
Croat<br />
Revision of Dieffenbachia<br />
other family is so poorly known taxonomically. with the lowest totals just north of the San Juan<br />
Plants exhibit considerable morphological plasticity depression (Nicaragua), followed by a marked inat<br />
all stages of development. Many of the genera, crease approaching the South American continent.<br />
especially the hemiepiphytic genera Rhodospatha (In this treatment, Central America is defined as all<br />
Poepp., Monstera Adans., and Syngonium Schott, the area between Mexico and Colombia, whereas<br />
exhibit complex patterns of heterophylly, with dras- Middle America is all the area between Mexico and<br />
tically different morphology at different stages of Panama.) Mexico has 2 species, Guatemala (2), Bedevelopment<br />
(Croat, 1981 [1982]; Ray, 1981, lize (1), Honduras (3), E1 Salvador (2), Nicaragua<br />
1987). Most members of the family have succulent (6), Costa Rica (13), and Panama (20) (Table 1).<br />
parts, making them difficult to collect and preserve. Endemism is high, especially in Costa Rica with 3<br />
Dieffenbachia is one of several medium-sized endemic species and Panama with 9. A total of 7<br />
genera in the Araceae, with an estimated 135 spe- species are shared between Panama and Costa<br />
cies. This revision is the first major review of Dief- Rica. Just under one-third (31Wo) of Central Amerfenbachia<br />
for Central America since Adolf Engler's ican species of Dieffenbachia range into South<br />
(1915) generic treatment in Das Pf anzenreich. America, these being D. davidsei, D. isthmia, D.<br />
Dieffenbachia is one of the most important genera killipii, D. Iongispatha, D. nitidipetiolata, D. obscuof<br />
understory herbs in the family, and it is often a<br />
dominant component of humid to wet tropical forrinervia,<br />
D. seguine, and D. tonduzii.<br />
ests, especially from sea level to 1500 m. It inhabits<br />
life zones ranging through Premontane moist for-<br />
MATERIALS AND METHODS<br />
est (P-mf), Tropical moist forest (T-mf), Premontane This revision is based on more than 29 years of<br />
wet forest (P-wf), Tropical wet fore.st (T-wf), and Pre- field studies in Central and South America, bemontane<br />
rain forest (P-rf) (Holdridge, 1967). While tween 1967 and 1996. All but one species were<br />
most spevies occur in virgin humid forests, the ge- studied live in the field or under cultivation at the<br />
nus is known from freshwater swamps, stream Missouri lAotani(al Garden. The descriptions have<br />
tanks, reglowth forest, among lo(k out(rosX aIl(l I)een prepale(l flom }oth living and drie(l spe(io(easionally<br />
on roa(l l)anks. It often ( onstitutes the mens. The ex(el)tion is D. fo.steri, where the demost<br />
tonsl)i(uous elelllent of the un(lelstoly vege- s(ril)tioll was lase(l solely on the tyl)e sI)e(inen.<br />
tation })e(ause of its a}un(la-l(e, fe(luellt (olollial rRle use of ("(llie(l") pre(e(lillg a11 or any lart of<br />
glowth 11a}it, an(l genelully ]aIge, showy leaves. the des( ril)tioll is an in(lie ation tllat a11 that follows<br />
The genus t)IOVi4eS a wi(lP valiely of (hoi(e orlla- is lase(l oll let })al iuln nlatel ial ollly. Mol l)hologi( al<br />
mental plants for horti( ulture, in( lu(ling nlost of the (hala(tes wee *o(le(l dire(tly into a (oml)uterize(l<br />
ST)et ieS treate,(l he,l e.<br />
data})ase to ensule parallel an(l sortal)le (lescriy)-<br />
The genus is (listine t an(l not easily ( onfuse(l tions. 'I'he aloi(l dese liptions (latalease ( ontains 72J4<br />
with any other aroi(l. It is ( losest to Bog7lera, whie h c halae tel states aplicable to the morphologie al didiffers<br />
in la(king staminodia sulrounding the pis- versity exlesse(l in DiefWenh(leSli(l (Croat, 1997).<br />
tillate flowers and in having higher-order venation Dis(ussions and references to illustrations, as well<br />
reticulate. In contrast, Dieffenb(lchi(l has several as exsi(catae, are stored separately, but tie(l to a<br />
staminodia surrounding the pistils and higher-order particular spee ies description and to the nomenclavenation<br />
parallel-pinnate. However, the monotypic tural information by a unique taxon number. Tergenus<br />
Bognera is endemie to Brazil, and it is not minology and usage in the descriptions in this relikely<br />
to be a problem with determination of most vision are largely defined by Croat and Bunting<br />
Dieffenbachia. Alternatively, DiefJenbachia is fre- (1979) and elaborated in Croat (1997).<br />
quently confused with Philodendron Schott, partic- Ecological zones, though sometimes estimated<br />
ularly the terrestrial species of the latter with non- from my own experience with Central American<br />
cordate blades. Philodendron species are mostly vegetation, are largely taken from Holdridge lifehemiepiphytic,<br />
rarely terrestrial as is Dieffenbachia. zone maps (Holdridge, 1967; Holdridge et al.,<br />
Even when Philodendron species are terrestrial and 1971), where they exist for Central American counhave<br />
non-cordate blades, they can be distinguished tries, and for Mexico from the "Mapa de tipos de<br />
by the remotely many-flowered pistils that are not vegetacion de la Republica de Mexico" (Flores et<br />
surrounded by staminodia, as well as the lack of al., 1971).<br />
the acrid foul-smelling, irritating sap that is so Herbarium material has been widely distributed<br />
closely associated with Dieffenbachia.<br />
and original field vouchers are cited for all herbaria<br />
Species diversity of Dieffenbachia shows a gen- whose material was seen (see Appendices 1, 2).<br />
eral diminution from Mexico to Middle America Herbarium material may consist of one of three<br />
669
670 Annals of the<br />
Missouri Botanical Garden<br />
Table 1. Distribution and endemism in Dieffenbachia species from Mexico, Central America and the West Indies.<br />
X = species present, E = endemic species.<br />
Country<br />
Gua- E1 Ni- Col-<br />
Mexi- te- Salva- Hon- cara- Costa West om- Ecua- Vene- Boliv-<br />
Species co mala Belize dor duras gua Rica Panama Indies bia dor zuela Brazil ia<br />
D. aurantiaca X X<br />
D. beachiana X X<br />
D. burgeri E<br />
D. concinna X X<br />
D. copensis E<br />
D. crebripistillata E<br />
D. davidsei X X X<br />
D. fortunensis E<br />
D. fosteri E<br />
D. galdamesiae E<br />
D. grayumiana X X<br />
D. hammelii E<br />
D. horichii E<br />
D. isthmia X X<br />
D. killipii X X X X<br />
D. Iongispatha X X<br />
D. Iutheri E<br />
D. nitidipetiolata X X X X X<br />
D. obscurinervia X X<br />
D. oerstedii X X X X X X X X<br />
D. panamensis E<br />
D. pittieri E<br />
D. seguine X X X X X X<br />
D. standleyi X X<br />
D. tonduzii X X X X X<br />
D. wendlandii X X X X X X X<br />
Total number of 2 2 1 2 3 6 13 20 1 8 4 1 1 1<br />
species (percent<br />
of endemics)<br />
(23%) (40%)<br />
kinds: (1) complete original sets (wild collected);<br />
(2) sterile original material with an inflorescence<br />
added from a cultivated plant of the same number;<br />
and (3) material collected entirely from the cultivated<br />
plant. Specimens based entirely or in part on<br />
cultivated material are clearly indicated on the herbarium<br />
label.<br />
Herbarium specimens were borrowed from most<br />
major herbaria including: A, AAU, B, BBS, BM,<br />
BR, CAS, CAY, CHOCO, CM, COL, CR, CUVC,<br />
DAV, DS, DUKE, EAP, ECON, ENCB, F, FLAS,<br />
FSU, FTG, G, GH, GOET, GUAY, HBG, fIUA, INB,<br />
ISC, K, L, LA, LL, M, MEXU, MICH, MY, NY, P,<br />
computerized, and the entire collection, including<br />
many South American species that are being described<br />
separately, undergoes regular inventories to<br />
include events such as flowering time and attempted<br />
hybridizations. This allows electronic access to<br />
information on status, location, flowering dates, the<br />
number of vouchers prepared, and the status of the<br />
description. All specimens cited have been recorded<br />
in a computerized database for permanent referral.<br />
See www.mobot.org.<br />
HISTORY OF THE GENUS DIEFFENBACHIA<br />
HEINRICH WILHELM SCHOTT<br />
PMA, PORT, QAP, QCA, QCNE, RSA, S, SCZ,<br />
SEL, STRI, TEFH, TEX, TULV, U, UC, UMO, US, The genus Dietfienbachia was described in 1829<br />
USC, USJ, VEN, and WIS. Unless specifically des- by H. W. Schott (Schott, 1829). Schott based the<br />
ignated as not seen, all specimens are to be pre- genus on a single species, Caladium seguinum<br />
sumed to have been examined personally. (Jacq.) Vent. (Ventenat, 1800), previously described<br />
Data on the living collection of Dieffenbachia are as Arum seguine Jacq. (Jacquin, 1763) as well as
Volume 91, Number 4<br />
2004<br />
Table 2. Treatment of Dieffienbachia species by H.W. Schott (1860).<br />
Croat<br />
Revision of Dieffenbachia<br />
Species treated by H. W. Schott (1860) Origin Synonymizations as treated by Engler (1915)<br />
1. D. cognata Schott Suriname = D. seguine var. Iineata (Mart. ex Schott) Engl.<br />
2. D. consobrina Schott Brazil = D. seguine var. viridis Engl.<br />
3. D. costata H. Karst. ex Schott Venezuela<br />
4. D. gollmeriana Schott Venezuela = D. seguine var. viridis Engl.<br />
5. D. humilis Poepp. Peru<br />
6. D. irrorata Mart. ex Schott Brazil = D. seguine var. Iingulata (Mart.) Engl. subvar.<br />
irrorata (Mart.) Engl.<br />
7. D. Iineata K. Koch & Bouche New Granada = D. seguine var. Iineata (K. Koch & Bouche)<br />
Engl.<br />
8. D. Iingulata Mart. ex Schott Brazil = D. seguine var. Iingulata (Mart. ex Schott) Engl.<br />
9. D. Iiturata Schott Unknown = D. seguine var. Iiturata (Schott) Engl.<br />
10. D. macrophylla Poepp. Peru<br />
11. D. neglecta Schott Jamaica = D. seguine var. viridis Engl.<br />
12. D. obliqua Poepp. Peru<br />
13. D. oerstedii Schott Central America<br />
14. D. picta Schott Unknown<br />
15. D. plumieri Schott Martinique = D. seguine var. viridis Engl.<br />
16. D. poeppigii Schott Peru = D. seguine var. viridis Engl.<br />
17. D. robusta Schott Unknown<br />
18. D. seguine (Jacq.) Schott Martinique<br />
19. D. spruceana Schott Brazil = D. humilis Poepp.<br />
20. D. ventenatiana Schott Suriname = D. seguine var. ventenatiana (Schott) Engl.<br />
21. D. usendlandii Schott E1 Salvador = D. seguine<br />
by Linnaeus (1763). The next spe( ies des( ribed marllm (F,ngler, 1879),6 species were treated an(l<br />
were three from Peru (Poeppig 184tS) D. humilis 2 more c ombinations were made. Between 1879<br />
Poepp., D. macrophylla Poepp., an(l D. obliqzla and 1899, 14 a(lditional species were describe(l,<br />
Poepp.<br />
only 3 of which were recognized by Engler in 1915.<br />
Between 1852 and 1864 an additional 18 spe- These were D. flaguensis Engl., D. enfleri Engl.<br />
cies were described, all but 4 of them by H. W and D. olbia L. I,inden 8 Rodigas.<br />
Schott. Of these only 3 were recognize(l in Engler's In 1899, Engler produced another small work on<br />
(1915) revision, while the remainder were synony- Dieffenbachia in which he treated 19 species and<br />
mized or recognized at the subspecific level, mostly made 24 new combinations, but provided no deunder<br />
Dieffenbachia seguine. Those recognized at scriptions except for one new species, Dieffenbachthe<br />
specific level were D. picta Schott, D. costata ia aurantiaca Engl. Only 9 species were described<br />
H. Karst. ex Schott, and D. oerstedii Schott. Be- between this work (1899) and Engler's (1915) retween<br />
1866 and 1878,12 species were described, vision. Those taxa still recognized by Engler (1915)<br />
with 6 more of these being recognized as distinct were Dieffenbachia cordata Engl., D. weberbaueri<br />
in Engler's revision (Table 3). The first major re- Engl., D. gracilis Huber, and D. cannifolia Engl.<br />
vision of the genus was that of Schott (1860) in his ex Ule.<br />
Prodromus Systematis Aroidearum, treating 21 spe- The last revision of the genus Dieffenbachia was<br />
cies, of which Engler later (1915) recognized only by Engler (1915) in Das Pfanzenreich. This revi-<br />
7 (see Table 2).<br />
sion contained both keys and descriptions for 27<br />
species. A total of 11 new combinations were made<br />
ADOLF ENGLER<br />
and 6 new species described (see Table 3). The new<br />
species were D. aglaonematifolia Engl., D. brittonii<br />
The next revisionary effort made with Dieffen-<br />
Engl., D. Iongispatha Engl. 8 K. Krause, D. parbachia<br />
was by Engler (1878) in the treatment of the<br />
vifolia Engl., and D. pittieri Engl. 8 K. Krause.<br />
Araceae in Martius's Flora Brasiliensis. In this<br />
treatment 3 species were included and 16 new<br />
combinations made (these within D. seguine and D.<br />
MODERN WORK<br />
picta). A year later, in his treatment of Dieffen- Very little work was done with Dieffenbachia afbachia<br />
in DeCandolle's Monographiae Phaneroga- ter Engler (1915). Gleason (1929) described D. pal-<br />
671
672<br />
Table 3. Treatment of Dieffienbachia species by A. Engler (1915).<br />
Annals of the<br />
Missouri Botanical Garden<br />
Species treated by A. Engler (1915) Origin As treated in this manuscript<br />
1. D. aglaonematifolia Engl.<br />
Paraguay<br />
2. D. antioquensis Linden & Andre<br />
Colombia<br />
3. D. aurantiaca Engl.<br />
Costa Rica D. aurantiaca Engl.<br />
4. D. bowmannii Carr.<br />
Colombia & Brazil<br />
5. D. brittonii Engl.<br />
Colombia<br />
6. D. cannifolia Engl.<br />
Peru<br />
7. D. cordata Engl.<br />
Peru<br />
8. D. costata Klotzsch<br />
Colombia & Peru<br />
9. D. daguensis Engl.<br />
Colombia<br />
10. D. enderi Engl.<br />
Colombia<br />
11. D. gracilis Huber<br />
Peru<br />
12. D. humilis Poepp.<br />
Brazil & Peru<br />
13. D. imperialis Linden & Andre<br />
Peru<br />
14. D. Iatimaculata Linden & Andre<br />
Colombia<br />
15. D. Ieopoldii Bull<br />
Costa Rica<br />
16. D. Iongispatha Engl. & K. Krause<br />
Panama<br />
D. loslgispatha Engl. & K. Krause<br />
17. D. macrophylla l'oepp.<br />
Peru<br />
18. D. obliqua Poepl).<br />
Peru<br />
19. D. oerstedii Schott<br />
Central America D. oe r.stedii Schott<br />
20. D. olbia J. Linden & Rodigas<br />
Peru<br />
21. D. parlatorei Lillde.n & Andre<br />
Colombia<br />
D. parlatorei val. m.rmorea Linden & Andre Unknown<br />
22. D. pflrvifolia Engl.<br />
Brazil<br />
23. D. picta (Lodd.) S( hott<br />
Brazil?<br />
D. seguine (Jacq.) Schott<br />
D. picta var. an.gll.sl.ior Engl.<br />
Unknown<br />
D. seguine (Jacq.) Schott<br />
D. picta var. allgll..sllor subvar. angustifolia<br />
Engl.<br />
Unknown<br />
D. seguine (Jacq.) Schott<br />
D. picta var. angll sl ior subvar. jenmanii<br />
(Veitch) Engl.<br />
Unknown<br />
D. seguine (Jacq.) Schott<br />
D. picta var. angustior subvar. Iancifolia (Linden<br />
& Andre) Engl.<br />
Unknown<br />
D. seguine (Jacq.) Schott<br />
D. picta var. angustior subvar. schuttlesworthi- Unknown<br />
ana (Hort. Bull.) Engl.<br />
D. seguine (Jacq.) Schott<br />
D. picta var. barraquiniana (Verschaff. &<br />
Lem.) Engl.<br />
Unknown<br />
D. seguine (Jacq.) Schott<br />
D. picta var. Iatior Engl.<br />
Unknown<br />
D. seguine (Jacq.) Schott<br />
D. picta var. Iatior subvar. amoena Hort. Bull. Unknown<br />
D. seguine (Jacq.) Schott<br />
D. picta var. Iatior subvar. carderi Hort. Bull. Unknown<br />
D. seguine (Jacq.) Schott<br />
D. picta var. Iatior subvar. gigantea (Verschaff.)<br />
Engl.<br />
Brazil<br />
D. seguine (Jacq.) Schott<br />
D. picta var. Iatior subvar. magniJica (Linden<br />
& Rodigas) Engl.<br />
Venezuela<br />
D. seguine (Jacq.) Schott<br />
D. picta var. Iatior subvar. meleagris (Linden<br />
& Rodigas) Engl.<br />
Ecuador<br />
D. srleleagris L. Linden & Rodigas<br />
D. picta var. memoria (Corsi Salviati) Engl. Unknown<br />
D. seguine (Jacq.) Schott<br />
D. picta var. Iatior subvar. mirabilis (Verschaff.)<br />
Engl.<br />
Unknown<br />
D. sequine (Jacq.) Schott<br />
D. picta var. Iatior subvar. picturata (Linden<br />
& Rodigas) Engl.<br />
Venezuela<br />
D. seguine (Jacq.) Schott<br />
D. picta var. typica Engl.<br />
Unknown<br />
D. seguine (Jacq.) Schott<br />
24. D. pittieri Engl. & K. Krause<br />
Panama<br />
D. pittieri Engl. & K. Krause<br />
25. D. seguine (L.) Schott<br />
= D. seguine (Jacq.) Schott<br />
Martinique D. seguine (Jacq.) Schott<br />
D. seguine var. decora (Hort. Vershaff.) Engl. Brazil?<br />
D. seguine (Jacq.) Schott<br />
D. seguine var. Iineata (K. Koch & Bouche)<br />
Engl.<br />
Venezuela<br />
D. seguine (Jacq.) Schott
Volume 91, Number 4<br />
2004<br />
Table 3. Continued.<br />
Species treated by A. Engler (1915)<br />
D. seguine var. Iingulata (Martius) Engl.<br />
D. seguine var. Iingulata subvar. irrorata<br />
(Mart.) Engl.<br />
D. seguine var. Iiturata (Schott) Engl.<br />
D. seguine var. Iiturata subvar. wallisii (Linden)<br />
Engl.<br />
D. seguine var. nobilis (Hort. Verschaff.) Engl.<br />
D. seguine var. robusta (K. Koch) Engl.<br />
D. seguine var. ventenatiana (Schott) Engl.<br />
D. seguine var. zziridis Engl.<br />
26 D weberbaueri Engl<br />
27 D weirii Berkl<br />
.<br />
Croat<br />
Revision of Dieffenbachia<br />
Origin<br />
Suriname & Brazil<br />
Brazil<br />
Unknown<br />
Unknown<br />
Brazil<br />
Unknown<br />
Murlname<br />
Widespread in West<br />
Indies, Central and<br />
South America<br />
Peru<br />
Colombia<br />
As treated in this manuscript<br />
D. seguine (Jacq.) Schott<br />
D. seguine (Jacq.) Schott<br />
D. seguine (Jacq,) Schott<br />
D seguine (Jacq,) Schott<br />
D seguine (Jacq,) Schott<br />
D seguine (Jacq,) Schott<br />
D seguine (Jacq,) Schott<br />
D seguine (Jacq,) Schott<br />
udicola N. E. Br. ex Gleason from Guayana, and inaccuracy was in part due to a poor understanding<br />
Jonker and Jonker (1966) described D. elegans A. of the collections that existed at the time, but also<br />
M. E. Jonker 8 Jonker for Suriname. Three species to the fact that most collections of Araveae have<br />
were described from Venezuela, D. 1:volivarana G. been made in the last 25 years. Panama, for ex-<br />
S. Bunting (Bunting, 1963), D. Iiesneri Croat, and ample, has shown vast increases in the number of<br />
D. Iongil)istil(l Croat (Croat 8 Lambert, 1987). An- spevies eollected and identified sinc e the treatment<br />
other Venezuelan spee ies, D. duiflae (Steyerm.) G. of Araveae in the Flor(l oJ P(ln(lm(l. Some genera<br />
S. Bunting was transferle(l (Bunting, 19238) frorr have inereased t)y nearly 544Wo sinee 1944 (Croat,<br />
S)athis ar/)(l (lui(l(le Steyerm., (les( rit)e(l in 1 951 . L985). I)iefRnl)(l(/li(l now has 2G sl)e( ies re( ogl)iefienl)(lchi(l<br />
has been so e onfusing that floristi nize(l for Central Ameri( a with 77% of them new<br />
ae(ounts (lealing with Central Ameri( a have })eell to seien( e sinee work on the revisioll })egan. 'l'his<br />
of little value. Herllsley (188tS) liste(l only a single re^)resents a 40()z7So inelease from the nlln-l})er lespe(ies,<br />
D. oer.ste(lii S(hott, fol his Hiologi(l Cell- I)orte(l in Central Amerie a ly )revious workers (Entr(lli-Americ(lrl(l.<br />
Engler (191tS) rel)orte(l only five gler 1915; Stan(lley, 1937, 1944; Standley d Steyspe(ies<br />
for (3entral Ameriva, D. oerste(lii, D. (IU- ermark, 1958; Matuda, :1954; Bunting, 19G5).<br />
r(lntiac(l Ellgl., D. /)ittieri, D. Iongi.s/)ath(ln D. se- Standley's treatment of the Araveae of the Languine,<br />
an(l D. leo/)ol(lii Bull. The first four were cetilla Va11ey (Stan(11ey, 1931) deait with only 2<br />
properly eir(ums(ril)e(l largely owing to the faet spee ies, D. oerstedii, which was at least in part corthat<br />
he was dealing with little beyond the type rectly determined, and D. seguine, 1)robably D.<br />
speeimens. Dieffenl)achia leopoldii has proven to be standleyi Croat in the present treatment. However,<br />
a species known only from Colombia. The only in the case of the latter species he did not mention<br />
plants Engler (1915) called D. seguine were from the almost fully sheathed petiole that is so distinc-<br />
E1 Salvador the type country of D. wendlandii, tive on D. standleyi. Standley also confused D. sewhich<br />
he erroneously synonymized with D. seguine. guin.e with other species, mentioning that it ranged<br />
Dieffenbachia wendlandii differs from D. seguine in to E1 Salvador (probably D. wendlandii) and to the<br />
having unilocular ovaries, and a long-tapered spa- West Indies (referring to the real D. seguine).<br />
dix that does not protrude forward at anthesis, as The treatment of the Araceae in the Flora of<br />
is the case with D. seguine.<br />
Guatemala (Standley & Steyermark, 1958) is es-<br />
Matuda (1954) reported only D. seguine for Mex- pecially confusing. In this treatment they dealt with<br />
ico, whereas Bunting (1965) reported both D. se- four names, D. oerstedii, D. picta (Lodd.) Schott, a<br />
guine and D. oerstedii for Mexico, the latter being maculate species that I consider synonymous with<br />
a new report. One of the species that Bunting was D. seguine and not occurring in Central America,<br />
dealing with, which he named as D. seguine, is rec- and D. pittieri, which I consider to be a narrow<br />
ognized herein as D. wendlandii.<br />
endemic in the Canal Zone of Panama. Since they<br />
These earlier floristic accounts for Central Amer- did not cite specimens, it is difficult to interpret<br />
ica, in addition to being inaccurate, also grossly their treatment, but their description of D. pittieri<br />
undercounted the number of existing species. This with a petiole sheathed almost to the apex and<br />
673
674<br />
Annals of the<br />
Missouri Botanical Garden<br />
ranging from Guatemala to Honduras may be what relatively few botanists made many collections of<br />
I am currently calling D. standleyi. The plant they Araceae. Mike Grayum, also an aroid specialist,<br />
were calling D. oerstedii probably was, at least in made 68 collections of Diegenbachia in Central<br />
part, the species named. The plant they called D. America, mostly Costa Rica, out of a total of 73<br />
seguine was probably D. wendlandii. The mottled Dieffenbachia collections for that country. Barry<br />
plants they referred to as D. picta may have been Hammel a close associate of Grayum and myself,<br />
cultivated forms of D. seguine, the mottled forms of made 57 collections of Dieffenbachia in Central<br />
which are popular with horticulturists and have America. Paul Standley, one of the most ambitious<br />
been known to persist in areas of abandoned dwell- collectors in the Neotropics made 54 collections.<br />
lngs.<br />
Julian Steyermark, another giant in the field of col-<br />
The Flora of Costa Rica (Standley, 1937) treat- lecting, made 46 collections, but only 13 of these<br />
ment of DieJ7enbachia was somewhat less confused, were in Central America (Guatemala), whereas the<br />
probably because it was adapted from Engler's balance were from Venezuela. A1 Gentry also col-<br />
(1911) treatment. Because several of the species lected a lot of Dieffenbachia, 57 in all, but even<br />
types came from Costa Rica, fewer names were mis- fewer were from Central America (only 5 collecapplied.<br />
Here Standley treated D. aurantiaca, an tions).<br />
endemic to southwestern Costa Rica, D. Ieopoldii The earliest botanist to collect Central American<br />
(a Colombian species not believed to be in Central species of Dieffenbachia was Friedrich Carl Leh-<br />
America and perhaps confused with what I am call- mann over a century ago. These were D. killipii<br />
ing D. killipii in the present treatment), D. pittieri, (Lehmann 5311) and D. tonduzii (I,ehmann 8876),<br />
and D. seguine. Unfortunately, he cited no speci- the latter as early as 1819. Herman Wendland colmens<br />
nor gave any characters by which to recognize lected D. wendlandii, in this case l)efore 1858. Oththe<br />
species. Certainly, no material currently exists er collectors included Adolfe Ton(luz (D. aurantiain<br />
Costa Rica of D. pittieri or D. seguineX ca) and Henri Pittier, the first to collect D.<br />
In the Flora of Panama, Standley (1944) did cite Iongispatha (Pittier 2715), D. ob.se llrinervia (Pittier<br />
specimens for four species. DieJ7enbachia pittieri is 3766), D. pittieri (Pittier 3766), all(l D. killipii (Pitendemic<br />
to the Isthmus of Panama. Standley (1944) tier 2600), all collected as early (1.s l 911; Paul Stancited<br />
the type, Pittier 3766, but he also cited ma- dley, who was the first to collee t 1). concinna (Stanterial<br />
from E1 Valle (Alston & Allen 1839) that rep- dley 36739), D. isthmia (Stan(tle) 29867), and D.<br />
resents D. crebripistillata. Diegenbachia aurantiaca beechiana (Standley 36840), all in 1924; Paul Allen<br />
was even more confused, with only one of the cited initially collected D. crebripistill(lt(l (Allen 1839) in<br />
collections, Woodson & Schery 861, being D. au- 1939; E. P. Killip, D. nitidipetiolal(l (Killip 35113)<br />
rantiaca. Other collections cited assign to three dif- in 1939; and Louis O. Williams 1). horichii (Wilferent<br />
species, D. isthmia, D. killipii, and D. ton- liams 28479) in 1965.<br />
duzii. A total of five species were represented Other Central American species were collected<br />
among the 12 collections cited as D. oerstedii, only only in the past few decades. DieJ7enbachia burgeri<br />
one of which actually was that species (Pittier 2836 dates to William Burger and Ronald Liesner (Burin<br />
western Panama). Other specimens cited under ger & Liesner 7254) in 1970, anel D. davidsei was<br />
this name belong to D. isthmia, D. killipii, D. ni- not seen until Scott Mori made his collection in<br />
tidipetiolata, and D. obscurinervia.<br />
1974 (Mori et al. 4184). Tom Croat encountered<br />
Dieffenbachia fortunensis in 1976 (Croat 37268), D.<br />
COLLECTING HISTORY OF DIEFFENBACHIA galdamesiae in 1979 (Croat 49124), and D. panamensis<br />
in 1974 (Croat 27206). Diegenbachia gra-<br />
Collecting Araceae has not been particularly yumiana was first noticed by Burger and Matta in<br />
popular, and this would be especially true for Dief- 1967 (Burger & Matta 4181), D. fosteri by Robin<br />
fenbachia. Many collectors who have been careless Foster in 1993 (Foster et al. 14649), and D. hamwhen<br />
collecting Dieffienbachia found themselves melii by David Neill in 1978 (Neill & Vincelli<br />
badly burned with the often high concentrations of<br />
oxalic acid in the cut parts. Perhaps this has led<br />
3484).<br />
to the generally low numbers of collections of Dief- SUPRAGENERIC CLASSIFICATION OF SUBFAMILY<br />
fenbachia. A survey of those who collected in Cen- PHILODENDROIDEAE AND RELATIONSHIPS<br />
tral America, based on the extensive TROPICOS OF DIEFFENBACHIA<br />
database of collections, shows that aside from myself<br />
(338 Croat collections for Central America out Engler (1915) placed Dieffenbachia in the subof<br />
a total of 537 Croat collections in the Neotropics) family Philodendroideae Engl. The same position is
Volume 91, Number 4<br />
2004<br />
Croat<br />
Revision of Dieffenbachia<br />
taken by Bogner and Nicolson (1991) in their mod- chieae with two genera (DieJ7enbachia and Bogern<br />
revision. Grayum (1984, 1990) placed Dieffen- nera) and the tribe Spathicarpeae with eight genera,<br />
bachia in its own tribe and does not disagree with Mangonia, Taccarum, Asterostigma, Gorgonidium,<br />
Bogner and Nicolson about its relative placement Synandrospadix, Gearum, Spathantheum, and<br />
or taxonomic status. However, Grayum substantially Spathicarpa. Their tribe Spathicarpeae differs from<br />
modified the Philodendroideae by including the ge- the tribe Dieffenbachieae in having tuberous stems<br />
nus Calla and thus mandated a change in the name and leaves with reticulate higher-order venation.<br />
of the subfamily to Calloideae Endl. on the basis However, the latter character is also present in<br />
of priority. This group, as defined by Grayum, is Bognera, one of the two genera in their tribe Diefsubstantially<br />
larger than that of Bogner and Nic- fenbachieae. In the Dieffenbachia alliance Dieffenolson's,<br />
with 40 genera arranged in 17 tribes in five bachieae are distinguished from other tribes by<br />
alliances. This contrasts with 18 genera in 7 tribes having anatropous ovules; the primary lateral veins<br />
according to Bogner and Nicolson. The latter sys- forming a single marginal vein but also lacking coltem<br />
closely mirrors Engler's Philodendroideae, ex- lective veins; and, perhaps most importantly, in<br />
cept for the inclusion of new genera and the syn- having the pistillate portion of the spadix completeonymizing<br />
of others since the time of Engler. The ly fused to the spathe. Tribe Dieffenbachieae sensu<br />
size of Grayum's Philodendroideae resulted from Mayo et al. (1997) is distinguished from other tribes<br />
the inclusion of tribes from the subfamilies Aro- of subfamily Philodendroideae by having stamens<br />
ideae Adans., Pothoideae Engl., and Lasioideae connate into synandria, and in having several free<br />
Engl. (Croat, 1990 [1992]).<br />
staminodia associated with the female flowers. Oth-<br />
In recent suprageneric classifications by Mayo et er useful distinguishing features include a conal.<br />
(1997, 1998) all the genera with unisexual flow- stricted spathe partly adnate with the pistillate spaers<br />
were grouped together in the subfamily Aro- dix, terrestrial caulescent habit, closely parallel<br />
ideae and further divided into non-ranked groups, primary and minor veins, and seeds with endothe<br />
perigoniate Aroideae and aperigoniate Aro- sperm.<br />
ideae. Dieffenbachia, in the latter group, was placed The Dieffenbachia alliance of Mayo et al (1997)<br />
in the Dieffenbachia alliance, one of four alliances has been supported by molecular studies with chlo-<br />
(the others called Philodendron, Schismatoglottis, roplast trnI,-F genes (Barabe; Tam et al, 2004)<br />
and Caladium alliances respectively). These alli- This study shows close relationships between<br />
ances comprise 33 genera with an additional 37 Spathicarpeae and Dieffenbachieae with Dieffengenera<br />
being placed in a group labeled "No alli- bachia being paired with Spathicarpa on one<br />
ance." The classification by Mayo et al. was able branch and with Cerce.sti.s Schott, Rhektophyllum N.<br />
to make use of the results of the recently completed E. Br., and Culcasia P. Beauv. forming another<br />
chloroplast DNA studies and anatomical studies of branch of the tree.<br />
French and colleagues (1995, 1997). DieJ7enbachia, Although both Grayum (1984, 1990) and Bogner<br />
along with Bognera, was placed in the tribe Dief- and Nicolson (1991) placed Dieffenbachia in its<br />
fenbachieae, a tribe characterized by having the own tribe, the authors of both systems now agree<br />
pistillate flowers completely adnate to the spathe. that Bognera, another Neotropical genus, is very<br />
In the most recent suprageneric classification of close to or within the tribe Dieffenbachieae, sensu<br />
the family by Keating (2002, 2003a) Dieffienbachia Mayo et al. (1997). Keating (2002, 2003a) simply<br />
is included in subfamily Philodendroideae, tribe subsumed this tribe (or its genera) within his larger<br />
Spathicarpeae Schott, along with Bognera, Spa- Spathicarpeae, still in essential agreernent.<br />
thantheum Schott, Gorgonidium Schott, Synandros- The subfamily Philodendroideae is worldwide in<br />
padix Engl., Gearum N. E. Br., Spathicarpa Hook., distribution and, sensu Grayum (pers. comm.), it is<br />
Asterostigma Fisch. & C. A. Mey., Mangonia somewhat equally divided between the Old World<br />
Schott, and Taccarum Brongn. ex Schott. Keating's and the New World, with 19 genera (17 of them<br />
revision makes use of a wealth of vegetative ana- endemic) and 761 species in the New World and<br />
tomical information he has accumulated on the 23 (21 endemic) genera and 354 species in the Old<br />
family. All members of the Spathicarpeae share in World. Grayum places the Dieffenbachieae in his<br />
common Type B collenchyma; vascular bundle type Aglaonema alliance with Zantedeschieae Engl.<br />
II (or occasionally types I or III); and either lack (Zantedeschia Spreng.), Aglaonemateae Engl.<br />
laticifers or have non-anastomosing type laticifers. (Aglaonema Schott, Aglaodorum Schott), Spathicar-<br />
The Dieffenbachia alliance of Mayo et al. (1997) peae (Mangonia, Asterostigma, Synandrospadix,<br />
is distinguished by having simple laticifers and free Taccarum, Gorgonidium, Gearum, Spathanthemum,<br />
synandria. It contains two tribes, the Dieffenba- Spathicarpa), and Bognereae S. Mayo & D. Nicol-<br />
675
676 Annals of the<br />
Missouri Botanical Garden<br />
son (Bognera). Anubiadeae Engl. (1876) (Anubias more foul-scented and caustic than many other spe-<br />
Schott) and Zantedeschieae are restricted to Africa, cies, and may in part account for less breakage by<br />
while the Spathicarpeae are restricted to southern deterring animals from the plant.<br />
South America.<br />
In some cases DieJ7enbachia may grow in standing<br />
water. In such cases the stems may be rather<br />
MORPHOLOGY OF VEGETATIVE STRUCTURES deeply buried in the mud. Some species, such as<br />
IIABIrF AND GROWTH PATTERNS<br />
D. grayumiana, are frequent in wet habitats, but<br />
most species thrive in well-drained soils. The genus<br />
Dieffenbachia is always terrestrial and caules- is seldom found on road embankments, a habitat<br />
cent (Croat, 1988 [1990]). In terms of growth be- that is very common for species of Anthurium and<br />
havior and habit, Dieffenbachia is not as variable Philodendron. This is perhaps because the two latas<br />
Philodendron, a related genus, but sterile plants ter, principally hemi-epiphytic genera can more<br />
disassociated with notes about habit can be con- easily become estal)lished on the excessively wellfused<br />
with those of Philodendron. Stems of Dieffen- drained and poor clay soils of typical road embachia<br />
are erect, at least on the younger portions, bankments in the Neotropics.<br />
with older portions of the stem typically becoming Development in Dieffenbachia is never heterodecumbent.<br />
This creeping portion of the stem is blastic. Instead, changes in internode size and leaf<br />
sometimes even longer than the erect portion (Fig. size progress without any marked changes in blade<br />
23A). The overall height of any species is usually shape. However, leaf blades of Dieffenbachia that<br />
determined by the thickness, strength, and rigidity ultimately become ( ordate at the base are at first<br />
of the stem. Typically, species such as D. burgeri, simple and acute to obtuse at the base.<br />
D. hammelii, and most plants of D. oerstedii, with<br />
small-diameter stems, do not get to more than 1 m<br />
tall nor do they usually have stems more than 2.5<br />
STEMS<br />
cm in diameter. Alternatively, the taller species like Internodes are ty)ically about as long as broad<br />
D. horichii, D. Ion;,Xisl)atha, and D. standleyi have or even shorter tl(l] broad. Sometimes, as in the<br />
thick stems and reach heights of 2 to 3.5 m. Cul- case of D. galdan7(.siae, petioles are affixed to the<br />
tivated plants growing in a pot and unable to be- stem at an oblique tlngle and the internodes are not<br />
come reclined at the base can grow to indefinite of equal width acloss the diameter of the stem. Inheight.<br />
A plant of D. standleyi cultivated in the stead, one side is as much as 1 cm wider than the<br />
greenhouse of the Missouri Botanical Garden grew other. Most commolllyX internodes are glossy to seup<br />
the side of a wall from a pot to the height of 8 miglossy and smooth though they may be minutely<br />
m.<br />
roughened, appearing with a somewhat weak vel-<br />
The portion of the stem that comes in contact vety sheen, as in tlle case of D. oerstedii. Though<br />
with the ground becomes rooted at the nodes, but for most species tlle internodes remain moderately<br />
stems are rarely buried. Instead, the stems usually glossy even in age, when fresh, the internodes may<br />
creep over the surface of the ground. The growth change promptly. 1 n D. obscurinervia, the stem,<br />
behavior often leads to vegetative reproduction, though initially semiglossy, promptly becomes<br />
since on some species the creeping portion of the etched in a deep, areolate pattern to such an extent<br />
stem tends to produce active branch buds that form that the stem becomes matte and is conspicuously<br />
new growth. Another feature that tends to induce scurfy.<br />
additional branching is the often fragile stem ex- Cataphylls are never present on Dieffenbachia.<br />
tending laterally over the ground, which may be Instead, the new growth on stems of Dieffenbachia<br />
broken by being walked on by animals. Broken is protected by the sheathing petiole of the precedstems<br />
invariably produce new branches. These re- ing leaf.<br />
sults often cause Dieffenbachia to grow in large col- Stem color varies considerably between species<br />
onies, especially in open, better illuminated areas and even within populations of the same species.<br />
of the understory of a forest, along stream banks or Species such as D. Iongispatha, which typically<br />
in open swamps. Examples of colonial growth occur possess stems that are solid green, can sometimes<br />
in D. crebripistillata, D. isthmia, D. killipii, and D. be variegated with paler colors. Typically, stem col-<br />
Oerstedii. Some species, such as the taller D. Ion- or variegation is in the form of streaks rather than<br />
gispatha (to 3.5 m), are usually less colonial. This mottling. The stem may be relatively dark green<br />
is perhaps because it is a species with a large, stout with even darker streaks, in which case the motstem<br />
that is less likely to be broken up by the el- tling would not be too apparent, or, as is more freements.<br />
This species also has a thicker sap that is quently the case, it may be streaked with pale
Volume 91, Number 4<br />
2004<br />
%()111P .S[)e('itX,% (1). (/(lVi(lss(i, 1). ,s(^grilitl(') llclVC tilC [)e.t-<br />
iole sheclll free-en(lillg (K'igS. t
678<br />
Annals of the<br />
Missouri Botanical Garden<br />
are solid green on both surfaces. There are consid- with the staminate flowers at the apex and the piserable<br />
differences in the nllmler of inflorescences tillate flowers at the base. The spadix of Dieffenper<br />
axiln ranging from solitary on a number of spe- bachia is usually shorter than the spathe by 1-3<br />
cies at least part of the time or up to eight per axil cm (Fig. 2B). The spadix is contained within the<br />
as with D. concinna. In any population the number spathe, and is more or less straight or weakly<br />
of inflorescences per axil may vary. Studies made curved (Fig. 8F) at anthesis, rather than being<br />
with D. oerstedii in Costa Rica (Valerio, 1984) prominently protruded forward. Some species have<br />
showed that this species produced primarily one or the spadix protruded forward at anthesis, such as<br />
two inflorescences per axil.<br />
D. burgeri (Fig. 4C), D. crebripistillata (Fig. 7C), D.<br />
horichii (Fig. 13E), D. wendlandii (Fig. 26C), and<br />
SIATHE<br />
D. seguine (Fig. 23E). The last species, which ranges<br />
throughout the West Indies, has a spadix that<br />
Each spathe in a cluster of inflorescences in<br />
notably protrudes and is cylindrical, rather than ta-<br />
Dieffenbachia is subtended by linear-lanceolate<br />
pered to the apex as in the remaining Central<br />
bracteoles, each of which are unribbed. The brac-<br />
American species (Fig. 23F). Diefienbachia seguine<br />
teoles are typie ally about as long as the peduncles,<br />
also has a spadix (Fig. 23) that is caught in the<br />
but can sometimes be shorter or longer. They are<br />
protruded position when the spathe re-closes. In<br />
somewhat mar( ese ent.<br />
contrast to D. seguine, all of the (3entral American<br />
Spathes of llieffenbachia are uniforrnly green,<br />
species have spathes that close normally with the<br />
though the inner surface tends to be somewhat palspadix<br />
withdrawing inside of the spathe.<br />
er than the outel surface and frequently much<br />
Like other members of the Philo(lendroideae, the<br />
glossier. The OUtUl spathe surface is typically sespadix<br />
in Dieffenbachia is divide(l up into a fertile<br />
miglossy to weakly glossy. Sometimes the inner surstarninate<br />
section at the apex, a sterile section lying<br />
face of the spathe is somewhat whitish on the inside<br />
beneath the fertile staminate )oltionX and the pisnear<br />
the tip.<br />
tillate portion (Figs. 2B, 7, 18! 2?.5). The lowermost<br />
The spathe of Illost Diefenbachia is only weakly<br />
section, as with all Araceae witll llllisexual flowers,<br />
constricted alsove the spathe tube (Figs. 7A, 16D,<br />
is the pistillate section. Typie ally lhe pistillate por-<br />
20F, 22E, 2^-3kJ! 2zlt 25F). When the entire spathe<br />
tion and the staminate portion (lle of roughly equal<br />
is fully flattene(l, lhe tube portion is considerably<br />
lengths, but the length of the stex ile eiegment (when<br />
wider (Figs. 21S, I SH, 22F, 23F) and the spathe is<br />
apparent) is highly variable lsolll ill terms of length<br />
gradually tapere(l from the lower 1/4 to the usually<br />
and the degree to which stamino(lia and pistillodes<br />
acuminate apex (Fig. 23F). Sometimes there is a<br />
are dispersed on it (Figs. 2B, 4(3! .5l), 7, 15H, 18D,<br />
weak central (onstriction. The point of maximum<br />
23F, 25G). In most cases the [)istillate region is<br />
c onstriction c orl esponds to the sterile section of the<br />
slightly longer than the staminclte.<br />
spadix betweell the fertile staminate flowers and the<br />
The fertile staminate portion is somewhat cylinpistillate<br />
flowers.<br />
droid to spindle-shaped, broa(lest ill the middle and<br />
At anthesis tle spathe of Diefenbachia is open<br />
weakly tapered toward both en(ts, being bluntly<br />
to about the middle (Figs. 5B, 7A, 13E, 16D), or<br />
rounded at the apex. The fertile rllale flowers are<br />
somewhat below the middle, lgut does not open as<br />
compacted and sub-rounded or with angular marwidely<br />
as that of Philodendron. At anthesis the<br />
gins (Figs 2E, 5G). As the spa(lix approaches anspathe<br />
blade is wider than the tube. Typically only<br />
thesis the synandria loosen ancl the anthers become<br />
the staminate portion of the spadix is visible at anvisible<br />
between the synandria. 'roward the base of<br />
thesis but sometimes, as in D. crebripistillata, a porthe<br />
staminate portion of the spa(lix, the flowers are<br />
tion of the pistillate spadix is also exposed. Closure<br />
somewhat more irregular in size and shapen but do<br />
of the spathe after anthesis is sometimes not comnot<br />
become radically different as in the case of<br />
plete, with the margins of the spathe meeting irreg-<br />
Philodendron and Xanthosoma, where the lowerularly.<br />
At anthesis the blade of the spathe is usually<br />
most male flowers are sterile and swollen. In conarched<br />
somewhat forward, hooding the spadix<br />
trast, Dieftenbachia relies entirely on club-shaped<br />
slightly. For some species, such as D. crebripistilstaminodia<br />
surrounding the pistils (Figs. 5E, 14C).<br />
lata, the spathe may be recurled at anthesis (Fig.<br />
The lowermost staminate flowers are smaller or very<br />
7C).<br />
irregular in shape, sometimes showing signs of two<br />
SPADIX<br />
or more flowers fused together. Sometimes the uppermost<br />
pistils are reduced, apparently sterile, and<br />
Flowers of Dieffienbachia are unisexual and na- surrounded by sterile male flowers (Fig. 15H). Apked,<br />
dispersed on the spadix- in the typical manner parently the lowermost staminate flowers are also
Volume 91, Number 4<br />
2004<br />
Croat<br />
Revision of Dieffenbachia<br />
more attractive to beetle pollinators, since only the apparently absent, with the fertile staminate and<br />
lowermost flowers are eaten (Fig. 1B).<br />
fertile pistillate portions essentially contiguous. The<br />
length of the sterile portion of the spadix is here<br />
ANDROECIUM<br />
defined as that portion which lies between the lowermost<br />
functional androecium and the uppermost<br />
Staminate flowers consist of 4 stamens united functional pistil regardless of the presence of pisinto<br />
a 4- or 5-sulcate truncate synandrium (Figs. tillodes and staminodes along its length. However,<br />
2E, 5G, 23G, 26E). The apex of the synandrium the sterile portion of the spadix is usually quite<br />
often has a minute slit or an equidistant series of obvious since a significant proportion of the sterile<br />
3 minute slits connected at the center. Upon drying section is devoid of flowers. The axis of the sterile<br />
the apex of the synandrium may become wrinkled portion is typically convex as if the terete axis of<br />
along the margin and may also have a concave sur- the spadix (now fused) was half sunken into the<br />
face. The anthers are contiguous or nearly so, af- leafy tissue of the spathe.<br />
fixed near the upper edge of the synandrium. The<br />
thecae are obovoid to cylindroid, opening by apical<br />
PISTII,I,ATE SPADIX<br />
slits just below the upper edge of the synandrium.<br />
The pollen is dispersed in slender, subterete filaments<br />
and typically projects up to 1 cm above the<br />
surface of the synandrium. When the stamens are<br />
at anthesis, the shedding pollen can completely fill<br />
the now closing spathe (Fig. 5F).<br />
The pistillate portion of the spadix is fused<br />
throughout its entire length to the spathe. What appears<br />
to be a stipe is readily apparent at the base.<br />
The pistillate flowers rarely extend very close to the<br />
base of the spathe (Fig. 4C). After the presence or<br />
absence of a sterile segment in the spadix, the<br />
POLI,EN<br />
number and disposition of the pistils is perhaps the<br />
Pollen of Dieffenbachia is released in monads most important taxonomi( character in the infloresthat<br />
are inaperturate, subisopolar to virtually polar, cence. Unlike many genera in the Philodendroi(leae<br />
boat-shaped-ellipti( to oblong, or nearly spherie al. that have the pistillate flowers closely aggregate(l<br />
They are bilaterally symmetrie al or radiosymmetrie on the spa(lix, the pistillate flowers of DiefJenbachia<br />
(Grayum, 1992).<br />
are moderately dispersed on the spadix. The degree<br />
Dieffenbachia pollen is moderately large for Ar- of (lispersal on the spadix is in itself different from<br />
aveae, ranging from 54 to 99 1lm (as in D. oerstedii) spee ies to spee ies. There are generally only 2 or 3<br />
and avelaging 79 11m. Exine sculpturing is psilate<br />
pistils aeross the width of the spadix axis (regardto<br />
obs(urely verrueulate (as in D. oer.steflii) an(l/or<br />
less of whether they are lined up or not). Rarely,<br />
sparingly punctate-foveate to densely foveate with as in the ease of D. killivii, there up to 6 pistils<br />
scattered compound foveolae (as in D. pittieri and visible across the width of the spadix. At the op-<br />
D. seguine). Grayum (1992) pointed out that the posite extreme, D. Iongispatha sometimes has a solcompound<br />
foveolae found on the pollen of D. pittieri itary row of pistils across the spadix axis. The arand<br />
D. seguine resemble those of Chlorospatha<br />
rangement of the pistils is generally quite irregular,<br />
croatiana Grayum.<br />
lacking any obvious equidistant spacing or alignment<br />
in rows, but sometimes a series of pistils<br />
STERILE SPADIX SECTION<br />
might be arranged in a loose row (as in D. killipii)<br />
or even in a broad arc across the width of the spa-<br />
Dieffienbachia typically has a nearly barren sec- dix.<br />
tion of the spadix lying between the fertile stami- Pistils are 2- or 3-carpellate, sometimes l-carnate<br />
portion at the apex and the pistillate portion pellate, sessile, depressed-globose to depressedat<br />
the base (Figs. 5D, 23F). This section occurs in ovoid, pale green, semiglossy, and smooth or 2- or<br />
the area where the spadix first becomes free from 3-lobate. The stigma is a 2- or 3-lobate cushionthe<br />
spathe. Only rarely is the transition between like layer that covers the entire apex of the pistil.<br />
the fertile staminate and the sterile }ortion of the The stigmatic papillae are orange or yellow. The<br />
spadix clearly defined with the fertile flowers papillae are close, dense, and moderately short,<br />
abruptly ending on a clear flowerless sterile portion. similar to those of Philodendron, but appear less<br />
Instead, there is usually an assortment of sterile interspersed with the gelatinous matrix that is so<br />
male flowers toward the apex of the sterile segment common on the stigmas of that genus. The stylar<br />
(Fig. 7E). Less frequently there are pistillodes in region is inconspicuous. With the stigma removed,<br />
the lower half of the sterile segment. In D. beachi- the surface is truncate or broadly sulcate with a<br />
ana and D. killipii (Fig. 15H) the sterile section is solitary medial or near-medial pore. Ovules are<br />
679
. . . n . . .<br />
680 Annals of the<br />
Missouri Botanical Garden<br />
anatropous, one per locule. Each pistil is surround- were sterile, varying from 1 to 17 per infructesced<br />
by 4 or 5 claviform, fleshy, white staminodia. ence.<br />
The staminodia may be fused somewhat at the base, Germination of seeds is usually prompt if the<br />
often forming a cupuliform structure around the mesocarp is first removed. Valerio (1984) found that<br />
base of the pistil. Individual staminodia are sub- naked seeds of cleaned berries of D. oerstedii began<br />
cylindrical, commonly somewhat flattened toward to germlnate wltnln I our days ln a germlnatlon<br />
the base and usually enlarged, sometimes almost chamber. The percentage of seeds germinating<br />
subglobular at the apex. Staminodia typically are ranged from 77.3Wo to 100% for different infrucerect-spreading<br />
or erect, vary considerably in tescences (averaging 91.7Wo). However, berries left<br />
length, but are almost invariably longer than the intact usually did not germinate, but remainded vipistils,<br />
usually 2-5 mm long, and held well above able for up to 90 days.<br />
the pistils.<br />
Valerio (1984) also reported that although 82Wo<br />
of the 729 berries studie(l were green, the remain-<br />
MORPHOLOG Y () F1 FRUITING STRUCTURES der were red or yellowish. All seeds produced only<br />
eN( l X AND FRUIT<br />
albino plants. Germinatiorl lates for both the green<br />
seeds and the abnormal seeds were the same, but<br />
While the intlorescences are always first erect, the albino plants perishe(l. His studies with seed<br />
they quickly be(ome reflexed after anthesis. This germination of D. oersteelii, as well as observations<br />
is probably important to successful development of of other plants in the fiel(l le(l him to conclude that<br />
the infructescen(e as it prevents the spathe from plants of this species re(uile(l between five and six<br />
filling with rainwater and thus possible decay. years to reach reproductivf age.<br />
Fruits develop within the re-closed spathe, which Fruit maturation is nollally a slow process in<br />
often turns yellow, pale to bright orange, or red as Dieffenbachia, requiring ll) to nine months in the<br />
fruits begin to nlature. The spathe enlarges some- case of D. nitidipetiolat(l (Young, 1986) (reported<br />
what during the (ourse of maturation, an(l finally as D. Iongispatha). Valf gio (1984) reported that<br />
begins to reflex along the middle, especially the fruit maturation in D. *ser.st(elii was approximately<br />
portion that is fsed to the spadix. In the l)rocess one year. Valerio (1984) sllgt,ested that the seeds<br />
most of the margins of the spathe slough off, leaving of Dieffenbachia are l)i(l-(lispersed because the<br />
just the fruiting spadix. The spadix remains arched seeds will not germinate [Xless the fruit mesocarp<br />
backward with lhe bright red to orange-re(l berries is first removed. At mallll ily the mesocarp of Diefheld<br />
somewhat apart by the recurving proe ess and fenbachia berries is pasty (l](l somewhat sweet. The<br />
displayed against the generally pale remains of the fruits would appear to l)e lllo;t suitable to bird disspathe<br />
(Figs. 1D, 4D).<br />
persal, being colorful a](l 11aving only a thin layer<br />
Although fluit develops with self pollination, of edible portion availal)le. 'I'he seeds are soft and<br />
fruit and seed size are greater when the plants are could easily be destroye(l l)y (hewing, so effective<br />
out-crossed (Young, 1986). Since Dieffenbachia animal dispersers are plol)al)ly just removing the<br />
flowers are nake(3 all protection of the flowers must pericarp and thin mesocal ). F ruits of DielJenbachia<br />
be provided hy the spathe. In the manner of many have been observed bei], eaten by white-faced<br />
other genera in the Philodendroideae, the spathe monkeys, Cebus capucinll.s (J. Oppenheimer, pers.<br />
re-closes ovel the female flowers after pollination. comm.), but it is not knowr] whether they are the<br />
In most cases, protection of the developing fruits primary dispersal agents, sillve cebus monkeys are<br />
after pollination is provided by the thickness of the known to be generalists ir] lheir eating behavior (J.<br />
spathe, as is true of other aroid genera such as<br />
Philodendron, but in Dieffenbachia protection is<br />
Oppenheimer, pers. comm.).<br />
also provided by toxins in the sap, which may burn<br />
the mouth of any animal eating it. However, the<br />
FLOWERING BEHAVIOR ANI) ItOLLINATION<br />
pericarp and mesocarp of the berry appear to have Dieffenbachia populations tend to be aggregated,<br />
no injurious effects when eaten and apparently lack perhaps due as much to the vegetative reproduction<br />
the sallle toxic effects found elsewhere.<br />
of the stems as by local germination of seeds. A<br />
Generally, most pistils of an inflorescence are single clone may have many stems, but relatively<br />
pollinated and develop into fruits, but the number few stems flower in a given year, and the number<br />
produce(l per plant is variable. Studies in Costa of inflorescences open on a given day is few (Young,<br />
Rica on D. oerstedii (Valerio, 1984) showed that the 1988b). Inflorescences borne on a single stem genfruits<br />
varied from 13 to 43 with an average of 26 erally do not anthesally overlap, thus there is little<br />
per plant. Valerio also reported that some berries potential for geitonogamy (Young, 1990). For D. ni-
Volume 91, Number 4<br />
2004<br />
Croat<br />
Revision of Dieffenbachia<br />
tidipetiolata (reported as D. Iongispatha in Young, to close and the staminate flowers are emitting pol-<br />
1988b) a reproductive stem may have two to seven len in long filaments (Fig. 5F). In order to leave the<br />
inflorescences during a single growing season, ma- inflorescence the beetle must literally wade through<br />
turing at intervals of 3 to 12 days (Young, 1986). pollen, ensuring that it will be covered with pollen<br />
For D. oerstedii there may be between one and four before flying away to the next receptive infloresinflorescences<br />
per axil. Valerio (1984) reported that cence.<br />
plants which produced a solitary inflorescence (34 While some Dieffenbachia species, perhaps<br />
of the 83 plants studied produced inflorescences) most, have spathes that remain open only 24 hr.<br />
did not develop fruit. Valerio was unable to ascer- (based on my observations in the field), the pollitain<br />
whether this was due to a lack of pollinators nation event for D. nitidipetiolata (reported by<br />
or age of the plants.<br />
Young as D. Iongispatha) involves three days<br />
The pollination biology of Dieffenbachia has (Young, 1990). Inflorescences of this species open<br />
been studied (Croat, 1978, 1983b; Valerio, 1984; in the evening of the first day, but the spadix is not<br />
Young, 1986, 1988a, 1990). It has long been known initially receptive. On the evening of the second<br />
to aroid workers that Dieffenbachia and several oth- day the stigmas become receptive (about 17:30)<br />
er aroid genera, e.g., Philodendron, some Syngon- and the spadix temperature increases to 4°C above<br />
ium, and Xanthosoma, are visited regularly by large ambient temperature (Young, 1990). It is at this<br />
scarab beetles (Coleoptera). Young (1986, 1990) time that beetle pollinators arrive, and they enter<br />
found that D. nitidipetiolata (reported as D. Iongis- the spathe where they generally persist for another<br />
patha) is pollinated mostly by beetles of the genus full day, departing on the evening of the third day.<br />
Cyclocephala (Scarabaeideae, Dynastineae) or more Young (1990) found that for most days there were<br />
infrequently by the genus Erioscelis, also a dynas- fewer than four inflorescences open and in ferrlale<br />
tine scarab. Other visitors, including Diptera, He- phase at any one time in an area of 700,000 rrl2. In<br />
miptera, Dermaptera, Thysanoptera, an(l nitidulid her stuLlies at l, Selva in Costa Riea she foun(l<br />
beetles (Coleol)tera, Nitu(luli(lae), I)rove(l not to that l)eetles flew I)etween 1 an(l 68() m (averaging<br />
( arry )ol]en and were deeme(l ly Young nol to I)e<br />
pollinators (Young, 199()).<br />
8.S m) ))etween (onse( utive visits to 19. nitifli/)etiol-<br />
t(l (leporte({ as 1). lest7.gis/)(lth(l).<br />
()ther monoe(ious aloid generae su(h as; l'lliles- Beetle pollination ot l)ie/>nlselehiel is not speler1(1ror1<br />
an(l X(lethc)somfl, are krown to le }eetle (ies-s,^)e(ifi(. Nine (liffeellt s(arat) teetle sy)e(ies<br />
[)ollinate(l an(l provide foo(l })y meal-]S; of oil-ri( h of (Sycloee)lzfll(l as wel l as Frioseeli.s ( ollltnl)ie (l Ensterile<br />
male flowers. ln l)iet/erll)(l(hi(l the foo(1 re- (IIO(I; WUlP fOllrl(l to )OIlitlAtC 1). niti/i/)cJt.iolfltel (rewal(l<br />
(onsists of the l)rotein-ri(h (lul-shale(l sta- [)orted I)y Young as I). lotZgisisfithfl) at the l,a Selva<br />
mino(lia surroun(ling ea( h female flower (Young, ltesel ve i] Costa lti( a (Young, ] 986). Still, lliet<br />
1986, 199()), I)ut the lmeetles have also })een seen fenhach ia sI )ecies l l o(l u( e (lifferent s( ents an(l (liffeeding<br />
on the lowermost poltion of the fertile sta- ferentially attl ae t pal tie ular leetle spee ies (G.<br />
minate portion of the sleadix. An indication that the Se hatz, pers. ( omm.).<br />
staminodial foo(l source is impoltant to the beetles Be(ause of the loose relationship between the<br />
an(l prefelred over other flolal parts, is that the pollinators ancl any olle species of DiefWenbachia,<br />
beetles will leave an inflorescence.<br />
hybridization (loes occasiollally occur (Young, pers.<br />
The production of scents during flowering is fa- (omm.). It is known that seeds from hybrid plants<br />
cilitatecl by the thermogenic behavior of the spadix, do germinate and produce viable F1 plants. It has<br />
which may increase as much as 4°C during anthesis not yet been determined if this F1 generation is<br />
(Young, 1990). Scent production coincides with the capable of reproducing sexually. Still, this phenomflight<br />
activity of the scarab beetle pollinators enon of hybridization might explain the many dif-<br />
(Schatz, 1990). Active movement of pollinators is ferent, seemingly related, but distinct, populations<br />
usually at dusk, seemingly in direct paths to an of D. nitidipetiolata that occur in some regions,<br />
open inflorescence. Beetles arrive at the inflores- such as the Rio Guanche region of Colon Province<br />
cence by first landing on the spadix (Young, 1990), in Panama. Since asexual reproduction is so prevthen<br />
entering the lower tube portion of the spathe alent in Dieffenbachia, occasional hybridization folwhere<br />
the pistillate portion of the spathe is at an- lowed by vegetative reproduction might explain<br />
thesis. Beetles typically remain in the inflorescence these patterns of variation.<br />
for 24 hr. after their arrival. While in the spathe<br />
the beetles mate and eat the nutritious staminodia PHENOLOGY<br />
(Young, 1986) surrounding the pistils. Beetles de- Some species of Dieffenbachia are in flower all<br />
part the following day as the inflorescence begins year-round. In general, more flowering takes place<br />
681
682<br />
Annals of the<br />
Missouri Botanical Garden<br />
during the rainy season even if the species flowers ama (20), and Costa Rica (13), principally at lower<br />
at other times of the year as well. This may be tied to middle elevations in the Andes. The genus is<br />
to the fact that the beetles pollinating Dieff7enbachia also widespread in the Amazon basin as is eviare<br />
more frequent during wet periods. Although D. denced by the large number of species at low elebeachiana<br />
and D. burgeri flower primarily in the vations in Brazil with a total of 27 species. Only 8<br />
dry season in (2osta Rica and PanamaS they occur species occur in the Guianas region in eastern<br />
in wetter habitats where beetle pollinators are re- South America and the Territorio Amapa of northliably<br />
available.<br />
eastern Brazil. The genus is exceptionally abundant<br />
in the western Amazon basin in the foothills of the<br />
>Y'rol,o(Jy<br />
eastern Andes, with 57 species. The wetter forests<br />
at middle elevations in the foothills of the Andes<br />
Dieffenbachia has chromosome counts of 2n =<br />
are particularly rich. For example, there are 5 spe-<br />
34 and 68 (Petersen, 1989). Grayum argued that<br />
cies in the vicinity of the Jatun Sacha Reserve<br />
Dieffenbachia is closely related to Philodendron<br />
along the Upper Rio Napo near Misahualli in Ec-<br />
(Grayum, 1984). Petersen (1989) argued that Philuador.<br />
odendron would not be considered so closely relat-<br />
As is true for many other genera of Araceae<br />
ed if its chromosome base number were not 17 as<br />
(Croat, 1992, 1983a, 1986a, 1986b), the northassumed<br />
by Grayum. She also argued that the difwestern<br />
part of South America, especially on the<br />
ferences in the "size and constitution of the chro-<br />
Pacific slope of Colombia and adjacent Ecuador, is<br />
mosomes (small metacentrics of Philodendron versus<br />
rich in species of Dieffenbachia. About 14 species<br />
medium to large submetacentrics to subtelocentrics<br />
occur on the eastern slopes of the Andes in Ecuaof<br />
Dieffenbachia) also indicate that no close relationdor<br />
and about 1*S species are known from the Paship<br />
exists between the two genera" (Petersen, 1989:<br />
cific slope in Colombia. Relatively [ew species oc-<br />
128). Petersen ( onsidered the chromosome basic<br />
cur in southern South America, with only<br />
number in Philo(lendron to be x = 18 based on the<br />
Dieffenbachia aS,tl(lonematifolia Engl. occurring in<br />
fact that all members of Philodendron subg. Mesouthern<br />
Brazil, I'araguay (Croat & Mount, 1988),<br />
conostigma (Schott) Engl. have 2n = 18 and suband<br />
Argentina. (:ollections of only 7 species, mostly<br />
genus PhilodenXron Schott also has 2n = 18 in<br />
new species, have been seen for Bolivia. Northpart.<br />
Grayum (1984) suggested that Daeffenbachia<br />
central South America is also not particutarly rich<br />
was close to the tribe Spathicarpeae (subfam. Aroin<br />
species. Only 2 species occur in the Cordillera<br />
ideae). Petersen (1989) considered this a reasonde<br />
Merida in Venezuela, and only 1 of these occurs<br />
able suggestion since they share the same basic<br />
in the Cordillera de la Costa (Bunting, 1979; Croat<br />
number of x = 17 and large chromosomes also with<br />
& Lambert, l9X7).<br />
the centromere frequently located distally on the<br />
A preliminalw key and preliminary descriptions<br />
chromatids. Petersen (1989) believed that the Aglahave<br />
been pro(luced for South American lWieffenonemateae<br />
may be the closest relatives of Dieffenbachia<br />
species, but many species remain poorly<br />
bachieae based on the similarity in the constitution<br />
known. Thus the figures given for South America<br />
and size of the chromosomes, despite the fact that<br />
remain tentative.<br />
the former has a different chromosome base number<br />
Central American species constitute a group rel-<br />
(x = 20). Chromosome counts for Bognera reconatively<br />
isolated from South America, and only seven<br />
dita (Madison) Mayo & Nicolson, the only other<br />
species range into South America, especially along<br />
member of Dieffenhachieae, are also 2n = 32t. Bogthe<br />
Pacific slope and in the Magdalena River Valley<br />
nera, a monotypic genus, also shares a karyotype<br />
in Antioquia Department. The majority of Dieffenof<br />
medium-sized metacentric to sub-telocentric<br />
bachia in Central America occur from Nicaragua to<br />
chromosomes with Dieff7enbachia (Petersen, 1989).<br />
Panama, and most are relatively widespread in this<br />
GEOGRAPHICAL DISTHIBUTION AND ENDEMISM<br />
region. The most widespread species of lWieffenbachia,<br />
D. oerstedii, ranges from southern Mexico<br />
The genus lEaegenbachia has approximately 135 to western Panama (lXig. 29). Dieffenbachia wenspecies,<br />
most of them in South America. It ranges dlandii ranges from Mexico to Costa Rica (Fig. 28)<br />
from Mexico, throughout Central America, and to and both D. nitidipetiolata and D. tonduzii range<br />
the West Indies, Trinidad, and most of South Amer- from southeastern Nicaragua to Ecuador (Figs. 30<br />
ica as far south as Argentina, Paraguay, anel Boliv- & 29, respectively). Irl the latter country, D. nitiia.<br />
Distribution of species is unequal, with major d ipetiolata crosses the Andes into the Amazon<br />
centers of diversity including Colombia with 37 drainage in Napo. ReLnaining Dieffenbachia are all<br />
species, Ecuador (34), Peru (30), Brazil (27), Pan- narrowly isolated. Nine species are shared between
Volume 91, Number 4<br />
2004<br />
Croat<br />
Revision of Dieffenbachia 683<br />
Costa Rica and Panama, but even these are not independently after the Andes began to arise towidespread<br />
in the two countries. Those shared are ward the end of the Cretaceous (Raven & Axelrocl,<br />
D. aurantiaca, D. beachiana, D. davidsei, D. gra- 1974). The fact that there are no truly wide-ranging<br />
yumiana, D. killipii, D. nitidipetiolata, D. oerstedii, species, i.e., those ranging from Mexico to Brazil,<br />
D. tonduzii, and D. wendlandii. Dieffenbachia au- attests to this isolation. The high rates of endemism<br />
rantiaca occurs only in southwestern Costa Rica in in Costa Rica and Panama as well as Mexico perthe<br />
vicinity of the Osa Peninsula and in adjacent haps reflects the isolation of these areas during pe-<br />
Panama in the Burica Peninsula area (Fig. 27). riods when the oceans were at much higher levels<br />
Both Dieffenbachia beachiana and D. grayumiana than they are today, and when the area that is now<br />
range from northern Costa Rica to western Panama central Panama and Costa Rica was subsequently<br />
(Bocas del Toro) (Figs. 28, 27), while D. daviclsei clisconnectecl from South America. At the close of<br />
ranges from northwestern Costa Rica to central the Tertiary period, 18,000 years ago, the sea level<br />
Panama (San Blas) and Colombia (Fig. 27). was about 100 m higher than today (Holmes, 1969).<br />
A total of 11 species (42Wo of the total) of Dief- Much earlier the land mass of what is now Central<br />
fenbachia are endemic to either Costa Rica or Pan- America began to emerge as a series of islands durama.<br />
Endemism is particularly high in Panama ing the Oligocene epoch with further uplifting durwhere<br />
8 of the 26 species (31Wo) are endemic. In ing the Middle Miocene. It was not until the Upper<br />
Panama endemic species are D. copensis, D. cre- Miocene and Pliocene epochs that the final portions<br />
bripistillata, D. fosteri, D. fortunensis, D. galclame- of the isthmus of Panama emerged above sea level<br />
siae, D. Iutheri, D. panamensis, and D. pittieri (Figs. (Torre, 1965), and the final connection of Central<br />
27-30). In Costa Rica 3 of 26 species (12Wo) are and South America was about 5.7 million years ago.<br />
endemic. Costa Rican endemics are D. burgeri, D. To put these geological events in relation to the<br />
hammelii, ancl D. horichii (Fig. 27). Neither Mexicc moclern aroicl flora, it should be notecl that even<br />
nor Miclelle America have enclemic species. cluring this era preculsors to the extant flora proI)-<br />
DiefJenbflchifl isthmia (Fig. 28), D. Iongisl)eltha ably alreacly existe(l. The angiosperm floras of the<br />
(Fig. 29), and D. obscllrinervisl (Fig. 29) range Oligo(ene Wele Ivelieve(l to have consiste(! almost<br />
ae X OSS the l sthmus of Panama from Vel aguas Prov- elltirely of extant genera and with existillg spee ies<br />
inc e to northel ll Colombia. DieiZenbflc1lia aur(letifl- alllong Oligoe ene atl(l Plio( ene ftol as ('raklllajan,<br />
a,19. beachiflnfl, and D. grflyllmiflnfl (Figs.27,28) 19G9).<br />
ale the only s)ecies oc(urring in both Costa Rica Equally important as geo]ogy lo the isolcltion of<br />
an(l Panama. S(lme spe( ies are fulther isolate({. tlle Celltlal Amelicall aroid flola are ecologi(al fac-<br />
1)ieffenl)achia allrantiflc f1 an(1 1). burgeri are re- toI s fol Central Amel ic an spee ies of Dieffenl)achi(l.<br />
stri( te(l to the legion of the ()sa Peninsula in south- Mue h of eastern Panama c onsists of bl oad expanses<br />
western Costa Ric a (or in the ( ase of D. aurantiac of Tropical moist forest (T-mf) with other, generally<br />
in Panama on the adjacent Burica Peninsula; Fig. smaller areas of Premontane wet (P-wf) and Tropical<br />
27) and D. horichii is lestricted to a relatively small wet forest (T-mf) (Holdridge, 1967). In contrast to<br />
area on the Pacific slope of Costa Rica (Fig. 27). Panama, much of the Choco area of northwestern<br />
Several other species are also narrowly restricted Colombia consists of much wetter pluvial forest<br />
or known only from the type specimen. Dieffen- with annual precipitation exceeding 11,700 mm<br />
bachia fosteri is restricted to northeastern Panama (Gentry, 1982). This broad band of pluvial forest<br />
(Fig. 27). Dieifenbachia fortunensis is restricted to with its own suite of unique endemic species no<br />
the northern Chiriqui Province (Fig. 28). Dieffen- doubt acts as a dispersal barrier for species from<br />
bachia copensis is found only in the Cocle Province regions with less rainfall. It may account for those<br />
of Panama (Fig. 27), and D. galdamesiae in a small Panamanian and Costa Rican species that skip the<br />
area south of the Panama Canal (Fig. 28). wettest areas of northwestern South America but re-<br />
Further collecting in Colombia, especially along occur in the relatively drier areas of mesic western<br />
the western slope of the Andes, may change the Ecuador.<br />
distribution of Dieffenbachia7 but the current pat- Middle America has low species diversity with<br />
terns most likely reflect the realities of life zone Guatemala having only two species and Honduras<br />
ecology and geologic history of the area rather than three. Only Nicaragua, with six species, four of<br />
under-collecting. Since relatively few species of Ar- them restricted to the southeastern corner near Cosaceae<br />
are known to occur at lower elevations on ta Rica, is moderately rich in species. All except<br />
both the eastern and western side of the Andes, it D. standleyi and D. wendlandii appear to range into<br />
can be presumed that the evolution of the respec- the country from Costa Rica. The low species ditive<br />
Amazonian and Pacific coastal floras occurred versity and very low aroid endemism in Dieffen-
684<br />
bachia in Middle America is perhaps explained by<br />
its historic remoteness from existing large land<br />
masses to the north and to the south. The distribution<br />
of modern aroid species suggests that the<br />
northwestern part of Middle America may have<br />
been isolated from Costa Rica in the area of the<br />
San Juan Depression (Nicaragua). Many of the species<br />
that occ ur in Costa Rica or Panama enter into<br />
Nicaragua in only a small area in the southeastern<br />
Annals of the<br />
Missouri Botanical Garden<br />
in the United States in Florida, California, and Ha-<br />
. .<br />
WAll .<br />
TAXONOMIC TREATMENT<br />
Dieffenbachia Schott, Wiener Z. Kunst 3: 820.<br />
1829. TYPE: Dieffenbachia seguine (Jacq.)<br />
Schott.<br />
Seguinurn Raf., F1. Tellur. 3: 66. 121t36 [1837]. TYPE: Separt<br />
of the country. Though the existing flora of guinurn rnaculaturn Raf. {= Oieffenbachia seguine<br />
Guatemala (loes not reflect isolation from Mexico to (Jacq.) Schott].<br />
Maguirea A. D. Hawkes, Bull. rFOIey Bot. Club 75: 635.<br />
the same (legree, it is possible that the more ele-<br />
1948. TYPE: Maguirea spathi((lrpoides A. D. Hawkes<br />
vated portions of Guatemala, Nicaragua, and Hon- [Diefafenbachia palud icola N . F3. Br.].<br />
duras were isolated from major portions of Mexico<br />
by the Isthlnus of Tehuantepec. With no endemic Terrestrial; caudices thick, often elongate and<br />
Mexican sy)ecies, the Dieffienbachia flora reveals prostrate, rooting at the lower nodes, the older porless<br />
endemism than does Anthurium (Croat, 1983a) tions of the stem trailing across the surface of the<br />
or Philoden(lron (Croat, 1997). Both Mexican Dief- ground, often for considerable (listances; sap often<br />
fenbachia ale relatively widespread, with D. oerste- milky and frequently with valyillg concentrations of<br />
dii ranging to Panama (Fig. 29) and D. wendlandii<br />
oxalic acid, with conspicuous; annular leaf scars.<br />
ranging to l'ananla (Fig. 28).<br />
Petioles elongate, amplexicaule slleathed to the mid-<br />
The reluaining Costa Rican and Panamanian<br />
dle or sometimes to the apex; s;lleath unequal and<br />
species not allea(ly discussed above appear not to<br />
often free-ending at apex; leave o; c lustered in a tight<br />
have stron> tlffinilies with South American species<br />
whorl at the stem apex; I)lel e1e .s ovate to oblongand<br />
clearly (lo not have affinities with othel Cenllal<br />
ovate, elliptic, oblanceolate. ol ol)ovateX acuminate<br />
American sy)e( ies. On the other hand, there are<br />
at apex, acute to obtuse to lous(le(l at base, typically<br />
subcoriaceous, someli llle S val iegated throughsome,<br />
reltltively few, Central American species,<br />
out or in areas along the lzli(ll il) with paler colors;<br />
among thesl l). killil)ii, D. nitidipetiolata, and D.<br />
midrib raised on both siulltle ( s; primary lateral<br />
tonduzZi, tlsal ale likely to be of South Ameli(an<br />
veins pinnate, usually sunkell (II)oveX raised below,<br />
origin sin( e they are wide-ranging species in South<br />
much more prominent than tleA Illinor veins, all lat-<br />
America.<br />
eral veins extending to the Illulgills without forming<br />
a single collective vein lout with several primary<br />
HORTICU 1 ,'1't J 14 A I SIGNIFICANCE<br />
lateral veins often forming a se l ies of short, discon-<br />
Dieffenb(lchi(l, like many other members of the<br />
Araceae, is one of the world's most important ornamental<br />
l)lants. Owing to the attractive leaves and<br />
hardiness tIn(lel the difficult conditions found indoors,<br />
DieJ/enb(lchia remains one of the most important<br />
olnamental plants in homes, offices, and<br />
professional displays. Ornamental aroids play a major<br />
role in tlle foliage-plant industry in the United<br />
States, making up about one-third of total foliage<br />
plant sales (Henny, 1988). Dief7Senbachia is one of<br />
5 aroid genera routinely among the top 10 foliage<br />
plants in annual sales volume (Henny, 1988).<br />
The Araceae hold 7 of the top 13 positions in<br />
tinuous collective veins; inleAl l)l i mary lateral veins<br />
sometimes present; minor veils (listinct to obscure,<br />
usually not markedly raise(le sollletimes connected<br />
by transverse tertiary veins. I N Iv^LORESCENCES<br />
shorter than the leaves, 1 to several per axil; bracts<br />
short and usually inconspicuous; peduncle usually<br />
somewhat flattened and angulcll with one edge narrowed;<br />
spathe oblong, persistellle convolute at base,<br />
often somewhat constricted aI)out midway, opening<br />
usually only above the mid(lle, usually green on<br />
outside, somewhat paler within; spadix slightly<br />
shorter than the spathe, divided into pistillate and<br />
staminate portions, each with naked unisexual flowers;<br />
the pistillate portion basal, about as long as the<br />
terms of overall sales in North America, including staminate portion, fused to the spathe, remotely<br />
the first two (R. Henney, pers. comm.). An orna- many-flowered (typically 20 to 80 rarely to 160);<br />
mental cultivar of Dieffenbachia is the second most staminate portion clavate, white, free from the<br />
important in sales, and the genus consistently has spathe, densely many-flowered, often separated<br />
one or more taxa on the list of most popular orna- from the pistillate portion by a naked interval. Stamental<br />
plants in North America. Dieffienbachia minate flowers consisting of 4 stamens united into<br />
breeding and culture plays a major economic role a 4- to 5-sulcate, truncate synandrium; anthers lat-
Volume 91, Number 4 Croat 685<br />
2004 Revision of Dieffenbachia<br />
eral, contiguous, the common connective thick, sessile, depressed globose to depressed ovoid, 2- or<br />
fleshy, the thecae obovoid to oblong-elliptic, de- 3-lobate; ovules 1 per locule, pale green, semigloshiscing<br />
by short, apical, pore-like slits; pollen ex- sy, erect, anatropous; placenta axile to basal; stylar<br />
truded in strands, inaperturate, ellipsoid or oblong region inconspicuous; stigma large, hemispheric or<br />
or nearly spherical, large, averaging more than 75 2- or 3-lobate, about as broad as the ovary, yellow<br />
1lm, exine psilate to obscurely verruculate and/or to orange in color. INFRUCTESCENCE with fruitsparingly<br />
punctate-foveolate to densely foveolate; ing spathe often turning yellow, orange, or red,<br />
pistillate flowers modelately dispersed but often in breaking up longitudinally in fruit to expose the<br />
weak rows with 1 to 5(6) pistils per spiral, and colorful berries; fruits baccate, globose or 2- or 3-<br />
surrounded by 4 or 5 claviform white staminodia, lobed, 1- or 2(3)-seeded; seeds globose or ovoid,<br />
these longer than the ovary usually 2-5 mm, usu- the testa thick, smooth, green to blackish green;<br />
ally spreading, sometimes fused briefly at the base; embryo large; endosperm lacking.<br />
Ovaries 2- or 3-carpellate, sometimes l-carpellate, Chromosomes 2n = 34, 68.<br />
KFY ro DIEFFENBACHIA OF MEXTCO, C:ENTRAT AMFRICA, AND THE WEST IND1ES<br />
la. Petiole involute, extending to base of blade and frequently prolonged beyond the base of the blade.<br />
2a. Larger leaves regularly to more than 45 cm long and 23 cm wide, cuneate at base, coriaceous, usually<br />
glossy above, not variegated, uniformly green.<br />
3a. Petiole sheath markedly undulate, at least near the base; Atlantic slope.<br />
4a. Leaf b]ades matte and somewhat velvety to glisteningly ve]vety above, minutely wrinkled<br />
on uppel surface; clrying dark blae kish btown to dark ye]lowish brown above; Atlantic slope<br />
of Panama 21. 1). jvflnslm.entsis Croat<br />
4b. I,ceaS b1a(1c-s serrlig10ssy to glossy above an(S smoolh on upl)er surface; drying me(lium gray<br />
to (lark t)rownish gray above, g)a1er ar(1 ye110wish gray to I)alee yee110w-t)rown be10w - ---------<br />
24. 1). .sl(lr1(ll(loi (roal<br />
:3b. 1' lio1e shealh rlol rra1ke(11y L1rl(1u1ale; 1'ae ilie s10Z>e 1:3. 1). hori(11ii (r-otll & (,r-lyl1rr<br />
St>. I ( (IVf s rtlrely rrlo1e tharl 45 ( 1zl 10,-,g 01 2:3 ( rzl wi(1e .<br />
5(1. 1'1ilzlly 1(1lel1 Vei1lS 6 10 7 )(-1 si(1e; krlow11 olly l1olrl the ty1> 10(llity irl the 1'ar(1rzl (1(1tltl1<br />
(,, et, . . 22 1). /)i.ll.i.()t-i. 1s,,,r1<br />
5b. I,i,,,a,y 1t,1e,(,l vei,,s ,ts,,ally 1.5 Ot llO(.<br />
()t1. 1,tlt illtI(lUS Willl )lillltil\' 1dlPldl V('illS (1())1') lO 17 )('1 si(lf'; 1)ld(lf' t)tlS('OlUlIIS(' lO t011tl(1f'(l;<br />
1)ld(lP Slil[tl(' m0()SSy 1() tll()(1eld181)' m0()sS), [l()l d1 t11l 1)lilltilt'! Itit('ly Vtili('ttilf'(l; [)('li()lf' IlSIItilIy<br />
Wilil tI WllitiSil l)t[tl(l 011 IllP Al)tIXiAI Slil[tl('f'; i)tilitililtl (). 1). (r(l)ril)i*slill(ll(l (lo<br />
6b. Leat 1>1a(1es wi111 )1i1zl1> 1(1l Xa1 vf i1ls 1lslltl11y 1ll01e 11larl It) )( 1 si(1(; 1lslltl11y ( o-(11X1tl1 (l1<br />
1>(1se, llsllally 1zllle ar(1 sl1>velvely (11o/, 1lslltl11y 1>tl11a1f, ol1erl vtlrif ga1e(1; pf 1io1e- 1ae kit,<br />
a w1-ilish 1)an(1 o11 the tIl)tIXiclI SIII[tI('E'; Ni(4llAgIItI lo (O0OlllllitI ---------- ---------------- ------<br />
- - - - - - - - - - - - - - - - - - - - - - - - -- - - - - - - - - 2 ,5 . I) . l ( ) t I ( l I IZ i i ( j I ( ) ( I I (S J I a y L I I l l<br />
11). 1)elio1e shetllh er-ee t 10 irlvolule, erl(1ir, sllo1l ol I>la(Je 1>ase (eXe ep1 rare ly orl ll)per 1eaves).<br />
Tt1. Ulls1leat1le(l porliorl ol petio1e uslltl11y t1it1rlgu1tl1 ir] (10SS se(liorl, s1larply kef1e(1 lo ri(1g(1 (11>axitl11y,<br />
t11e rrargirls t1-li(kly winge(l 1. 1). (ltlr(lrlli(l((l ,rlg1.<br />
Ti). 1)etio1e teyo1l(t shenth sul)ter-ete, 1-oun(1e(1 ataxin11y, wil11 rrargirls rour(le(l lo ae ute (rlol wirlge(-1).<br />
tJd. lvlArllS witll pPliOlUS 01 rrldjol veirls ol 10we- t>1a(1e surlia(e rrlirlutely g1-anular--pu1)eru1erll lo pl1-<br />
1.>e1 ulerlt.<br />
9d. 1'rirrary<br />
1atera1 veins 23 to 36 per si(1ee, (1epa1lint, midril) usua11y dt dbOUt a (3()° angle;<br />
lili(tl'ih dn(t prililAly IdtElal VE,illS ('0t1Spi('UOUS0y pUt)CIUlUtEl with wllitisll tri(homes -----------<br />
2. 1). 6eachiclea Croat & (Jrayum<br />
b. Priltlaly latelal veins usually less than 18 pairs (rarely lo 22 in D. grayumiana) usually<br />
departing midril) 40°-6()° at blade mi(lpoinl; midlib and primary lateral veins infonspituously<br />
glanular-puberulent.<br />
10a. Blades narrowly oblanceolate, 6.4 times longer than wide, less than 6 cm wide ----- -<br />
5. D. copensis Croat<br />
10b. Blades elliptic to obovate-elliptic, oblong-elliptic, to narrowly oblong-lanceolate (rarely<br />
narrowly oblanceolate in D. fortunensis), 1.7-5.2 times longer than wide, 6.7-39 cm<br />
wide.<br />
lla. Petioles with sheaths ending no more than 5 cm from base of blade-------------------<br />
24. D. standleyi Croat<br />
llb. Petioles with sheaths ending more than 13 cm from base of blade.<br />
12a. Primary lateral veins arising at 30°-40° angle; central Panama ----------<br />
----- 10. D. galdamesiae Croat<br />
12b. Primary lateral veins arising at mostly 55°-70° (to 80° in D. grayumiana);<br />
Costa Rica and western Panama.<br />
13a. Plants usually stout, 1.5 m tall; blades narrowly ovate, (22) 30-54<br />
cm long, 10-32 cm wide (averaging 36 x 18 cm), 1.5-2.6 times
686 Annals of the<br />
Missouri Botanical Garden<br />
longer than wide; Costa Rica to western Panama, 0-1300 m but mostly<br />
near sea level 11. D. grayumiana Croat<br />
13b. Plants medium-sized, rarely more than 1 m tall, usually less; blades<br />
mostly narrowly oblong-lanceolate, 15-33 cm long, 4.2-13 cm wide<br />
(averaging 21 x 6.8 cm), 2-6.3 times longer than wide; Panama<br />
(Chiriquf), 900-1600 m 8. D. fortunensis Croat<br />
8b. Plants with petioles or major veins of the lower blade surface glabrous.<br />
14a. Petiole sheaths decurrent apically (lacking prominent protruding extensions); Atlantic lowlands.<br />
15a. Blades drying blackened; Panama (Bocas del Toro), near sea level - ----------- --<br />
9. D. fosteri Croat<br />
15b. Blades drying yellowish brown, greenish to yellowish brown.<br />
16a. Petioles very glossy, drying as if covered with shellac; Nicaragua to Ecuador<br />
18. D. nitidipetiolata Croat<br />
16b. Petioles not glossy, not drying as if covered with shellac.<br />
17a. Plants less than 1 m tall; blades usually less than 10 cm wide -- -----------<br />
12. D. hammelii Croat 8 Grayum<br />
17b. Stems usually more than 1 m tall; blades more than 10 cm wide.<br />
18a. Petioles matte; leaf blades usually subcordate at base, usually flecked<br />
with creamy yellow 11. I). grayumiana Croat<br />
18b. Petioles semiglossy; leaf blades cuneate to rounde(l or truncate at<br />
base, usually plain green (rarely mottled with pale gleen).<br />
l9a. Petioles terete; sheaths decurrent at apex, tighlly inrolled with<br />
one side completely hidden by the other; Mexie o to Panama but<br />
but primarily on Pacific slope (except in Oaxa( a and Veracruz<br />
on Atlantic slope) 26. I). wendlandii Schott<br />
l9b. Petioles usually obtusely sulcate, sometimes lelete with an obtuse<br />
medial rib; sheaths open, the margins elect; Nicaragua to<br />
Cololllbia 16. D. Iongi.s/)(llll(l F:ngl. 8 K. Krause<br />
1X11). Ietiole sheaths (at least on one side) rounded to auriculate at apex.<br />
2()a. Blades with more than 18 plimary lateral veins or with primary lalelal veins obscure,<br />
barely more conspit uous thtln interprimary veins.<br />
21a. West Indian and Soutll American species; plants with botll sllXly sulcate petioles<br />
and a thi(kened, protruding spadix; fruits 2- to 3-lol(}(l<br />
23. I). .s(guine (Jacq.) Schott<br />
21b. Mainly Central Ameli(an species (D. killipii, D. isthmia, (1X(l 1). obscurinervia<br />
also in South America).<br />
22a. Blades with 10 lo 13 pairs of primary lateral veins, these moderately inconspicuous,<br />
balely more obvious than interprimary ve ills; petioles and<br />
lower miflribs with pale spots; Central Panama to (ololzll)ia ------<br />
----------------- -------------- ---- --- ----------------- -- -- --- 1(). I). obscurinervia Croat<br />
22b. Blades with 18 lo 28 pairs of primary lateral veins, (Ie( i(ledly more conspicuous<br />
than tlle interprimary veins; petioles and lowet lzlidrib lacking<br />
spots; Costa Rica, Golfo Dulce region 3. l). I)llrg(ri Croat 8 Grayum<br />
20b. Blades variously shaped, matte to glossy above, with 8 to 18 prilllly ltlteral veins per<br />
side.<br />
23a. Spadix lacking medial sterile region, the male and femalc- legioIs c.ontiguous or<br />
nearly so.<br />
24a. Petioles usually solid green, not densely and conspi( vlotlsly pale-maculate.<br />
25a. Blades with major veins on the lower surface ganular-puberulent ---<br />
17. D. Iutheri Croat<br />
25b. Blades with major veins on the lower surface glabrous -------<br />
------------------------------- ---------------- - -------------- -- 15. D. killipii Croat<br />
24b. Petioles densely and conspicuously pale-maculate.<br />
26a. Stems more than 1 cm thick; petioles never pale-maculate; primary<br />
lateral veins usually departing midrib at less than 90°; Costa Rica<br />
(Osa Peninsula), Panama, and Colombia 15. D. killipEi Croat<br />
26b. Stems usually less than 1 cm thick; petioles distinctly pale-maculate;<br />
primary lateral veins usually departing midrib at 90° or more; Costa<br />
Rica, Sixaola region, Panama, and Colombia --------------------------------<br />
------- -- ---------- - - 7. D. davidsei Croat 8 Grayum<br />
23b. Spadix with an evident medial sterile region, pistillate and staminate portions<br />
separated by a distinct naked spadix axis.<br />
27a. Plants usually less than 0.5 m tall 20. D. oerstedii Schott<br />
27b. Plants to more than 0.5 m tall.<br />
28a. Blades drying dark brown to blackened on upper surface.<br />
29a. Blades usually with posterior lobes; lower blade surface drying
Volume 91, Number 4<br />
2004<br />
Croat<br />
Revision of Dieffenbachia<br />
yellowish brown to yellowish gray-brown to dark yellow-brown<br />
or ye]lowish green; stems solid dark green, drying glossy and<br />
minutely wrinkled (the areoles interspersed with raphide cells);<br />
Panama, Veraguas Province and the Azuero Peninsula in the<br />
west (at 700-900 m in Herrera and Los Santos Provinces) to<br />
Darien Province in the east, and to Colombia 50-800(1000) m<br />
14. D. isthniia Croat<br />
29b. Blades lacking posterior lobes; lower blade surface drying grayish<br />
black; stetns mottled dark green, drying smooth with a dense<br />
layer of raphide cells (but not minutely wrinkled); Panama, Bocas<br />
del Toro, sea level 9. D. fosteri Croat<br />
28b. Blades drying yellowish green to dark gray-green, rarely brownish on<br />
upper surface.<br />
30a. Petioles usually white at base; blades usually less than 20 cm<br />
long 20. D. oerstedii Schott<br />
30b. Petioles not whitish at base, frequently paler than stem but not<br />
markedly paler than the remainder of the petiole; blades usually<br />
more than 20 cm long.<br />
31a. Petioles usually sharply C-shaped, discolored and whitish<br />
at the base; blades matte 20. D. oerstedii Schott<br />
31b. Petioles terete to obtusely C-sllaped or obtusely D-shaped,<br />
not sharply sulcate, not discolored and whitish at base;<br />
blades glossy to semiglossy.<br />
32a. Species of mostly dry habitats in western Central<br />
America (Mexico to Panama); blades subcoriaceous,<br />
selrliglossy on upper surface, (15)20-55(65) cm long<br />
(avelaging 35 x 17 cm); 75 to 900 m in elevation<br />
26. D. wendlandii St hott<br />
320-). Spet ies of wet habitals, southeastern Ni^aragua and<br />
along the. entile Atlali( slole an(S the ()sa lveellirlsula<br />
of (4ostcl lli(*a; I)la(les tlso(lelaleZy (*oria(*eotIsX<br />
gleessy ols 11se tIl)pel .sulfa( e., 1()-.3() ( rts lorig., (avel<br />
cigint, 2.3 X 12 (n); sea lt'vEl to 2()() 21, nlOStIy tIt<br />
leess 111as 1()() rll its elevaliors -- - -- - - - - --<br />
687<br />
- -- ------------------------------- ?1. 1). (orl.(itltl(l (31'0dl & (,I'AyLItll<br />
1. Dieffellbachia aurantiaca 11Jllgl., Anales Tnst. erlding an(l obliquely rouneled to rourl(le(l-aulicu-<br />
Fis.-6eogt. Nac. Costa Rie a 9: 2()9. 1898. late distally; unsheathe(l ^)ortion 0.tS-2 c m long,<br />
TYPE: Costa Rica. Puntarenas: "ill silvis pro- angular to + triangular in c ross sec tion, flat to<br />
pe Santo Domingo atl sinum dule em [Santo bloadly sul(ate a(laxially (sometimes with a medial<br />
Domingo de Golfo Dulce], fructif. Mart.1896," keel), adaxial margins thin and revolute, acutely<br />
A. Tonsluz 9961 (holotype, B!; isotypes, CR!, keeled abaxial]y, abaxial margins thickly winged,<br />
US!). Figures 2, 27A.<br />
sometimes with a medial keel, thin, revolute, sometimes<br />
medially keeled at malgins; blades oblong-<br />
Stout herb, 0.7-2.3 m tall; sap fetid and caustic;<br />
elliptic to ovate-elliptic, slightly inequilateral, one<br />
stems erect at apical part, to 2 m long, the older<br />
side 1-1.5 cm wider than the other side, usually<br />
portion reclining and up to 2 rll long; internodes<br />
2.0-4(6) cm long, 5-7(10) cm diam., dark green to<br />
subcoriaceous, acuminate to abruptly acuminate at<br />
pale greenX semiglossy to glossy, streaked with paler<br />
apex, slightly inequilateral and obtuse to rounded<br />
green; petioles 13-33(48) cm long (averaging 24 cm<br />
or subcordate (rarely attenuate on one side) at base,<br />
(26)31-57 x 11-27 cm (averaging 39 x<br />
long), C-shaped at base in cross sectione moderately<br />
19 cm),<br />
spongy, medium green, semiglossy adaxially, matte 1.7-2.6 times longer than wide (averaging 2 times),<br />
and acutely l-ribbed abaxially, the surface finely ranging from about as long as petioles to 2.8 times<br />
dark striate, sometimes variegated with paler green longer than petioles (averaging 1.7 times longer);<br />
markings, sheathing<br />
margins weakly undulate; upper surface dark<br />
1/3 to nearly throughout (35%-<br />
97% their length and averaging 77Wo); sheath 6.5- green, concolorous or sometimes variegated, drying<br />
25.5(38) cm long (averaging 17.7 cm), medium dark olive-green to medium gray-green, weakly<br />
green, finely dark green striate, sometimes varie- glossy to semiglossy; lower surface moderately palgated<br />
with paler green markings, adaxially acute er, matte to weakly glossy, drying pale yellowish<br />
margins sometimes much paler, with margins in- green; midrib flat to broadly concave above (broadcurled<br />
but usually not overlapping, the apex free- ly sulcate near base), 5-20 mm diam., sometimes
Volume 91 Number 4<br />
2004<br />
Croat<br />
Revision of Dieffenbachia<br />
whitish, faintly stliate above, bluntly acute to V- Panama. It occurs in wet forests and swampy sites<br />
shaped (a continucltion of the triangular petiole) be- from near sea level to 780 m in Tropical wet forest<br />
low, drying brown below, fclintly striate; primclry lat- (T-wd) and Prernontane wet forest (P-wfJ life zones<br />
eral veins (8)12 to 14 per side, departing midrib at (Holdridge, 1967).<br />
a steep angle, spreading at a 50°-70° angle, grad- Phenology. Dieffenbachia aurantiaca begins to<br />
ually spreading in a broad curve, slightly to mod- flower in the early rainy season with flower buds<br />
erately paler than surface in the proximal one-halL having been seen as early as May and as late as<br />
weakly raised to convex in valleys, flat and darker August, and mature open inflorescences seen bethan<br />
surface toward margins, drying mostly paler, tween May and December. Fruiting occurs between<br />
sometimes darker than surface above, weakly con- September and March.<br />
vex and slightly paler than surface below, drying Discussion. The species is characterized by its<br />
yellowish and paler than surface or brownish and more or less elliptic, usually unvariegated, greendarker<br />
than surface below; interprimary veins pre- drying blades, obtuse to subcordate at base, but<br />
sent or absent, usually with 1 between each pair of especially by the triangular and weakly sheathed<br />
primary lateral veins in the lower 1/3 of the blade; petioles, decurrent at apex. It is probably most<br />
minor veins darker than surface, visible but mod- closely related to D. horichii, but differs from that<br />
erately obscure below. INFLORESCENCES to 3 species in having a longer free portion of the petper<br />
axil; peduncle (7)10-18 cm long, acutely an- iole, which is more or less triangular. Also vegegular<br />
on one side, drying striate, 3-6 mm diam.; tatively similar are D. Iongispatha and D. nitidispathe<br />
17-25(38) cm long, 2-3.5 cm wide, flatten- petiol(lta, but both differ primarily for thfe same<br />
ing to 5.7-8 cm wide on tube, 2.5-6.'S cm wide at reasons, i.e., that the free portion of the )etiole is<br />
constriction, 3-4.3 cm longer than the spcldix, glcld- not tliangulal.<br />
ually long-tcll)eled towald clpex flom the middle, An unusual (olleetion, Croat 677()(), from a reluniformly<br />
lip>,ht ;,>reen to medium p>,reen thloughout; atively (lry area on the Pa( ifie slove of Costa lti( a<br />
weakly glossy oulsi(leX glossy insi(le; S0)clthe lXlcl(lP ((rier thatl thP ty[)i('Al SitC,% for this sy)e( ies), hdS a<br />
2.S-7 ( m wi(le wherl ficittene(l; .s/)ez(lix 16)-2()(3.-3) )Cti()lP tSldt iS (Ies( I ilve(l dS terete th(ugh ttle ( (lrTl<br />
lorlp>; [tee l)otliorl to l5.rz ( rTl lorlp>,; listillcile Ie(liotl olkletwise rTlal([les 1). (lllr(lrlti(l((l. '1'S1e (ol-<br />
})olliorl G..r_t.r(l S.5) ( trl lolly l..5-2 ( rTl (licirDl. 1e( 1 iotl looks vaguely l ike 1). niti(li)( tiol(lt(l whi( h<br />
tSltotlgllolul (tssotilly dtyirl;,r ()-9 tnm (licim.); lerlile is olhetwise lourl(l only on the Atlanti( slo^)e. A<br />
StcirTlill lle })ollioll 7-12..S ( rTl lorlp>! wSlile.. [cly)ele(<br />
tOWcltd cl[)CX atl(l WEclkly tapC,[-e(l S{tgrhtly tOWcltd<br />
liclse; illtetttle(iclles stelile se;,rtllerlt 1..z-4 ( lYl l(,T,<br />
Willl cl teW S(cllltste(l lliStilS irl lowet half arl(l a [eW<br />
s(altele( slamitlo(lia in ul)l)er half; listils 51 to 72,<br />
iltegularly s(attere(l! with .-3 to 4(6 to 7) a(ross the<br />
wi(lth of the sl)a(ix Se[atate(l frorn one another lly<br />
1/2 to 4.0 times their wi(lth, (Iey)resse(l-glol)oseX to 2<br />
tllm long, 1.2-1.6(2.8) nlm ({iam., I)ale gleen; stigmas<br />
c ushion-sha)e(l to 2 mm high, 2.tS-3 mm<br />
wide, white; starrlino(liaS to 5 pel pistil, 1.5-2(3.8)<br />
mm long, flee ol l)liefly united at l)ase, held well<br />
above the stigmas sometimes united for Illu(h of<br />
their length; synandria 1-2(3.4) mm diam., margins<br />
irregularly angled with lounded, linear to 3-sided<br />
slit medially at apex. INFRUCTESCENCE 19-24<br />
cm long; spathe orange outside; spadix 8-15 cm<br />
long; berries red-orange, B & K yellow-red 6/2.5 to<br />
B & K yellow-red 7/5 to red B & K red 6/10 (Berlin<br />
& Kay, 1969), subglobose, ovoid to ellipsoid, 7-10<br />
mm long.<br />
Distribution and habitat. Dieffenbachia aurantiaca<br />
is known only from southwestern Costa Rica<br />
and adjacent Panama, in the region of the Osa Peninsula<br />
in Costa Rica and the Burica Peninsula in<br />
rl'on(l|v; ( olle ( tion at lJA origirlally Ial)eale,(l 70tlelllz<br />
689<br />
996/7 WdS t-elal)ele(l 7/77 (Iestite tSle [;d('l 1[lAl il<br />
was also ( ol 1e( 1e(l i rl Mat ( h 1 4;J9(). 11 aI)I)eat S lo [)e.<br />
i(letili(al to Iwo othet sI)e( imens 1a1)e1e(1 T0slelllz<br />
9961, tSle ty^)e ( ol1e(>tiorl num[)er.<br />
Aelellllotl(ll .s1)()( Irn(l1s ('X(1t71.1/1()(l. (j()S I A 141CA. I t
690 Missouri Botanical Garden
Volume 91, Number 4<br />
2004<br />
Croat<br />
Revision of Dieffenbachia<br />
Bartolo Limite, 7 mi. W of Puerto Armuelles, Croat 35079 lateral veins 23 to 30(36) per side, departing midrib<br />
(MO); Burica Peninsula, 8 km W of Puerto Armuelles,<br />
at a 70°-110° (to 45° toward apex and sometimes<br />
Croat 21961 (F, MO); Quebrada Manzanillo, 9 km S-SW<br />
of Puerto Armuelles, Busey 743 (MO); Quebrada Quana- at base) angle, arising acutely then straight to<br />
banito beyond La Represa, 2 mi. SW of Puerto Armllelles, weakly curved to the margins (then sweeping prom-<br />
Liesner 114 (MO, US).<br />
inently toward apex), usually quilted-sunken above,<br />
convex, puberulent with thick, whitish trichomes,<br />
2. Dieffenbachia beachiana Croat 8z Grayum, sometimes with adjacent veins alternating ascend-<br />
Novon 9: 492. 1999. TYPE: Panama. Bocas ing and descending below; interprimary veins usudel<br />
Toro: Chiriqui Grande-Fortuna, 13.2 mi. W ally present, scarcely less visible than primary latof<br />
Chiriqui Grande, 8°45'N, 82°lO'W, 310 m, eral veins; minor veins moderately distinct and<br />
T B. Croat & M. H. Grayum 60130 (holotype, weakly raised below. INFLORESCENCES 1 to 3<br />
M0-323065!; isotypes B!, K!, PMA!, US!). Fig- per axil; peduncle 9-13 cm x 5-7 mm, drying 3-<br />
ures 3, 28B.<br />
4 mm diam.; spathe 10-19 cm long, gradually constricted<br />
at middle, green throughout, gradually<br />
Slender herb, 40-100 cm tall; stems briefly<br />
long-tapered to apex; spathe blade to 3 cm diam.<br />
creeping at base; internodes 2-6 cm long, 1.5-3.5<br />
cm diam., medium green to olive-green, sometimes<br />
when flattened; spathe tube 1-2 cm diam.; spadix<br />
13-15 cm long; pistillate portion 4.5-6 cm long,<br />
streaked with cream, semiglossy and obscurely<br />
roughened. LEAVES clustered near stem apex,<br />
drying 7 mm diam. throughout; fertile staminate<br />
portion 5-6.5 cm long, drying 4 mm diam. througherect-arching;<br />
petioles 17-46 cm long (averaging<br />
26.5 cm long), sheathed 25Wo-83Wo of petiole (avout;<br />
intermediate mostly sterile portion usually 2-<br />
eraging 54%); sheath 10-22 cm long (averaging<br />
3.5 cm long, 2 mm diam., sometimes with pistillate<br />
14.2 cm), decurrent at apex; unsheathed portion<br />
and staminate portions almost contiguous; pistils 46<br />
(2.5)10-30 c m long, broadly C-shaped in cross secto<br />
66(100), 2 to 4 situated across the width of the<br />
tion, dark green to brownish, flattened with ae ute,<br />
spadix, ovary oblong-ellipsoid, 1.5-2 x 1-1.6 mm;<br />
erect margins or sharply to bluntly sul( ate a(laxistigmas<br />
subgloloular, about as broa(l as the ovary;<br />
stamino(lia narrowly clavate, usually not at all fused<br />
ally, surface pale green-mottled, matte, usually minutely<br />
roughened and with scattere(l scales, whitish<br />
at t)ase, ca. twice as long as pistil; synandria 1.8raphide<br />
c e11s visible, drying with s(attere(l clusters<br />
2.6 nlm diam., margins irregularly sut)roun(ledX<br />
drying smooth an(l light t)rown at apex. INFRUCof<br />
pustular raised areas with granular-puberulent<br />
protrusions; I)l(lde.s narrowly elliptie to lan( eolate,<br />
'I'ESCENCF, with spathe (10)14-16 cm long, somerarely<br />
narrowly ovate, inequilateral, one side 1-2<br />
what flattene(l, yellow-green mottled green an(l<br />
cm wider than the other side, thinly (oria(eous to<br />
white with darker flec king, maturing to ol ange; spa-<br />
(lix 6-10 (m long; berrie.s orange, subglot)ose, 6-8<br />
subcoriaceous, drying papyraceous, weakly bi(olomm<br />
diam.<br />
rous, + equilaterally acuminate at apex (the acumen<br />
to 5 mm long), slightly inequilateral and acute, Distril)ution (ln(X hfll)itflt. Diegenl)lchifl l)eflchirounded<br />
or truncate (rarely subcordate in Panama) *lnfl ranges from northeastern Costa Rica to western<br />
at base, 16-41 cm long, 6.5-15 cm wide (averaging Panama (Bocas del Toro, Chiriqui, and Veraguas)<br />
28 x 10.7 cm), 1.8-5.3 times longer than wide at elevations of 40 to 800 m. In Costa Rica it occ urs<br />
(averaging 2.6), 0.7-1.9 times longer than petioles on the Atlantic slope of the Central Cordillera and<br />
(averaging 1.12 times longer than petioles); margins the Cordillera Talamanca, ranging from the Saracrisped-undulate;<br />
upper surface dark green (in piqui region to Tortuguero and Siquirres.<br />
Panama sometimes mottled with white or cream), Phenology. DieJ:fenbflchifl beflchiflnfl initiates<br />
semiglossy (rarely matte), lower surface semiglossy inflorescences in the late rainy season with plants<br />
to weakly glossy or matte, slightly paler; midrib flat- reaching anthesis in the dry season (January<br />
raised above, often striate, usually concolorous through April). Immature fruits have been seen<br />
above, convex to thicker than broad below, puber- from April to September and mature fruits have<br />
ulent with thick, whitish trichomes below; prim(lry been seen from April to December.<br />
Figure 2. Dieffenbachia aurantiaca (Croat 35292). A. Habit, showing open inflorescence.-B. Close-up of spathe<br />
and spadix (spathe held in a fully splayed position). C. Close-up of leaf showing fully sheathed petiole.-D. Leaf<br />
cluster with open spathe, showing side view. E. Close-up of portion of spadix with pistils showing stigmas and the<br />
overtopping club-shaped staminodia. F. Close-up of staminate portion of spadix showing strands of pollen emerging<br />
from between androecia.<br />
691
692<br />
:: A:<br />
Annals of the<br />
Missouri Botanical Garden<br />
Figure 3. Diefenbachia beachiana. A. A series of leaves showing adaxial surface (Croat 44283). B. Close-up<br />
of leaf cluster showing variegated leaves and a cluster of inflorescences (Sims 8). C. Adaxial surfaces of leaves and<br />
open inflorescences. D. Close-up of inflorescence showing emergent portion of the spadix and adaxial surface of<br />
petiole. C, D. (Croat 68444).
Volume 91, Number 4<br />
2004<br />
Croat<br />
Revision of Dieffenbachia<br />
Discussion. The species is characterized by its Cultivated specinzens. Costa Rica. Henny 5 (M0). Hemoderately<br />
thin, quilted blades with many broadly<br />
redia: Finca La Selva, O.T.S. Field Station, oliginally collectecl<br />
by Jim Beach, cultivated at Missouri Botanical Garspreading<br />
primary lateral veins and crisped-undu- den (MBG), vouchered as Croat 59152 (M0).<br />
late margins with the lower midrib and primary lateral<br />
veins puberulent. DieJJ:7enbachia beachiana is 3.<br />
similar to D. galdarnesiae7 a species from central<br />
Panama that also has somewhat puberulent midribs<br />
on the lower blade sudaces. That species differs in<br />
having the pubescence much shorter, merely granular-puberulent,<br />
and has fewer than 22 veins per<br />
side (vs. 23 to 36 for D. beachiana) that arise from<br />
the midrib at a 30°-40° angle (vs. 70°-110°). In<br />
addition, Panamanian populations of D. beachiana<br />
differ in having their blades usually white- to<br />
Dieffenbachia burgeri Croat & Grayum, sp.<br />
nov. TYPE: Costa Rica. Puntarenas: Palmar<br />
Norte-Panamanian border7 3 km N of turn-off<br />
to Rincon, 8°48'39"N, 83°16'18"W, 110 m, 10<br />
Sep. 1996, E B. Croat & D. Hannon 79211<br />
(holotype, MO-5170493!; isotypes, AAU!, B!,<br />
CAS!, CR!, COL!, DUKE!, EAP!, F!, GH!,<br />
HUA!, INB!, K!, M!, MEXU!, NY!, PMA!,<br />
RSA!, US!, VEN!, UB!, WU!). Figures 4, 27B.<br />
cream-mottled, whereas those of D. galdarnesiae Planta terrestris, 0.5-1 m; internodia 0.5-2.0 cm longa,<br />
are always solid green in color. Dieffenbachia be- 1.2-2.5(3.5) cm diam.; petiolus 13-48 cm longus, vaginatus<br />
1/3_2/3 longitudinis; vagina 8.5-20 cm longa, inequiachiana<br />
is also somewhat similar to D. grayurni- lateralis acute ad apicem apex; pars libera 5.3-29.5 cm<br />
ana7 but that species differs in having the veins longa; lamina oblongo-lanceolata vel anguste elliptica,<br />
merely minutely granular in slender rows on drying, 25-40 cm longa, 5-16 cm lata, nervis primariis lateraliand<br />
in having somewhat more ovate and wider bus (13)18-28 utroque, inflorescentia l -7 in quoque axblades.<br />
illa; peduneulus 7.5-12 cm longus; spatha 1].5-15(21)<br />
cm longa; spadix 9-15.6 cm Songus; piKstilla 21-37.<br />
A single collection (Cro(t 6695X) from Verclguas<br />
Province in Panama (lifferx in having the primary Herlg, (). S- 1 m tall, sa, milky, sharply foetid;<br />
latercll veins curving more prominently towar(l the interno(les glossy to semiglossy, (lrying fre(luently<br />
apex than rllatericll frolll eIsewhele ill westeln l'cln- lllatte an(l millutely warty, ()..S-2 ( m long, 1.2anla<br />
and (3oStcl Ri( a. In cld(lilion, the pul)es;( en( e 2..5(.-3..5) ( m (lianl., (lark green to }v1a( kis;h green,<br />
is nlerely granulclr-l)ul)el ulerlt l ather than pubet u-<br />
t. H(lltl/tl(l 966()7 (-olle(<br />
te(l clt l,(l Selvcl in Heledica<br />
Province in Costcl ltica, ploba})ly repreF;ents<br />
a hybrid between D. beachiana an(l 1). (on(illn(l.<br />
The specilllen has tfile sliglltly s( abrous petioles<br />
an(l the impressed Inajol veins of D. b()el(hieln(l, lxut<br />
the blades are mole or less elliptic and dry the<br />
colol of D. concinn(l.<br />
A*lflltiotl(ll s/)ecilrze/ls S()(M (E()S'I'A 141(CA. Heresflia:<br />
llfo leje-llfo Sardinalito, Atl. slo^)e of Vol( tirl 13atva, (,r(l-<br />
rllm bX99 (M()); Sat1 Jose-lvlo. Viejo, vi(. of Chilarrlarlle,<br />
l 1.6 mi. N of (2aril)larle o, Cro(lt be'.X.58 (}3, Cll, M()); Iq'i1( a<br />
La Selva, rlear Rfo l'uetlo Viejo, BurW,rer & Stolze 5754<br />
(CK, 1'^); Zona Plote(tora, N slolles of Vol(an l1arl)a, Rfo<br />
Peje-Rfo Gua(imo, Grelyum & KSchltz 3220 (DUK1,). Li-<br />
mon: Rio Pa( uare-Quebra(la l)iablo, ea. 2.5 km 1E ol Si-<br />
quirres, Grayum 7698 (M0); la. rl'oltugueton Est. Agua<br />
Fria, R. Robles 1234 (CR, M0); I, Colombiana Farm,<br />
United FIU jt CO, Standley 36840 (US). Puntarenas: Gol-<br />
fito, Par. Nac. Esquirlas, Quebrada Gamba, Sanchez 539<br />
(M0). San Jose: Vazquez de Coronado, Braulio Carrillo<br />
NP, along hwy. San Jose to Siquilres, trail to Rio Sucio,<br />
Croat 7X77l (INB, M0, WU). PANAMA. Bocas del<br />
Toro: Chiriqui Lagoon, Water Valley, von Wedel 1438<br />
(M0); lO km SW of Chiriqui Grande, Thompson 4937<br />
(CM); Fortuna Dam-Chiriqui Grande, 7.3 mi. N of bridge<br />
over Fortuna Dam, 3.2 mi. N of Continental Divide, Croat<br />
& Grayum 60255 (M0); Chiriqui Grande-Fortuna, 7.7 mi.<br />
W of Chiriqui Grande, 1.5 mi. W of Punta Pena, Croat &<br />
Grayum 60094 (K, M0, SC75); near hwy. to Chiriqui<br />
Grande, McPherson 11816 (M0). Veraguas: vic. of Santa<br />
Fe, 8 mi. N of Escuela Circlo Alto de Piedia, Croat 66953<br />
(M0, PMA, SCZ, US).<br />
693<br />
Iryirlg (Iark })rown to })Iae k Or yellow-l)rown Or yel-<br />
low-greerl. I,lq,AVF,% s( attere(l along stenl with areas<br />
exose(l ex( e)t neal a)eX; /seliol().s 1.-3-48 ( nl long<br />
(averagi ng 26) ( m long), (Iark green, s;u rf:d( e some-<br />
W}at rll()ttle(lX weakly r)ale-streake(l neal lease,<br />
glossy to s;enliglossy, sheathirlg 1/3 tO 2/3 the length<br />
of the yetiole (().S their average }ength); sheath 8.5-<br />
2() ( nl long (averaging 12.6 ( m), sometinles soli(l<br />
(reamy white, with margins often drying thin an(l<br />
light l)rown, the tiy) inequilaterally ae ute; un-<br />
sheathe(l portion 5.3-29.5 c m long (averaging 12.9<br />
cm), variable in cross section, from subterete to C-<br />
shape(l or U-shape(l, sharply sulcate to somewhat<br />
flattene(l near apex a(laxially, the margins obtuse to<br />
acute; I)lade.s oblong-lane volate to narrowly elliptic,<br />
25-40 cm long, 5-16 cm wide (averaging 30.5 x<br />
10.5 cm) 1.9-3.7 times longer than wide (averag-<br />
ing 2.8 times longer than wide), 0 83-1.6 times lon-<br />
ger than petiole (averaging 12 1 times longer),<br />
slightly inequilateral, one side 0.4-1.4 cm wider<br />
than the other side, thinly coriaceous to subcoria-<br />
ceous, slightly to moderately bicolorous, gradually<br />
long acuminate at apex, narrowly acute to rounded<br />
and equilateral or slightly inequilateral at base (one<br />
sometimes up to 6 mm higher on the midrib than<br />
the other); upper surface solid dark green, matte to<br />
weakly glossy (sometimes variegated with pale mot-<br />
tling), drying gray-green to dark olive-green; lower<br />
surface slightly paler, semiglossy to weakly glossy
694 Annals of the<br />
Missouri Botanical Garden<br />
Figure 4. Dieffienbachia burgeri. A, C, D. (Croat & D. Hannon 79211). A. Side view of whole plant showing<br />
roots, stem, leaves, and inflorescences. B. (Croat & Grayunz 59814). Cultivated collection with open inflorescence.<br />
C. Close-up of inflorescence with spathe cut open. D. Mature infructescences, one open with berries exposed.
Volume 91, Number 4<br />
2004<br />
Croat<br />
Revision of Dieffenbachia<br />
(sometimes matte or weakly glossy on both surfac- life zones (Holdridge, 1967). It occurs in wet forests<br />
es), drying medium yellow-green to yellow-brown, and swampy sites.<br />
midrib above flat to sharply sulcate, sometimes flat- Phenology. Flowering in D. burgeri occurs in<br />
raised, 3-5 mm wide, semiglossy, concolorous, dry- the late wet season to early dry season from Noing<br />
slightly darker than surface, convex to thicker vember to March, and mature fruits have been seen<br />
than broad below, convex toward apex, slightly pal- from early April to early October.<br />
er than surface, drying dark brown to yellow-brown, Discussion. The species is characterized by the<br />
often acutely l-ribbed, primary lateral veins (13)18 petiole sheathed 1/3z/3 of its length, with the sheath<br />
to 28 per side, departing midrib at an acute angle, acute at the apex, and the usually matte, greenishthen<br />
spreading at (40°)45°-70° angle, sweeping drying leaf blades with numerous primary lateral<br />
along margin, not forming collective veins, sunken veins. The blades are quite variable, ranging from<br />
to quilted above, convex beneath, drying darker or narrowly oblong-elliptic to ovate-elliptic, oblonglighter<br />
than surface, the interprimary veins slightly lanceolate or narrowly elliptic. Dieffenbachia burless<br />
prominent than primary lateral veins, minor geri is most easily confused with D. oerstedii and<br />
veins moderately close and darker than surface differs from that species in having the petiole<br />
(drying weakly raised), surface minutely speckled sheath acute at the apex, rather than free-ending<br />
on drying. INFLORESCENCES 1 to 7 per axil, pe- and rounded to auriculate as in D. oerstedii. In adduncle<br />
7.5-12 cm x 4 x 7 mm, medium ;reen, dition, D. burgeri has more primary lateral veins,<br />
moderately glossy (sap with a faint, unusual scent), numbering (13)18 to 28 per side (vs. (4)6 to 9(11)<br />
spathe 11.5-15(21) cm long at anthesis, 1.1-1.9 cm per side in D. oerstedii).<br />
longer than the spadix, glossy to semiglossy on both Burger & Liesner 7254 describes the spathe at<br />
surfaces, flattening 2.7-3 cm diam. at constriction, anthesis as having a strong unpleasant aroma.<br />
dark green outside throughout, slightly paler inside, Etymology. The species is named in honor of<br />
spathe blade < 2 cm diam. when furled, spathe William Burger of the Field Museum of Natural<br />
tube to 10 cm long, 1.5-2.0 cm diam., flattening History, long-time expert on Costa Rican plants,<br />
3.7-7 cm wide, spathe blade 2.7-3.7 cm diam. at who ma(3e the first collection of the spec ies as well<br />
anthesis, .a(lix 9-15.6 cm long at anthesis, free as most of the earliest (olle(tions during his exportion<br />
44.7 ( m long; pistillate portion 5-6 t m peditions t() Costa Ri(a.<br />
long, the fertile staminate portion 4-6.5 cm long,<br />
5-6 mm diam., directed slightly forward out of the<br />
spathe, sterile intermediate segment 1.5-3 ( m long,<br />
Par(lty/)es. (:()S'I'A R1(:A. Puntarenas: Palmar, Sur-<br />
(:ha(arita krll 287, (a. 3 km NX of Cha(arita, (rrayllnt et.<br />
l. 7547 (INf3, MO); Refugio Na(. Gc)lfito, Fila Gamba,<br />
5 mm diam., with many staminodia near base and<br />
few just below fertile staminate portion, pistils 21<br />
to 37, moderately closely spaced, almost (ontiguous,<br />
to 3 dispersed across spadix width, weakly<br />
Rio (Carlaza (trainage, Grayllnt & G. Herrera 9236 (CR,<br />
MO); Fila Barriganes, ca. I km %, 3 km W of Canasas,<br />
Croat & Grflyunt 59814 (COL, CR, INB, MO, PMA,<br />
QCNE, SCZ, TEFH, US); Piedras Blancas Rinc6n 3.7 mi.<br />
W of Pan-Am Hwy., Croat 67692 (MO); Chacarita-Rincon<br />
constricted below middle, green to pale yellow, de Osa, ca. 6 km W Chacarita, Croat & Grayunz 59731<br />
stigmas pale yellow, 1-1.5 mm on drying, stami- (CR, MO); Rincon de Osas ridge letw. Quebrada Aparicio-<br />
Quebrada Aguabuena, Grayunz et al. 4014 (CR, MO); W<br />
nodia about as long as or slightly longer than pis- of Rincon de Osa, Croat & Grayunz 59851 (MO); Par. Nac.<br />
tils, somewhat flattened and thickly swollen, sub- Sector Esquinas, YiC. of Fila Gamba hills behind Esquinas<br />
globular and somewhat truncate at apex synandria Rain Forest Lodge, along Quebrada Negra, at end of side<br />
drying irregularly somewhat rounded, the margins rd. off of Villa Bricena to Golfito Rd., Croat & D. Hannon<br />
79286 (CM, INB, MO); San Jose, along rd. to San Isidro<br />
usually irregularly turned upward, 1-1.4 mm diam.<br />
del General, Burger et al. 10671 (F, MO); Golfito, Queat<br />
apex, orange to yellow-orange, green, narrowly brada Negra, Marten 848 (F); Osa, ca. 5 km W of Rincon<br />
an;led on one side. INFRUCTESCENCE with de Osa, Burger & Gentry Jr. 8898 (CR, F); near the airfield<br />
spathe usually orange, fruiting spadix 5-7 cm long, ca. 4 mi. W of Rincon de Osa, Burger & Stolze 5489 (F);<br />
ca. 3 cm wide, berries orange-red to red-orange dry-<br />
W of airstrip, Utley & Utley 1100 (CR, F). San Jose:<br />
Perez Zeledon Cant6n, San Isidro General-Dominical, Fila<br />
ing pale yellow-brown, ovoid, 7-8 mm lon;, seeds Tinamastes, Croat & D. Hannon 79112 (INB, MO, QCNE,<br />
drying blackened, minutely warty.<br />
USM); San Isidro del General-Dominical, above Alfombra,<br />
Burger & Baker 10121 (F, MO).<br />
Distribution and habitat. Dieffenbachia burgeri<br />
is endemic to southwestern Costa Rica on the Pa- 4. Dieffenbachia concinna Croat & Grayum, Nocific<br />
slope from Dominical to the Osa Peninsula, von 9: 492. 1999. TYPE: Costa Rica. Puntarsea<br />
level to 500 m, rarely 1(300 m elevation, in enas: Palmar Norte-Panamanian border, 3 km<br />
Tropical wet forest (T-wf) Premontane wet forest (P- N of jet. to Rinc6n, 8°48'39"N, 83°16'18"W,<br />
wf), and sometimes in Premontane rain forest (P-rf) 110 m, 10 Sep. 1996, 1: B. Croat & D. Hannon<br />
695
696 Annals of the<br />
Missouri Botanical Garden<br />
79191 (holotype, MO-5170498!; isotypes, peduncle (2.5)8-17.5 cm long (averaging 10.5 cm<br />
AAU!, B!, CAS!, COL!, CR!, DUKE!, F!, GH!, long), somewhat compressed dorsiventrally in cross<br />
HUA!, INB!, K!, M!, MEXU!, NY!, PMA!, US!). section, 3-4 mm wide on drying; spathe 11-25.7<br />
Figures 5, 28A.<br />
cm long, 1.5-2.0 cm wide when furled (as long as<br />
or up to 2 times longer than peduncle and aver-<br />
Small, erect herb, 0.6-1.3 m tall, sap milky; in- aging 1.6 times longer), constricted 4.5 cm above<br />
ternodes glossy, 1.5-4(7.5) cm long, 1-4 cm diam., base, the constricted area 1.8-3 cm wide when flatmedium<br />
green to dark green, obscurely marbled tened, medium to pale green outside, somewhat<br />
light to medium green. LEAVES erect-arching, pet- darker on tube except white on open face, uniformioles<br />
7.5-25(35) cm long (averaging 17 cm long), ly paler within, drying dark brown to blackened<br />
terete and obtusely sulcate near apex or subterete throughout; spathe blade 3.3 cm wide when flatto<br />
C-shaped or D-shaped in cross section, flat to tened; spathe tube 4.5-8.5 c m wide when flattened,<br />
shallowly sulcate adaxially (the margins obtuse to paler inside; spadix protruding forward at anthesis,<br />
acute), rounde( or sometimes acute abaxially, mod- 12-14 cm long; free portion 6.5-9.5 cm long; piserately<br />
erec t, semiglossy or almost matte, dark tillate portion tapered towal(l apex, 4.5-9 cm x 5-<br />
green to olive-green, blotched striate or streaked 12 mm, stipe and axis pale green, fertile staminate<br />
white or silver-green, drying green to sometimes portion white, tapered slighlly toward both ends, 8-<br />
light yellow-br(wn, sheathing from lower 2/5 to near- 9 cm long, 7-10 mm diam. midway; sterile stamily<br />
throughout (averaging 0.63 of length); sheath nate portion 2.5-4 cm long; mostly sterile inter-<br />
6.7-13(20) cm long (averaging 9.5 cm), to 1.5 cm mediate segment 5-7 mm diam., mostly bare but<br />
diam., margins erect to involute, the tip asylnmet- with a scattering of staminodia on both ends (esrically<br />
auriculate to rounded and free-ending, with pecially at base); pistils 42 lo 65, closely spaced;<br />
one side obtuse to rounded, with the other side ovary globose, 1-2.5 mm diam., pale green; stigma<br />
acute to obtuse; unsheathed portion 1-13 cm long, pale yellow; staminodia 1-5 mm long, up to 3 times<br />
to 1.5 cm (liall.; blades usually + elliptic, ovate- longer than pistil, somewhal llattened toward base<br />
elliptic, rarely ovate or broadly lanceolatee 16-36 and free at base, tapering and somewhat globular,<br />
cm long (averagirlg 23 cm long), (7.8)10-] 5.5(20.5) 1-2 mm diam. at apex; svllandria with flowers ircm<br />
wide (averaging 12 cm wide),1.5-2.9 times lon- regularly rounded, 0.t
Volume 91, Number 4<br />
2004<br />
Croat<br />
Revision of Dieffenbachia<br />
D G<br />
Figure 5. Dieffenbachia concinna. A-E, G. (Croat 78318). F. (Croat 67594). A. Close-up of adaxial surface of<br />
blade. B. Crown of plant with inflorescences, one open. C. Close-up of stem and petiole bases showing variegations.<br />
D. Close-up of opened inflorescence exposing entire spadix. E. Close-up of inflorescence with portion of spadix<br />
showing elongated staminodia overtopping pistils. F. Close-up of spathe showing emerging threads of pollen filling<br />
spathe. G. Close-up of male portion of spadix showing androecia with anthers exposed.<br />
697
698 Annals of the<br />
Missouri Botanical Garden<br />
size (to 1.3 m vs. 0.75-1 m in D. oerstedii), and Raven 21532 (F), Rinc6n de Osa, Quebrada Apariciomore<br />
coriaceous blades typically broadest at the<br />
Quebrada Aguabuena, Gray7lm et al 3982 (CR, MO), vic<br />
of Boscosa, at Quebrada Aguabuena, Croat & D. Hannon<br />
middle (vs. broadest below the middle in D. oerste- 79238 (COL, INB, MO, NY, PMA, TEFH, TEX, UB), Secdii)<br />
with more numerous primary lateral veins (6 to tor Esquinas, vic. of Fila Gamba hills behind Esquinas<br />
12(14) vs. mostly 6 to 9 for D. oerstedii). In addi- Rain Forest Lodge, along Quebrada Negra, at end of side<br />
tion, the blades of D. concinna are glossy above rd. off of Villa Bricena to Golfito Rd., Croat & D. Hannon<br />
79291 (CM, DUKE, INB, MO, P), Refugio Nac. Golfito, S<br />
and almost rounded at the base versus weakly tributary of Rio Canaza, Grayum et al. 9250 (MO), W side<br />
glossy to matte and subcordate in D. oerseedti. Fila Gamba, ca. 6 km from Golfito airport, Croat & Gra-<br />
Grayum et al. 10588, from the headwaters of the yalm 59930 (CM, K, MO), Rfo Claro, 2.5 mi. SE of Golfito,<br />
Rio Piedras Blancas in Puntarenas Province, is un- Croat 67594 (MO), Orotina-Jaco, valley of Rio Grande<br />
usual not only in occurring much higher (to 900 m)<br />
Tarcoles, 1 km S of Quebrada Ganado, vic. Hotel Pink<br />
Paradise, Croat 79076 (INB, MO), Par. Nac. Corcovado<br />
than most collections of this species but in having Alonkey Woods, Kernan & Phillips 831 (CR, MO), Lower<br />
a broader leaf (to 19 cm wide) with a longer petiole Lookout Trail, Kernan 748 (CR, MO); Est. Sirena, Que-<br />
(to 30 cm). In other respects it agrees with other sada 51 (INB, MO, US, CR), Penfnsula de Osa, Estacion<br />
collections of D. concinna. Hammel 9660, collected Biologica Los Patos, 8o34'N, 83o31'W, 200 m, 2 Sep.<br />
1993, R. Aguilar 2195 (CR, INB, MO); 0-1 km W of park<br />
at La Selva in Heredia Province in Cesta Rica, headquarters at Sirena, Liesner 2871 (CR, MO), Pan-Am<br />
probably represents a hybrid between D. beachiana E4wy.! Rinc6n, Croat & D. Hannon 79167 (MO), Rinc6nand<br />
D. concinna. The specimen has the slightly Rancho Quemado, just S of Rincon near Rio Rinc6n,<br />
scabrous petioles and the impressed major veins of Croat & D. Hannon 79170 (HUA, INB, MEXU, MO,<br />
D. beachiana, but the blades are more or less el-<br />
QCA, RSA, WU), vic Palmar Norte, Allen 5669A (F, UC),<br />
Punta Banco, M. Cha1a(lrrfa et al 257 (CR); Coto Brus,<br />
liptic and dry more the color of D. concinna. Croat Guaymi Reserve, river trail along Rio Lim6ncito near jct.<br />
& Hannon 79199, collected south of Palmar Norte, Of Villa Palacios school trail, Koshear 59 (CR), Golfito,<br />
appears to be a hybrid between D aurantiaca and Refugio de Vida Silvestre, Marten 789 (CR), Carr. Inter-<br />
D. concinna. Its blade shape and maculations, and am.-Sinai, Fila Huac.as! (a. 4 km NE (3Dy road) at Las<br />
Huacas (;'Venecia"), (;relum & Evans 10156 (CR, MO);<br />
numerous inflorescences suggest l). concinna, while Palmar Norte-3alisco, (Juebrada Benjamin, Graymm et al.<br />
the broadly sulcate petiole favors D. aurantiaca. 9962 (CR, MO). San Jose: above Palmar Norte, Croat<br />
35708 (MO). NICARA(tUA. Rio San Juan: Res. in{lio-<br />
Additional specimens examined. COSTA RICA. He- Mafz, Cano el Tambor t)ranch of Rio San Juan, Rueda et<br />
redia: near Puerto Viejo along rd. near Rfo Sucio, Croat al. 4070 (MO). PA N A MA. Panama: rd. to Puerto<br />
35688 (MO), Croat 35702 (MO); Finca La Selva, OTS 3imenez, Osa, 40 km W of Panam. Hwy., rt. 2, L. Gomez<br />
Field Station on the Rfo Puerto Viejo just E of its junction 19531 (MO).<br />
with the Rfo Sarapiquf, Hammel 9688 (DUKE), Croat Cultivated collections. Costa Rica. Puntarenas: Esqui-<br />
78732 (INB, MO, W). Limon: La Colombiana Farm, Unit- nas, 25 km SE of Palmar Sur, along Pan-Am Hwy., origed<br />
Fruit Co., Standley 36739 (US); headwaters of Quebra- inally collected by Bru( e. McAlpin (Selby 85-33), 25 m,<br />
da Mata de Limon, Finca Anai (Sixaola region), Grayum 2 Jan. 1994, cultivate(l at MBG, vouchered as Croal<br />
et al. 4447 (MO); Cerro Tortuguero junto a la Barra de 77281 (MO); 15 May 1996, Croal 78318 (MO).<br />
Tortuguero, R. Robles 2090 (CR, INB, MO), Barringer et<br />
al. 1973 (F); Par. Nac. Tortuguero, Go'mez-Laurito 7856 5. Dieffenbachia copensis Croat, sp. nov. TYPE:<br />
(CR); Boca de las Lagunas de Tortuguero, Burger & An-<br />
Panama. Cocle: E1 Cope, forest on Continental<br />
tonio 11249 (F, MO); Pococi, Refugio de Vida Silvestre<br />
Barra del Colorado, SE base Of Cerro del Tortuguero, Gra- Divide above El Cope, 8°38'NX 80°38'W, 700yum<br />
et al. 11139 (CM, CR, INX, MO, USJ), Rfo Chirri- 900 m, 27-29 Apr. 1985 B. Hantmel 13636<br />
p6cito-Rfo Sardina, Refugio Nac. Barra del Colorado, Gra- (holotype, M0-3284876!). Figures 6, 27B.<br />
yum 9777 (CR, MO); Rio Reventaz6n, Finca Montecristo<br />
below Cairo, Standley & Valerio 48960 (US). Puntaren- Herba 45 cm alta; internodia 7 mm longa, 7 mm diam.,<br />
as: McAlpin 85-33 (SEL); 2 km NW of Chacarita, 30 km petiolus (17)21-29.5 cm longus, vagina S12.5 cm longa;<br />
S of Palmar Sur, Grayum & Fleming 8119 (CR, INB, MO); pars libera 10.5-15.5 cm longa, lamina anguste oblanceoridge<br />
betw. Rio Riyito (valley of Laguna Chocuaco) & lata, 25.5-33.3 cm longa, 5.2 cm lata, nervis primariis<br />
Quebrada Banegas, S of Cerro Rancho Quemado, Grayum lateralibus 9-12 utroque, inflorescenlia 1 per asillam, peet<br />
al. 7567 (MO); Rinc6n de Osa Rancho Quemado, ca. dunculus 5 cm longus, spatha 15.7 cm longa, 1.2 cm lala;<br />
10 km W of main Rincdn-Pto. Jimenez Rd., Croat & Gra- spadix 12.3 cm longus.<br />
yum 59785 (CR, MO); Osa, 6 km W of Rinc6n, Grant &<br />
Rundell 92-01928 (CR, MO, US); near the airfield ca. 4<br />
Small herb, to 45 cm tall; internodes about as<br />
mi. W of Rinc6n de Osa, Burger & Stolze 5461 (CR, F), long as broad, 7 mm diam., drying matte, dark<br />
Osa Penfnsula, NW of airfield, ca. 5 km W Of Rinc6n de brown, finely and irregularly folded; petioles<br />
Osa, Burger & Liesner 7196 (CR, F, MO, PMA); Osa Pen- (17)21-29.5 cm long, sheathed 41Wo-56Wo their<br />
insula, Nicolson 3393 (BM, US); Costena-Cruces, Rfo Pie- length, sheath 8-12.5 cm long, narrowly acute at<br />
dras Blancas, Cerro Anguciana, Grayum et al. 10588<br />
(INB, MO, CR); Rio Sandalo, Dodge 10198 (F, MO), apex, drying dark brown to medium yellow-brown;<br />
Dodge 10020 (F, MO); Palmar Norle de Osa, Allen 5669 free portion 10.5-15.5 cm long, subterete, obtusely<br />
(EAP, UC, US); Osa Peninsula, 4 mi. W of Rincon de Osa,<br />
sulcate, drying medium yellow-brown to dark
Volume 91, Number 4<br />
2004<br />
f i<br />
Figure 6. Dieffienbachia copensis (Hammel 13636). Type specimen.<br />
J<br />
Croat<br />
Revision of Dieffenbachia<br />
l<br />
E<br />
j t. F<br />
, *<br />
-/<br />
Ar 3C e3 e<br />
D i ef f snbach 1 a copense CfOtt<br />
MISSOURI<br />
699<br />
BOTANICAL GARDEN<br />
HERBARIUM<br />
N° 3284876<br />
PANAMA *ts2Fi.:-: @s :;<br />
t'S? s':k-'sX<br />
Prov . COCL E:<br />
El Copa. Forest<br />
above town.<br />
on continental dvd<br />
8v-38tNJ 80--38tW.<br />
700-9OO rn<br />
Terrestr 1 al<br />
On slope In frstZ Lvs wavy con mrSn drk<br />
green aboveJ pale secondery velns<br />
X mpre s se d abov e.<br />
hpr/ 27-29/ t 985<br />
B. Hammel t 3636<br />
M I SSOUR | BOTAN I CAL GARDEN FIERBAR I UM ( MO }
700<br />
Annals of the<br />
Missouri Botanical Garden<br />
brown, minutely granular to somewhat scabridu- free section to 1.1 cm long in D. copensis). Dieffenlous;<br />
blades narrowly oblanceolate, 25.5-33.3 cm bachia galdamesiae differs in having blades prolong,<br />
5.2 cm wide, 6.4 times longer than wide, nar- portionately broader, 2.7-4.2 times longer than<br />
rowly long-acuminate at apex, narrowly attenuate at wide, versus 6.4 times longer than wide in D. cobase,<br />
dark green and matte above, moderately paler<br />
and semiglossy below, drying dark gray-green and<br />
penszs.<br />
minutely granular above, light yellowish gray be- 6. Dieffenbachia crebripistillata Croat, sp. nov.<br />
low; midrib concolorous and narrowly raised above, TYPE: Panama. Cocle: Alto Calvario, above E1<br />
eonvex and granular-puberulent to hispidulous and Cope, ca. 6 km N of E1 Cope, Atlantic slope<br />
slightly darker below; primary lateral veins 9 to 12 along trail which leads down to Las Ricas, Lipairs,<br />
arising at an acute angle then spreading at mon 8 San Juan, 8°39'S, 80°3C'GT, 710-800<br />
45°-50° angle, plominently curved upward along m, 22 June 1988, YS B. Croat 68746 (holotype,<br />
the margins ancl extending to above the origin of MO-3610884!; isotypes, B!, (2AS!, COL!,<br />
the next higher veins, paler and weakly sunken DUIkE!, F!, GH!, HUA!, INB!, K!, M!, MEXU!,<br />
above, convex an(l slightly darker below, drying SY!, PMA!, US!). Figures 7, 27A.<br />
narrowly raise(l and granular; minor lateral veins<br />
weakly visible; c ross-veins equally visible on lower Planta 30-100(120) cm alta; interno(libl 2.5-4 cm longa,<br />
1.5-3(5) cm diam.; petiolus 7.5-24 ( lls longus; lamina<br />
surface; lower surt:ace moderately granular. INFL0ovata<br />
vel raro elliptica vel oblongo-elliptica, (22)27-<br />
RESCENCE sol i lary, longer than the petioles; pe- 46(55) cm longa, 10-25 (m lata, nelvis primariis lateralduncles<br />
5 cm long (Irying 2.5 mm diam., pale yel- ilous (10)15-17 utroque; inllorescentis 1-2 per axillam;<br />
low-brown; sp(lth() 1 5.T cm long, 1.2 cm diam., pale peedunculus (8.5)10-14 cm longus; sl)alls{l 13-28 cm longreen,<br />
clrying me(liurrl yellow-brown, narrowly long- ga, 2.0-3.2 cm lata; spadix 13-26.5 ( lls losgus; parte pistillata<br />
6-10(12) cm longa, 8-12 mm lll.<br />
acuminate at tlle tal)ex (acumen 1.7 cm long); spadix<br />
12.3 cm long; fle e portion 8.5 cm long; pistillate Short, thick-stemme(l herb, 3()-1()()(120) cm tall;<br />
portion S cm lollg. 4-S mm diam.; staminate portion sap foul-smelling, eventually tulnilltg white; inter-<br />
5.5 cm long, z1 lllrll cliam., drying yellow-brown; nodes clark green, glossy, 2.5-4 ( lll long, 1.5-3(5)<br />
mostly nake(1; illte.rmediate sterile portion 1.1 cm (m diam.; petio1Kes 7..S-24 cm long (averaging 16<br />
long, 2.S mm (lialll. on drying, with only a few sta- e m long), somewhat s)ongy, soli(l (ltark green or<br />
minodia scattere(t throughout its length; pistils 38, -with a white band on the abaxial surface, conspic-<br />
2 to 3 situated across the width of the spadix; ovary uously sheathed ranging from 0.7 to fully through-<br />
0.5-6.0 mm (liarll.; stigmas about as broad as the out the length (but rarely ending mole than 1 cm<br />
ovary; stamino(lia 2 to 4 per pistil, 1-1.4 mm long, lrelow the blade and often extending beyond the<br />
slightly thickene(t toward the apex, not at all broad- l)ase of the blade); sheath to 1.5 cm high, 7.5-19.5<br />
ened toward the l)ase; the sterile male flowers in 2 em long, inequilaterally rounde(l to auriculate at<br />
rows, somewhal separated from the fertile flowers; apex; unsheathed portion usually not apparent but<br />
synandria 2.2-2.tA mm long, 1.6-2.0 mm wide, ir- when present 1-7 cm long (averagmg 1.6 cm long),<br />
regularly rounded to rhombic at apex. INFRUC- t)roadly sulcate, the margins shalp; blades ovate to<br />
TESCENCE not seen.<br />
larely elliptic or oblong-elliptic, (22)27-46(55) cm<br />
long, 10-25 cm wide (averaging 37 x 18 cm), 1.5-<br />
Distribution (I nd habitat. Dieffenbachia copen- 3.3 times longer than wide (avelaging 1.9 times<br />
sis is known only from the type specimen in the longer), 1.9-3.7 times longer than petioles (aver-<br />
Cocle Province of Panama at 700 to 900 m in the aging 2.3 times longer than petiole)* somewhat in-<br />
Lower montane rain forest (LM-rf) life zone (Hold- equilateral, one side up to 0.5-2.7 crll wider, modridge,<br />
1967).<br />
erately coriaceous, abruptly ac u minate and<br />
Discussion. The species is characterized by its downturned at apex, obtuse to rounde(l at base, the<br />
narrowly oblanceolate, narrowly long-acuminate basal portion of the blades held solllewhat erect;<br />
blades with densely granular primary lateral veins upper surface glossy to moderately glossy, usually<br />
and a gl anular-hispidulous midrib on the lower sur- solid dark green sometimes mottled with pale<br />
face. The species is somewhat similar to both D. green, slightly bicolorous; lower surface glossy, palgaldamesiae<br />
and D. fortunensis, differing from both er; midrib flat-raised to flat-rounded and paler esin<br />
having proportionately narrower blades that are pecially near base, 12-20 mm wide, becoming obbroader<br />
well above the middle. In contrast, the tusely convex toward apex and diminishing before<br />
blades of D. fortunensis are broadest well below the reaching the apex above, broadly flat-rounded to<br />
middle and have the pistillate and staminate por- narrowly rounded and pale green to white below<br />
tions of the spadix contiguous or nearly so (vs. a (especially near the base); primary lateral veins
Volume 91, Number 4<br />
2004<br />
Croat<br />
Revision of Dieffenbachia<br />
Figure T. Dieffenbachia crebripistillata (Croat 75172). A. Potted plant with open inflorescence (Croat 75172).<br />
B. Close-up of crown of plant with open inflorescence. C. Close-up of inflorescence with pollen emerging from<br />
androecia (Croat 49243). D. Close-up of inflorescence with tube flared out and spathe blade recurved. E. Closeup<br />
of inflorescence showing pistillate portion, intermediate sterile section, and lower section of staminate portion.<br />
701
702<br />
Annals of the<br />
Missouri Botanical Garden<br />
(10)15 to 17 per side, sunken to weakly sunken been made during the late rainy season (Augustabove,<br />
raised below; interprimary veins obscure December).<br />
above, obscurely visible below; minor veins mod- Discussion. This species is related to D. Ionerately<br />
distinct on lower surface. INFLORES- gispatha, which differs in being a much more ro-<br />
CENCES 1 to 2 per axil; peduncle (8.5)10-14 cm bust and taller plant (to 3.5 m), having petioles that<br />
long, flattened laterally, pale green; spathe 13-28 dry green and with a long unsheathed portion, and<br />
cm long, 1.3-1.5 times longer than peduncle, pale pistils that are much larger (to 7 mm diam.), many<br />
to medium green outside (sometimes white at an- fewer in number (only to 26), and widely spaced.<br />
thesis), paler within, unmarked, + oblong, acumi- See that species for additional discussion of the<br />
nate at apex, only weakly constricted midway (con- differences. Though D. crebripistillata usually has<br />
stricted area to 3.2 cm wide when flattened); spathe solid green blades, some plants from Cocle (at La<br />
tube 1.5-3 cm wide when furled, 8-8.5 cm wide Mesa near E1 Valle de Ant6n and along the Conwhen<br />
flattened; spathe blade to 2.0-3.2 cm wide tinental Divide north of Llano Grande) have palewhen<br />
furled; spadix 13-26.5 cm long (averaging 18 maculate leaves. Typically the petiole of Dieffencm<br />
long), the free portion 8.5-11 cm long; pistillate bachia crebripistillata is fully sheathed; however,<br />
portion 6-10(12) cm long, 8-12 mm wide; fertile some plants from the Cerro Jefe region (Croat<br />
staminate portion 5-9 cm long, 6-10 mm diam.; 35915, Croat & Zhu 76644, and Dwyer 9497) or<br />
the mostly sterile intermediate portion (1)1.5-2.5 the Rio Guanche region (D¢Arcy 9678 and Croat<br />
cm long, with some sterile male flowers in the up- 11420) rarely have a significallt free portion of the<br />
per 1/3; pistils (57)80 to 100, scattered, frequently petiole 3-5(7) cm long.<br />
adjacent, up to 5 in a row across the width of the Collections from lowland (:ol6n (Croat 75172,<br />
spadix, never more than 5 mm apart; stigmas pale D'Arcy 9678) are somewhat illtermediate between<br />
orange, densely pul)escent; staminodia white, + ob- D. Iongispatha and the mole tv,nical D. crebripistillong,<br />
ca. 2-3 mnl long, rounded at apex; synandria lata from the highlands of l'tlllama. The petioles<br />
irregularly rounde(l at apex, smooth or weakly dim- are not as fully sheathed, witll the free portion of<br />
pled medially, to 2.6-2.8 mm diam.; pollen exsert- the petiole ranging from 4 to 5 cm long in these<br />
ed in slender c realll-colored threads to 3 mlll long. specimens.<br />
INFRUCTESCEN(LIdS with berries ovoid to sul)el- Most collections from E1 (ol)e in Cocle Province<br />
lipsoid, orange to })right red, 8-11 mm long. have fully sheathed petioles all(l leaf blades proportionately<br />
smaller and nallower, averaging only<br />
Distribution sled habitat. Dieffenbachia crebri- 25 cm long (vs. an average of .-37 cm for all other<br />
pistillata is endemie to central and eastern Panama populations of the species) all(l 2.5 times longer<br />
at (100)250-800(975) m, in Tropical wet forest (T- than wide (vs. an average of 1.9 times longer) with<br />
wf), Preniontane wet forest (P-wf), and Premontane petioles averaging only 11..5 ( lll longer (vs. an avrain<br />
forest (P-li) life zones (Holdridge, 1967) in Co- erage of 16 cm for other po^)ulations). These colcle,<br />
Col6n, Panama, and San Blas Provinces. While lections (Antonio 3039; (vroat 44558, 44682,<br />
the species mostly occurs in a few areas of mod- 49155, 67576; Croat & Zhll 76757; FolsonI 1265,<br />
erately high elevations (including Santa Rita Ridge, 3211, 6218; and Sytsrna & An(lersson 4573) differ<br />
Cerro Bruja, Cerro Jefe, Cerro Campana, and La in having smaller elliptic bla(les. The E1 Cope re-<br />
Mesa), it dips down to as little as 100 m along the gion is well known for having tllany ende-mics, and<br />
Colon Province coast in the area of Rio Guanche these plants may represent differences that may uland<br />
Portobelo. Most of these collections differ in timately prove to be important, but for now are behaving<br />
petioles that dry less orange and have the ing considered as D. crebripistillata. One collection<br />
petiole sheath ending somewhat below the blade, from E1 Cope in Cocle Province (Croat 74861) difnever<br />
overtopping the blades. As mentioned else- fers from the above only in having the petiole free<br />
where under D. nitidipetiolata (and below) these above the sheath for a distance of 4.5 cm.<br />
collections may represent hybrids with either D. ni- Etyrnology. The specific epithet is derived from<br />
tidipetiolata or D. Iongispatha.<br />
"creber" (meaning crowded together) and "pistilla"<br />
Phenology. Dieffenbachia crebripistillata flow- (pistils) and refers to the very closely aggregated<br />
ers principally at the end of the dry season (April) pistils on this species in contrast to the widely sepand<br />
in the early part of the rainy season from May arated pistils of D. Iongispatha with which the speto<br />
July, less commonly during the balance of the cies had long been confused.<br />
dry season (January-March) and in the latter part<br />
of the rainy season (August-October). Fruiting time<br />
is poorly known, but most fruiting collections have<br />
Paratypes. PANAMA. Cocle: N of E1 Valle, Cerro<br />
Gaital, Knapp 5758 (MO); E1 Valle de Anton Region, at<br />
La Mesa, 3.2-6 mi. above E1 Valle, Luteyn & Kennedy
Volume 91, Number 4<br />
2004<br />
Croat<br />
Revision of Dieffenbachia<br />
1612 (DUKE), FLORPAN, Guerra et al. 5252 (PMA), Lgewis<br />
et al. 1753 (M0), Allen & Alston 1839 (M0); La Mesa,<br />
Finca Mandarinas, along rd. to Finca Furlong, Croat<br />
67115 (AAU, B, CAS, JAUM, M, M0, P, PMA, TEFH,<br />
19 Nov. 1984, M. H. Grayu7n G. Herrera, A.<br />
Matute & E Chavarr^'a 4483 (holotype, M0-<br />
3229671!; isotype, INS!). Figures 8, 278.<br />
VEN), 1 km E of Finca Macarenita, Croat 7478 (M0);<br />
Divide SW of La Mesa, Stein & Hamilton 990 (M0); La<br />
Mesa, above E1 Valle de Antbn, ca. 2 km W of Cerro<br />
Pilon, Croat 37361 (F, M0); above E1 Valle on rd. to Cerro<br />
Pilon, Croat 25352 (M0); 2 km W of Cerro Pilon, Sullivan<br />
537 (M0); 3 km N of E1 Valle de Anton, Wilbur et al.<br />
15664 (DUKE); above E1 Valle, Croat 13403 (M0); La<br />
Pintada-Coclecito, 5.3 mi. N of stream at Llano Grande,<br />
Atlantic slope, Croat 49243 (HUA, MEXU, M0, PMA,<br />
SEL, VEN); rd. to Coclesito, 12 mi. from Llano Grande,<br />
Herba 30-100 cm alta; internodia (1.0)1.5-5 cm longa,<br />
1.5-1.9 cm diam.; petiolus 3-11.5 cm longus, 5-6 mm<br />
diam., vaginatus 0.4-0.97 longitudinis, pars libera subteres<br />
vel D-formata, (1.5)2-5.5 cm longa; lamina oblongoelliptica,<br />
9-26.8 cm longa, 2.3-9 cm lata, nervis primariis<br />
lateralibus (6)9-15 utroque; inflorescentia 3 per axillam;<br />
pedunculus 1.5 I cm longus; spatha W16 cm longa; spadix<br />
(7.5)10-12.5 cm longus; baccae 8-11 diam.; semina<br />
2-3.<br />
Churchill et al. 3993 (MO); past Llano Grande on rd. to<br />
Cascajal, Sytsma et al. 4398 (M0); Llano Grande-Cas- Slender herb, 30-100 cm tall; sap clear; intercajal,<br />
Hammel 7212 (M0); vic. Alto Calvario, 7 km N of nodes (1.0)1.5-5 cm long, 1.5-1.9 cm diam., weak-<br />
E1 Cope, Folsom 3211 (MO), Folsom 6218 (M0), Folsom ly glossy to semiglossy, minutely roughened, usu-<br />
1265 (M0), Ant6nio 3039 (M0); above E1 Potroso sawmill,<br />
Cont. Divide, N of E1 Cope, Sytsma & Andersson 4573<br />
ally with an even mixture of medium yellow-green<br />
(M0); 9.4 km above E1 Cope, Croat 44682 (MO), Croat and black-green streaks with no obvious back-<br />
44558 (M0); Alto Calvario, ca. 4.6 mi. above E1 Cope, ground color, sometimes medium yellow-green to-<br />
Croat 74861 (M0); Alto Calvario, 5.5 mi. N of E1 Cope, ward base with black-green streaks, reversing to<br />
3.5 mi. N of Escuela Barrigon, Croat 67576 (MO, PMA),<br />
dark black-green with yellow-green streaks toward<br />
Croat & Zhu 76757 (HUA, INB, K, M0, PMA, TEX),<br />
Croat 49155 (M0, RSA, SCZ); Rio Indio, on rd. from Por- the apex, drying obviously minutely wrinkled, stritobelo<br />
to Nombre de Dios, Croat 33568 (M0). Colon: ca. ate and matte. LEAVES spreading-pendent to pen-<br />
5 mi. SMt of Portobelo, Croat 14175 (M0, PMA); 2 mi. S dent; petioles 3-11.5 cm long (averaging 6.5 cm<br />
of Portobelo, Croat 11420 (M0); S approach of Cerro Bru- long), 5-6 mm diam., arched-spreading from stem,<br />
ja from Rio Escandaloso, Hammel 3140 (M0); 9-12 mi.<br />
E of Trans-Isthmian Hwy. on Santa Rita ridge, Thompson<br />
sheathed from 0.4 to 0.97 (averaging 0.73) the<br />
4874 (CM, K, M0); Santa Rita Ridge, 26 km from Trans- length of the petiole, paler than stem, white to yel-<br />
Isthmian Hwy., Knapp et 1ll. 1717 (M0); Rfo Gatun, Por- lowish green speckled, especially near the base, the<br />
tobelo, Antonic) 3820 (M0); Rio Guanche, (a. 3-5 mi. base often white, tinged with pink and dark-striate;<br />
above bridge inland, Croat 26193 (M0), D'Arcy 9678 sheaths auriculate-prolonged at apex (often appear-<br />
(M0); (a. 3-5 km above briclge, Croat 36958 (M0); ta.<br />
3-5 nli. inland, Croat 26239 (M0); tSabanitas-Portobelo, ing + acute on dried specimens), the margins in-<br />
Rfo Piedras Lumber Rd, 6.T mi. E of Sabanitas, 3.9 mi. rolled on both sides throughout their length, the<br />
up logging rd., Croat 75172 (M0). Panama: Par. Nac. opposite sides usually in contact and sometimes in<br />
Altos de Campana, Buena Vista, Chame, FLORPAN, Es- part overlapping; unsheathed portion (1.5)2-5.5 cm<br />
pinosa et al. 4723 (M0, STRI), Espinosa & E. Martz'nez<br />
3308 (PMA); Sendero del Tigre, Correa & Montenegro<br />
long, subterete to D-shaped or broadly and obtusely<br />
10419 (PMA); trail to summit, Correa & Montenegro sulcate, the margins moderately blunt; blades nar-<br />
10647 (PMA); Cerro Campana, ca. 1 mi. from Interamer- rowly to broadly oblong-elliptic, 9-26.8 cm long,<br />
ican Hwy., Croat 35951 (F, M0, MY, PMA, QCA), Croat<br />
14707 (M0); along trail to summit, Croat 17210 (M0,<br />
PMA, UB, VEN), Croat 12123 (M0), Croat 12086 (M0),<br />
Croat 14789 (M0), C. E. Smith Jr. & H. M. Smith 3389<br />
(F), Luteyn & Kennedy 1837 (DUKE), Hammel 3781<br />
(MO), Luteyn 3188 (DUKE), Croat 25213 (MO); Cerro<br />
2.3-9 cm wide (averaging 20.4 x 5.4 cm), broadest<br />
near the middle, (2)2.74.8 times longer than wide<br />
(averaging 36 times longer than wide), 1.9-6.2<br />
times longer than petiole (averaging 3.1 times longer<br />
than petiole), slightly inequilateral, one side 3-<br />
Campana, 8.6 mi. SW of Capira, Luteyn 1010 (DUKE);<br />
6.1 mi. above Pan-American Hwy., Croat 74760 (M0); 5-<br />
10 km NE of Altos de Pacora, Mori & Kallunki 6026<br />
(M0); rd. past Altos de Pacora, 3-3.5 mi. NE of Altos de<br />
Pacora, T.8-8.2 mi. above Pan-Am Hwy., Croat 68699<br />
(M0); 0.8 mi. beyond turn-off to Altos de Pacora, Croat<br />
& Zhu 76644 (MO); 4.6 km beyond peak on rd. to Altos<br />
de Pacora, 26.3 km from Interamerican Hwy., Croat 35915<br />
(M0); Cerro Jefe, Dwyer & Gentry 9479 (DUKE, M0).<br />
9 mm wider than the other, sometimes weakly falcate,<br />
thinly coriaceous, gradually to abruptly longacuminate<br />
at apex (acumen down-turned and apiculate),<br />
acute to rounded or cordulate and nearly<br />
equilateral or markedly inequilateral at base (one<br />
side sometimes also ending lower on the midrib);<br />
margins sometimes undulate; upper surface plain<br />
dark green in Costa RicaX sometimes variegated<br />
with irregular light green blotches in Panama pop-<br />
7. Dieffenbachia davidsei Croat & Grayum, sp. ulations, glossy to semiglossy; lower surface slightly<br />
nov. TYPE: Costa Rica. Limon: headwaters of paler, matte to weakly glossy; drying dark brown to<br />
Quebrada Mata de Limon, central fork & hills dark gray-brown above, yellow-brown to yellowbetw.<br />
central & westernmost forks, Finca Anai green below; rnidrib flat at base, becoming weakly<br />
(Sixaola region), 9°35'N, 82°39'W, 25-40 m, convex toward the apex, concolorous or paler<br />
703
704<br />
r<br />
Annals of the<br />
Missouri Botanical Garden<br />
Figure 8. Dieffenbachia davidsei. A. Potted plant showing habit with several inflorescences. B. Blade adaxial<br />
surface with quilted primary lateral veins. C. Close-up of stem showing mottled petiole and stems. D. Crown of<br />
plant with cluster of inflorescences, and petiole showing free-ending sheath apex. E. Abaxial surface of leaf blade<br />
and immature inflorescence. F. Close-up of open inflorescence.
Volume 91, Number 4<br />
2004<br />
Croat<br />
Revision of Dieffenbachia<br />
clbove, convex and paler than surface below, fre- The species frequently occurs in mature forest<br />
quently pale-mottled; primary lateral veins (6)9 to along streams.<br />
15 per side, flat to sunken7 weakly quilted above, Phenology. lliefienb(zchia daridsei flowers in<br />
raised and darker than surface below, drying usu- the rainy season sometime after May (one plant<br />
ally darker than surface below, sometimes paler seen with both flower buds and seemingly mature<br />
than surface, usually departing midrib at 65°-90° infRorescences in lclte October). Mature fruits have<br />
angle throughout most of its length (rarely with the been seen during the dry season, in the late rainy<br />
veins in the distal half of the blade arising at 30°- season? and early dry season from November<br />
50°), prominently curved toward the apex in the through April. Immature fruits have been seen in<br />
outer 1/3, those near the base to as much as 120° late April indicating that flowering may begin even<br />
clngle, sometimes forming a weak sigmoid curve, earlier than May.<br />
the primary lateral veins in the upper 2/3 to 1/2 some- Discussion. The species is distinguished by its<br />
times loop-connected for some distance, forming a slender, dark, semiglossy, mottled stemsS mottled<br />
weak collective vein 2-5 mm from margin, but this petioles with a prolonged, usually acute sheath<br />
usually not extending all the way to the apex; in- apex, and more or less oblong blades with rather<br />
terprimary veins almost as prominent as primary prominent primary lateral veins that spread at nearlateral<br />
veins, flat to sunken above, weakly raised ly 90°.<br />
and darker than surface below. INFLORESCEN- Dieffenbachia davidsei is probably most closely<br />
CES usually to 3 per axil, sometimes with more related to D. obscurinervia. That species differs in<br />
than one axil producing inflorescen(es; /eduncles usucllly being cl larger plant (to 1.5 m) with plom-<br />
1.5-4 em long, 4-5 mm (tiam., ovoi(l to D-shape(l inently scurfy brown internodes, petiole sheclths<br />
in c.ross se( tion; spathe 8-16 cm long, 3.1.-4.8 which clre tyl)i(cllly only rounde(l clt the clpeX (not<br />
times longer than pedunc le, e oria( eous! semig]ossy free-en(ling), cln(l [)lclflex which hclve weclkly (leve,lon<br />
hoth sulfates, me(lium lo light gleen outsi(le, ol)e(l I)rimclly lcltelcll veins thcltcllisecltcln angle,<br />
slightly 1)a1e1 within; tuT)e olulol, lo someewhcll el- tlstlcllly cll)otlt 4.5° lo lle llli(lril).<br />
lil.)soi(l, G-7 cm long, ol)lo]g-lfll( volclle wherl All.[o|g[ l[]e [)IbOa(lly sI)Xea(linn l)l'illlal'y lcllPldl<br />
ol)ele(l, a( llle at apex (a(+lillell tIl)i( lllcilP ['01' 2 rilill); VEillE t11P 011P 0t lllP IllOSl (liSlill('liVP ('llcil('lPliSli(bE<br />
.Nvelelit (7.5)1()-12.5 e m loly,* uI) lo 1.7 em shollet 0t' 1). el(llpi(l..sei (willl llle VEill.S [lELlcllly S[)l'vtl(lillS<br />
lhan the s^)clthe; pistillate ^)oltioll (4.()).5..5-() ( m fr0nl lilP nli(lril) cit a l)lOcl(l AnglC PVEI1 to nEcil tilC<br />
long, (())tS-I() rnm wi(le (the clXiS ('a. 5 t11l11 (licllll.)t A})UX 01 tilP 1)ltl(lU), cl fEw ('OllU('tiOllE [tOtil thP ,1<br />
alrrlosl ( olltig^.lous with the stalrlill.lle l)oltioll (a I ltino-Carli ltocl(l in l'cinatila (est)e( icilly lhe I'MA<br />
wi(le stelile illtermeeticlte se(liorl lclekirg); the l)is- XllUPt 01 I(lre(le.s 94()) hcive t)rinicily lciteral veinx<br />
tillclle [IOWEI S more wi(tely St)ct( C(l llUcil tilC cl[)eXe lhat xl)tel(J cil atlgles of u^) lo 4tS°. 'lnhe lvelreele.s 94()<br />
4-6 rrlnl cll)cllt; l)istils 2()-.-J.S, ovaly glol)ose, ^)ale olle( tiol] alKso 11as t1101'e (001StVi( uouSly [)unt lEllC<br />
gleen; stiglna l)right yellow with 10llr l)l ushy l)al)il- ^)etiolex tharl (Jovs lle M() sheet of ll]C SalnC nUtIIlae,<br />
2-2.4 Illnl diam.; stamino(lia whiteX usuall.y bel. It iXs l)ossil)le that l'(lre(le.s 94() is a hyl)li(l bet)roa(lly<br />
unite(l at base an(l tolming an often nearly tween l). delviel ei al(l I). ol).scllrinel-vi(l. IXoth sI)ec<br />
onlplete bowl around the l)istil, somewhat flattene(l ('ies OC('UI in the Nusigandf area along the FJ1<br />
throughout, barely thickene(l at the a,oex, 3.4-5 mm 1,lano-Calti Road. Dieffent)(lchia ol)sezlrinervia also<br />
long; stam inate portion oblong 4-6 c m long, has c onspic uously mottled petioles, but its veins<br />
creamy white, bluntly pointed at apex; synandria arise at a much more ae ute angle. The stems of D.<br />
irregularly 4- to 6-lobed, drying 1.5-2.3 mm diam., obsezlrinervia differ markedly in being matte and<br />
deeply depressed with the margins turned up. IN- scurfy-brown rathel than semiglossy, dark black-<br />
FRUCTESCENCES with spadix 5.5-7 cm lc)ng, green with yellow-green mottling as in D. davidsei.<br />
berries orange, 8-ll mm diam., subglobose, 2- to Another unusual vollection, possibly also a hybrid,<br />
3-seeded.<br />
is Croat & Zhu 76666 from La Mesa in Cocle Province<br />
near E1 Valle de Anton. It has the glossy in-<br />
Distribution and habitat. DieJ%enbachia david- ternodes of D. davidsei but the veins of D. obscusei<br />
ranges from northeastern Costa Rica to Panama rinervia. It is perhaps just an unusual collection of<br />
(Darien Province) and Colombia (Choco) in Pre- D. obscurinervia.<br />
montane wet fnorest (P-wf), Tropical wet forest (T-wf), Etymology. The species was first collected in<br />
and Premontane rain fnorest (P-rf) life zones (Hold- Panama by Scott Mori in 1974 along the E1 Llanoridge,<br />
1967). In Costa Rica it is known only from Carti road (Mori et al. 4184), and later in Costa<br />
the Sixaola region at 20-40 m elevation. In Panama Rica by Gerrit Davidse and C. H. Hamilton (Davit<br />
ranges from 100 to 900 m in Panama Province. idse & Hamilton 23617) in 1983. It is named in<br />
705
706 Annals of the<br />
Missouri Botanical Garden<br />
honor of Gerrit Davidse of the Missouri Botanical base, minutely granular-roughened throughout with<br />
Garden, co-editor of the Flora Mesoamericana se- white raphide cells; unsheathed portion 3-15.5 cm<br />
ries.<br />
long, sharply C-shaped, flat-sulcate, with margins<br />
Paratypes. COSTA RICA. Limon: Quebrada Mata de<br />
Limon, Finca Anai (Sixaola region), Grayum fst al. 4440<br />
(CR, MO). PANAMA. Bocas del Toro: Fortuna Lake<br />
Area, Fortuna-Chiriquf Grande, 1.6 mi. N of Cont. Divide,<br />
prominently raised; blades narrowly oblong-lanceolate,<br />
rarely sometimes narrowly ovate, or narrowly<br />
oblanceolate, 15-33 cm long, (3.5)4.5-9.5(13) cm<br />
wide (averaging 21 x 6.8 cm), 2-6.3 times longer<br />
Croat & Zhu 76533 (MO). Cocle: Cano Blanco del Norte-<br />
Cano Sucio, Davidse & Hamilton 23617 (MO, PMA); E1<br />
Cope, Cont. Divide, Hammel 13685 (MO); E1 (:ope, ca. 1/2<br />
mi. N of Cont. Divide at Alto Calvario, Croat 75100 (MO);<br />
Atl. slope, Hammel 5607 (MO). Darien: Par. Nac. del<br />
Darien, of Rfo Pucuro, vic. Tacarcuna, ca. 18 km E of<br />
Pucuro, Hammel et al. 16397 (MO). Panama: E1 Llano-<br />
Cartf Rd., 9.8 km from Interam. Hwy., Mori et al. 4184<br />
(MO). San Blas: trail to Cerro Camucanala from Rfo Titamibe,<br />
de Nevers et al. 4709 (MO, PAN); (:omarca de<br />
Kunayala, Nusigandl, E1 Llano-Cartf Rd., 10.1 mi. N of<br />
than wide, 0.38-1.48 times longer than petiole (averaging<br />
1.1 times longer), + equilateral or weakly<br />
inequilateral, one side 5-15 mm wider than the<br />
other side, thinly coriaceous to sulgcoriaceous, drying<br />
papyraceous, usually quilted, weakly lgicolorous,<br />
+ equilaterally or sometimes inequilaterally<br />
acuminate or sometimes acute at apex (acumen<br />
sometimes lgriefly apiculate), equilateral to slightly<br />
inequilateral an(l attenuate to acute, rarely rounded<br />
Interam. Hwy., Paseo Mariska, Croat & Zhu 77017 (INB, at lgase; margins usually conspicuously undulate,<br />
MO); E1 Llano-Cartf Rd., de Nevers & H. Herrera 3975 drying crisped; upper surface glossy to semiglossy<br />
(MO); km 18, Galdames et al. 1330 (STRI); Nusigandi, E1<br />
or weakly glossy, medium to dark green, sometimes<br />
Llano-Cartf Rd., betw. Nusigandf and 1 mi. N of Nusigandi,<br />
Croat & Zhu 76597 (HUA, MO); Sede de Campo mottled white or cream; lower surface matte to<br />
de PEMASKY, ca. 2() km on E1 Llano-Cartf Rd., Paredes weakly glossy, mo(lerately paler; m.idril) flat or flatet<br />
al. 940 (MO, STRI); Isla Nargana, tributary of Rfo Dia- raised and concolorous above, thicker than broad<br />
blo, Galdames et al. 1570 (PMA, STRI). Veraguas: Cerro<br />
Tute, above Alto de l'iedra, McPherson 10725<br />
to convex below drying lgrownish matte and darker<br />
(MO). CO-<br />
LOMBIA. Choco: Nuquf, Corr. Arusf, Est. Biol. E1 Amar- than surface to slightly paler than surface, granulargal,<br />
along trail to Arusl, Croat & Mor(l 83685 (MO). puberulent to conspicuously granular below; primary<br />
lateral veins 1() to 17 per side, departing mid-<br />
8. Dieffenbachia fortunensis Croat, sp. nov. rib at an actlle angle, then moderately curved<br />
TYPE: Panama. Chiriquf: along road between toward the margin at 55°-90° (mostly 55° in the<br />
Fortuna Lake and Chiriquf Grande, 4.5-5 km middle of the }lade but at more acute angles toward<br />
N of dam of Fortuna Lake, 8°43'N, 82°17'W, the apex and more olgtuse angles toward the lgase),<br />
1100-1135 m, 8 Mar. 1985, E B. Croat & M. turning upwar(l along the margins and forming a<br />
H. Grayum 60002 (holotype, M0-349012!; iso- series of fine collective veins along the margins,<br />
type, PMA!). Figures 9, 28A.<br />
some of which extend to the apex, matte, prominently<br />
sunken to narrowly or weakly sunken and<br />
Herba 4s100 cm alta; internodia 1-5 cm longa, 0 8- concolorous at)ove, thicker than broad or convex<br />
2.0 cm diam., petiolus 12-28 cm longus, vaginatus 0.37-<br />
0.83 longitudinis; vagina 6.5-14.5 cm longa, decurrens ad<br />
apicem; lamina oblongo-lanceolata, raro interdum anguste<br />
ovata vel anguste oblanceolata, 15-33 cm longa, 4.5-9.5<br />
and darker than surface, granular-puberulent to conspicuously<br />
granular below, drying darker than surface,<br />
interprimary veins usually about as conspicucm<br />
lata, nervis primariis lateralibus 10-17 lltroque; inflo- ous as primary lateral veins, minor veins moderately<br />
rescentia solitaria;<br />
12-18 cm longa;<br />
pedunculus<br />
spadix 9-11.5<br />
4.7-7 em<br />
cm longus.<br />
longus; spatha<br />
obscure to distinct; "cross-veins" loose-connected,<br />
weakly oblique, drying minutely dark-punctate. IN-<br />
Slender herb, 40-100 cm tall, sap lacking dis- FLORESCENCFJS 1 per axil, peduncle 4.5-7 cm<br />
tinctly foul aroma, stem erect except at base, con- long, spathe 12-18 cm long, 2-3.7 longer than spataining<br />
inconspicuous, mThite raphide cells, inter- dix, 1-1.5 cm diam. on tule when furled, gradually<br />
nodes 1-5 cm long, 0.8-2 cm diam., unmarked, contracted midway, gradually long-tapered to apex,<br />
semiglossy, dark green to medium green, sometimes uniformly pale green on both surfaces, spadix 9-<br />
minutely mTrinkled and glistening, drying black- 11.5 cm long, drying 3-3.2 mm diam., free portion<br />
ened, moderately smooth (lzut minutely granular on 1.5-2 cm long, drying 2 mm diam., pistillate pormagnification).<br />
LEAVES erect-spreading, + clus- tion 4.24 cm long, drying 7 mm diam. throughout,<br />
tered at/near stem apex, petioles 12-28 cm long fertile staminate portion 54.5 cm long, drying 4<br />
(averaging 19.6 em long) sheathing for 0.37-0.83 mm diam. throughout, mostly naked intermediate<br />
their length (averaging 0.58 their length), sheath portion of spadix 1.5-2.0 em long, drying 2 mm<br />
6.5-14.5 cm long (averagin; 10.1 cm), with mar- diam., with a few sterile pistillate flowers in the<br />
gins striate, decurrent distally, dark green, drying lower half, pistils 35 to 38, well-spaced, rarely<br />
blackened to dark bromTn, surface matte, striate at more than 2 dispersed across spadix width, de-
Volume 91, Number 4<br />
2004<br />
Croat<br />
Revision of Dieffenbachia<br />
Figure 9. DiefJenbachia fortmnensis. A, B. (Croat 600021. A. Habit of sterile plant. B. Leaf blade adaxial<br />
surface. C-F. (Croat 76340). C. Leaf blade abaxial surface. D. Stem showing petiole bases and free-ending sheath.<br />
E. Close-up of stem showing acutely and broadly sulcate petiole. F. Stem showing internodes and petiole bases.<br />
707
708<br />
Annals of the<br />
Missouri Botanical Garden<br />
pressed-globose, to 1.6 mm long, 1 mm diam., pale mi.l.l, Croat & Grayunz 60346 (MO).Chiriqui: Gualagreen;<br />
stigma yellow, about as broad as the pistil; ca-Chiriqui Grande, 1 km S of Cont. Divide & Bocas del<br />
Toro boundary, Croat 66866 (MO);7.2 mi. beyond Los<br />
staminodia white, 1-1.4 mm long, conspicuously Planes de Hornito, Croat 67837 (MO);8.3 mi. NW of Los<br />
thickened, drying pale orange-brown; the synan- Planes de Hornito, Croat 49971 (MO); rd. to Fortuna Dam<br />
dium 2-2.6 mm long, 1.6-2.0 mm wide, white, dry- site, N of Gualaca, 22.7 mi. beyond Rio Esti bridge, Croat<br />
ing yellow-brown, the margins irregularly angular- 48672 (MO,PMA);4.8 mi. beyond IRHE facilities at dam,<br />
Croat 68012 (INB, MO,PMA), Croat & Zhu 76340 (MO),<br />
subrounded. INFRUCTESCENCE with spadix to 6 Thonipson 4951 (CM,MO); Fortuna Dam area, Quebrada<br />
cm long; berries not seen.<br />
Los Chorros-Quebrada Hondo, to N of reservoir, Churchill<br />
& Churchill 6158 (MO), Churchill & Churchill 6159 (MO).<br />
Distribution (nd habitat. Dieffenbachia fortunensis<br />
is apparently endemic to Panama, known<br />
only from the fi ortuna Dam region of Chiriqui Prov-<br />
9. Dieffenbachia fosteri C l oal, sp. nov. TYPE:<br />
ince (hence the epithet) at 900 to 1600 m in Pre-<br />
Panama. Bocas del Toro: l jaguna de Chiriqui,<br />
montane rain Jorest (P-rf) and Lower montane rain<br />
Nuri, 15 km E of Punta (Llicamola, Ensenada<br />
forest (LM-rf) life zones (Holdridge, 1967).<br />
de Catavela to Quebra(la Nuri, 8°55'N,<br />
Phenology. Flowering occurs during the late 81°49'W, elevation neal sea level7 20 Mar.<br />
dry season an(l early wet season from March to June<br />
1993, R. Foster, A. Herre, F. Kalko & C. Hanwith<br />
fruits maluling in the late rainy season after<br />
dley 14649 (holotype, PMA!). Figure 27A.<br />
September.<br />
Planta (0.4)1-2 m alta; interno(litl 1. ) ( m longa, 1.5 cm<br />
Discussion. It is distinguished by its usually diam. in sicco; petio]us 10-29 ( rll lorlrllsX vaginatus 1/3-1/2<br />
small stature, lzloderately thin, prominently veiny, longitudinis, pars ].it)era subteles; Illlila ovato-elliptica<br />
undulate, narl owly oblong-lanceolate to narrowly vel lanceolata vel anguste ovaltl, (1 1)17-28 cm longa,<br />
(6)7-14 cm lata, nervis primblriis ll( alibus 8-13 utovate<br />
blades willl a flat-raised midrib, and petioles<br />
roque, inflorescentia I per axilltlll: I)( (lunculus 9.5 cm<br />
with the sheath (le(urrent at its apex and with a longus; spatha 20 ( n] longa, 2 ( l] (litll.; spadix 18 cm<br />
long, free, shaluly flattened-sulcate distal portion. longus; pars pisti]].ala ().5 em lollrtl (il] Illl( tu); baccae 6-<br />
Also charactel ist ic are the granular to granular-pll- 7 mm diam in si(co, I-lo(ulares.<br />
berulent majot veins on the lower blade surface.<br />
Slender herb, (().4)1-2 nl t t11; sap smelling of<br />
The species is c losest to D. beachiana, the latte<br />
oxalic acid; interno(les medilltzl >XXn, dark greendiffering<br />
in having the major veins on the lowel<br />
mottled, 1.5 cm long, drying l.5) ( z1 (liam. LEAVES<br />
surface cons,oie uously whitish puberulent an(l<br />
clustered at/near stem apex; )(ltioles 10-29 cm<br />
blades with ptirllary lateral veins more numerous<br />
long, drying 2-3 mm diam., 91le itlling 1/3 to 1/2 their<br />
and spreading c onsistently at broader angles (most<br />
length; sheath margins dl y i n> + hyaline and<br />
to ca. 90° throughout most of the blade rather thats<br />
brown, sheath apex with one si(lej ol)scure to roundonly<br />
a few VeillS near the base of the blade). 1Xed,<br />
with the other side acute; unsleathed portion<br />
terms of pubese ence D. fortunensis is closer to 1).<br />
of petiole subterete, oval in ( toss section, 12.5galdamesiae,<br />
whi(h also shares granular puberul-<br />
18.5 cm from base of blade; I)leldel.s ovate-elliptic to<br />
ence rather tllan the loose puberulence of D. belanceolate<br />
or narrowly ovate, (1/1+)17-28 x (6)7-14<br />
achiana, but I). g(ldamUesiae differs from D. fortucm,<br />
2-2.4 times longer than wi(le, somewhat inenensis<br />
in having the primary lateral veins 15 to 17<br />
quilateral, one side 1-1.5 c l wi(let than the other<br />
per side and arising at a 30°-40° angle (vs. 10 to<br />
side, acuminate at apex, the (1( llnen apiculate, 1<br />
17 per side, an(l at a 55°-90° angle). Dieffenbachi<br />
mm long, inequilateral an(l oltllse or rounded at<br />
galdamesiae is also restricted to areas east of the<br />
base; midrib convex to flat-ltlis( (l (Ind concolorous<br />
Panama Cana], while D. fortunensis is restricted to<br />
above, drying somewhat flattene({ alld concolorous<br />
far western Panama.<br />
above, convex and densely hisi(llllous, darkerthan<br />
The species has been confused with small plants<br />
surface below, drying striate witll white inclusions<br />
of D. Iutheri, a similar species from Cerro Colorado<br />
below; primary lateral veins 8 to 1.-3 per side, weakin<br />
Chiriqui Province. That species usually has widly<br />
sunken above, raised beneath, (leparting midrib<br />
er leaf blades (to 15 cm) that are ovate and dry less<br />
at an acute angle then spreading at 65°-80° in the<br />
blackened. In addition, that species has the pistillower<br />
1/2 of the blade, spreading at 45°-55° toward<br />
late and staminate portions of the spadix contiguapex,<br />
extending almost straight toward the margins<br />
ous, and lacks the mostly sterile section between<br />
then broadly sweeping toward the apex; upper surthe<br />
pistillate and staminate portion as is present on<br />
face dark green, matte, drying dark brown to some-<br />
D. fortunensis.<br />
what blackened; lower surface slightly paler than<br />
Paratypes. PANAMA. Bocas del Toro: along Cont. above, weakly glossy, drying slightly less grayish<br />
Divide rd. N off main Fortuna-Chiriqui Grande Hwy., on black than upper surface, densely grayish-speckled
Volume 91, Number 4<br />
2004<br />
Croat<br />
Revision of Dieffenbachia<br />
below. INFLORESCENCES 1 per axil; peduncle 9.5 Small herb, to 50-80 em tall; sap lacking foul<br />
cm long, 5 mm diam.; spathe 20 cm long, 2 cm odor but weakly caustic to skin; stem supported at<br />
diam., gradually long-tapered, green throughout, base by adventitious roots; internodes 6-20 x 0.5the<br />
tube flattening to 3.5 cm wide; spadix 18 cm 2.0(3.0) mm diam., dark green, weakly to moderlong,<br />
with pistillate portion to 6.5 cm long in fruit; ately glossy; petiole scar oblique, one side 3-4 mm<br />
berries 6-7 mm diam., dried, l-locular.<br />
wider than the other; petioles 18-43 cm long (averaging<br />
29 cm long), densely granular-puberulent,<br />
Distribution and habitat. DiefJ7enbachia J7osteri<br />
sheathed 0.25-0.66 their length (averaging 0.43<br />
is only known from the type in western Panama<br />
their length); sheath erect to involute, 6.5-20 cm<br />
near sea level in Bocas del Toro Province in the<br />
long (averaging 12.3 cm long), inequilaterally<br />
Tropical moist forest (T-mf) life zone (Holdridge,<br />
rounded to acute at apex; unsheathed portion 10-<br />
1967).<br />
25 cm long (averaging 16.5 cm long), sharply C-<br />
Phenology. Little is known about the phenology<br />
shaped, broadly concave adaxially; blades oblongof<br />
this species, but the type collection was in early<br />
elliptic,27-60 cm long, 6.7-18 cm wide (averaging<br />
fruit in March. Flowering probably occurred some-<br />
40.8 x 11.7 cm), 2.7-4.2 times longer than wide<br />
time during the rainy season.<br />
(averaging 3.6 times longer), 1.1-1.8 times longer<br />
Discussion. Dieffenbachia fosteri is characterthan<br />
petioles (averaging 1.2 times longer than petized<br />
by its slender, rather weakly sheathed petioles<br />
ioles), acuminate at apex, acute at base, inequilaand<br />
especially by its ovate-elliptic, somewhat<br />
teral, one side to 1.5 cm wider than the other, thinly<br />
blackish-drying blades. It is apparently not closely<br />
coriaceous, drying moderately thin; upper surface<br />
related to any other Central Americcln species,<br />
dark green and semiglossy, drying dark brown to<br />
though in the shape of blades and llle de(urrent<br />
olive-green; lower surfae e slightly pcaler, dlmost<br />
sheath clpCX it is most similar to D. killi/)ii. That<br />
matte, clrying weakly glossy, grayish to yellowish<br />
spee ies (liffers in having semiglossy l)la(les thclt (I r y<br />
brown; mi(lri/) broatlly ( onvex-flattene(l clnd ( onmore<br />
Or less green. It (ould possiluly 1)e confuse(l<br />
( olorous at)ove ndr r owly r oun(ledX niatte (larker<br />
wilh 19. grr(lyltmi(lll(l, cl spe(ies ranging alollg the<br />
cin(l slcirsely grcinulcil-t)ul)el ulent telow (Irying<br />
(2cllit)i)eclll (oclst of (:ostcl Ri(cl lo westelll l'tlllcllz<br />
darkel ll-lall SUI'fcl('C! [ltltte,,(l to ,i(lge(l with 0ne or<br />
all( larotcltely o( ( urling in the alecl wl-lere 1). /o.sleri<br />
tjolh tnargins tarrowly laise(s; /)rim,(lry l(lt,er(ll Xleill.s<br />
WclE (olle(te(l; tlowevel; the latler (liffers frolls /).<br />
1.S Io 17 I)er si(se cirising at .-3()°-4()° angle .sweel)-<br />
/os/,el-i ill llclvillS llcll10wly ovclte-sut)(ol(late tElcl(sPS<br />
ing l)rolilinently tow Ir(l tlse ll)ex with as Inally d,%<br />
ttlclt ale tyl)i( cllly ( olsl)ie uously lclle-X-llcl( ultlte a^s(l<br />
4 to 5 of thenl silnultaneously (oursilig along the<br />
also in (ryillg olive-green to yellowisll l)lown rcltte<br />
rnaigill within 1 ( In of the nsaigirl? somelilnes forinhclrs<br />
tElclf kete(s.<br />
ing weak ( olle( tive veins weakly (luilte(l-sunken<br />
A/ylzloloA,ry. 1'11e sI)ee ies is ncll-lse(l ill [o^ol of<br />
at)ove, ( onvex cln(l .slclrsely glclnulclr-T)ut)elulenl<br />
one of its (olle(torsX llobin Foster, from the liel(l<br />
dn(t s()mewhat se u I fy tel(w, (1yillg (Iarkel thcln sur-<br />
Museuln of Naturcll History in (:hicago, an exl)ert<br />
f:ae e with the ( entel ( ollal)Se(t an(l the margins ofon<br />
Neotroi( al plant etology and the vegetalion of<br />
ten thin and upturned; Illinor veins ohse urely to<br />
the N votropie s.<br />
noderalely visible and (larkel than surface above,<br />
(llying moderately (tistincl; (ross-veins sometimes<br />
10. Dieffenbachia galdarnesiae Croat, sy). nov. drying moderately distine t below. INFLORES-<br />
TYPE: Panama. Comarca de San Blas: Pe- CENCFJS to 3 per axil; peduncle 5.5-15 cm long,<br />
masky, Sen({ero Nergan Igar, km 15 on E1 L1a- 5-8 mm diam., drying 2.5-5 mm diam.; spathe 14tlO-CaI-ti<br />
Road, 9°20' N, 78°58 ' W, 350 m, 2 25 cm long, 1.6-2.5 times longer than peduncle, 2<br />
July 1994, C. Galdames, T B. Croat & M. Alba cm diam. at tube, green on both surfaces; spadix<br />
1222 (holotype, MO-5548504!; isotypes, 15.7-18 cm long; free portion 9.5-12 cm long; pis-<br />
AAU!, B!, COL!, F!, GH!, INB!, K!, MEXU!, tillate portion of spadix 7.3-10 cm long, 8 mm<br />
NY!, PMA!, RSA!, S!, SCZ!, UB!, US!, VEN!). diam.; staminate portion of spadix 7-8.5 cm long,<br />
Figures 10, 28A.<br />
6 mm diam.; the mostly sterile intermediate portion<br />
Planta 50-80 cm alta; internodia 6-20 mm longa, 0.5- 1.3-2.5 cm long with a few pistillodes extending in<br />
2.0(3.0) mm diam.; petiolus 18-43 cm longus, C-formatus, the lower 1/2; pistils 59 to 68, moderately closely<br />
vaginatus 0.25-0.66 longitudinis; lamina oblongo-ellipti- spaced, 2 to 4 situated across the width of the pisca,<br />
27-60 cm longa, 6.7-18 cm lata, nervis primariis la- tils; ovaries 1.2-2.0 mm diam.; stigmas 1.6-2.2<br />
teralibus 15-17 utroque; inflorescentia 3 per axillam; pedunculus<br />
5.5-15 cm longus; spatha 14-25 cm longa, 2 diam., depressed-globose; staminodia club-shaped,<br />
cm diam.; spadix 15.7-18 cm longa; pars pistillata 7.3- 1.8-2.8 mm long, 0.4-1.0 mm wide, flattened, free<br />
10 cm longa, 8 mm diam.<br />
to base, not expanded toward the base, thickened<br />
709
710<br />
Annals of the<br />
Missouri Botanical Garden<br />
Figure 10. Dieffienbachia galdamesiae (Croat 76560). A. Habit. B. Leaf blade adaxial surface. C. Close-up<br />
of stem showing roots and petiole bases. D. Petioles and clusters of inflorescences.<br />
and somewhat granular-puberulent at apex, syn- Phenology. The species has been seen in flowandria<br />
2.4-2.8 mm diam., irregularly rounded, er in June as well as in October. Mature fruits have<br />
broadly sulcate to truncate with slightly overlapping been seen in December.<br />
edges, the margins + crenulate. INFRUCTES- Discussion. The species is characterized by its<br />
CENCES not seen.<br />
moderately small habit, only to 80 cm tall, the gran-<br />
Distribution and habitat. Dieffenbachia galda- ular-puberulent petioles and major veins on the<br />
mesiae is endemic to Panama, known only from lower blade surface. It is most closely related to D.<br />
central Panama on both sides of the isthmus in the beachiana and D. fortunensisn differing from both<br />
Tropical wet forest (T-wf) life zone (Holdridge, 1967) in having the primary lateral veins ascending at<br />
at 350 to 500 m elevation. It occurs in swampy less than a 50° angle. It may prove to be only subconditions<br />
in creek beds in virgin forest in nearly specifically distinct from D. fortunensis.<br />
full shade.<br />
Etymology. The species is named in honor of
Volume 91, Number 4<br />
2004<br />
Croat<br />
Revision of Dieffenbachia<br />
Chilean botanist Carmen Galdames, a long-time broadly flat-raised and striate toward apex) slightly<br />
resident of Panama, who has collected in Panama paler and dark green-spotted to concolorous above,<br />
for the SCZ herbarium at the Smithsonian Tropical convex to narrowly rounded and white or narrowly<br />
Research Institute. Carmen was the first to bring acute and paler below; primary lateral veins 13 to<br />
the species to my attention and also collected the 18(to 22) per side, gradually arising at a steep angle<br />
type specimen.<br />
from the midrib, then spreading in a broad curve<br />
at 55°-80° angle, (those near the apex to 25° angle,<br />
Paratypes. PANAMA. Panama: E1 Llano-Carti Rd.,<br />
6.8 mi. from hwy., Croat 49124 (MO). San Blas: Comarca those near the base sometimes 90°-110° angle and<br />
de Kunayala, Nusigandi, E1 Llano-Carti Rd., 9 mi. N of sometimes forming a sigmoid curve), deeply sunken<br />
main hwy., Nergan Igar (Nergan Trail), Croat & Zhu above, convex below, forming a series of weakly<br />
76560 (MO, PMA). Veraguas: Dos Bocas del Rio Calov- developed collective veins that eventually merge<br />
eborita, 16-17 km NW of Santa Fe, Dressler 5316 (MO).<br />
with the margin; at least the midrib and primary<br />
lateral veins sometimes minutely farinose-granular;<br />
11. Dieffenbachia grayumiana Croat, Novon 9:<br />
minor veins moderately obscure below. INFL0-<br />
494. 1999. TYPE: Costa Rica. Limon: Refugio<br />
RESCENCE 1 to 3 per axil, sometimes subtended<br />
Nacional Barra del Colorado, forests and pasby<br />
a reduced leaf with a fully sheathed petiole (the<br />
tures between Rfo Chirripocito and Rio Sarsheath<br />
emarginate at apex) and a reduced leaf<br />
dina l Sardinal], 10°8 ' N, 83°5 ' W, 12 m, M. H.<br />
blade, 12-15 x 3.5-6.5 cm; peduncle 8-12 cm<br />
Grayum 9773 (holotype, M0-4370212!; isolong,<br />
drying 2-3 mm diam.; spathe 16.5-23.5 cm<br />
type, INB!). Figures 11, 27A.<br />
long, 3-4 cm longer than the spadix, 4.0-5.0 cm<br />
Stout herb, 1-1.5 m tall; stems erect at apical wide at base, to 2.5-3.tS cm wide at constriction,<br />
part, the o]der portion reclining for up to 1.5 m; 2.5-3 cm wide on blade (to 7 em wide when flatinternodes<br />
2.5-8.tS cm long, 2-3.5(-10) em diam., tened), uniformly light green to medium green on<br />
(lark green, glossy, variegated with eream-yellow or hoth surfac es, weakly glossy throughout outsi(le,<br />
pale green (sometimes medium green with (lark somewhat glossier within; )ez(lix 15-27 enl long;<br />
green lines as in Cro(lt & Grayum 60]4f9); /)etioles free portion 7-1t3 ( rn long; isti]]ate portion 8.0-<br />
(24-)t3()-59 ( m long (averaging
712 Annals of the<br />
Missouri Botanical Garden<br />
Figure 11. Dieffenbachia grayumiana. A. Habit (Croat 60149). B-D. (Croat 74953). B. Leaf blade adaxial<br />
surface. C. Blade abaxial surface. D. Apex of stem showing heavily sheathed petioles with sharply sulcate free<br />
portion, and speckled petiole bases.
Volume 91, Number 4<br />
2004<br />
Croat<br />
Revision of Dieffenbachia<br />
from January to June, rarely as eclrly as November. rante-13ocas del Toro, near Milla 5, Croat & Porter 16499<br />
Fruiting collections have been seen only from May<br />
(MO); Chiriqui Grande-Fortuna, 3 mi. W of Chiriquf<br />
Grande, Croat & Grayum 60149 (K, MO, PMA, US)7 Gualto<br />
September.<br />
aca-Chiriqui Grande, 8.1 mi. S of Punta Pena, Croat 74953<br />
Discussion. The species is characterized by its (MO, PMA). Chiriqui: Gualaca-Chiriqui Grande, 1.4 mi. S<br />
narrowly ovate, typically subcordate, mottled<br />
blades; weakly sheathed, decurrent petioles; and<br />
of Punta Pena, Croat 74945 (MO), M. Akers 78A (MO).<br />
variegated stems and petioles. Also characteristic 12. Dieffenbachia halnlnelii Croat & Grayum,<br />
are blades that are frequently glossy on the upper Novon 9: 496. 1999. TYPE: Costa Rica Hesurface<br />
and matte or nearly so on the lower surface. redia: Finca La Selva, O.T.S. Field Station on<br />
The major veins are sometimes minutely farinose- the Rio Sarapiqui, 50-80 m, M. H. Grayum<br />
granular on the lower sudace. In this regard it is 7670 (holotype, M0-3491533!; isotypes, B!,<br />
similar to D. beachiana: a species with puberulent CR!, K!). Figures 12, 27B.<br />
major veins on the lower blade surface. Aside from<br />
pubescence type, D. beachiana also differs in hav- Small herb, 25-40(70) cm tall; sap not fouling<br />
much narrower blades (1.8-5.3 times longer smelling; stem becoming decumbent and subrhithan<br />
wide) with more numerous pairs of primary zomatous at base; internodes 1-1.5(2.7) cm long,<br />
lateral veins (23 to 36 pairs).<br />
on lower portions, 3.5-7.5 cm long toward the apex,<br />
Dieffenbachia grayumiana is superficially simi- 0.5-2 cm diam., glossy, dark blackish green, drying<br />
lar to D. seguine from the West Indies in the shape yellowish brown to gray-green, weakly striate.<br />
and coloration of its dried blades but lacks the LEAVES erect-arching; petioles 7-25(35) cm long<br />
sharply sulcate petioles, the bicclrpellclte ovaries, (averaging 15 em long), erect, green or mottled with<br />
and the protruding stubby spadix with cl reflexed dull yellow-gl efen, (lrying greenish to sometimes<br />
spclthe b]cl(le seen in the Lltter.<br />
yCll()WiSh br()Wn, XUltd('8 (11 ying mdttC, XhUdthing<br />
A ( olle( tion from BO( clS (Je1 r1^oro Provine e in f()r (().
714 Annals of the<br />
Missouri Botanical Garden<br />
< - s -<br />
Figure 12. Diegenbachia hammelii. A, E. (Croat 78758). A. Habit of plant in the wild. B. Potted flowering<br />
plant showing habit (Duke 81-157). C. Potted plant with inflorescence at anthesis (Croat 78731). D, F. (Croat 78731).<br />
D. Leaf bases and cluster of inflorescences, the one on the right at anthesis. E. Crown of plant with an open<br />
inflorescence. F. Crown of plant with a cluster of inflorescences (one cut away to expose full-sized berries).
Volume 91, Number 4<br />
2004<br />
Croat<br />
Revision of Dieffenbachia<br />
darker than surface or slightly paler than surface erately numerous primary lateral veins. One blade<br />
below; the interprimary veins almost as conspicu- margin is usually plane and one margin usually mious<br />
as primary lateral veins; minor veins darker nutely undulate.<br />
than surface below, drying moderately faint; "cross- In Costa Rica it is most easily confused with D.<br />
veins" darker than surface below, drying moderate- Oerstedii or small plants of D. grayumiana, both of<br />
ly faint. INFLORESCENCES 1 to 3 per axil; pe- which can be distinguished in having the petiolar<br />
duncle 4.5-11 cm long, subterete in cross section; sheath auriculate at the apex rather than decurrent<br />
spathe (8)10-16 cm long, 1.3-2.7 times longer than as in D. hammelii. At La Selva, where the species<br />
peduncle, medium green throughout, and weakly was first studied, D. hammelii is uncommon. One<br />
glossy outside, medium green and glossy inside, collection (Hammel 8784) reported that the sap was<br />
cuspidate to acuminate at apex; spathe tube 6.5-<br />
12.5 cm long, 1.2-2.3 cm diam., free portion 3-6<br />
not foul smelling, as is the case with many species.<br />
Additional<br />
cm wide when flattened; spadix 6.5-15.5 cm long; Finca La<br />
free portion 4.7-7.5 cm long; pistillate portion 5- jo, Grayum<br />
8.5 cm long, 6-7 mm diam. throughout, fused with Boca de<br />
specimens seen. COSTA<br />
Selva, OTS Field Station on<br />
2772 (DUKE, MO). Limon:<br />
las Lagunas de Tortuguero,<br />
RICA. Heredia:<br />
the Rfo Puerto Vie-<br />
Tortuguero, near<br />
Burger & Antonio<br />
spathe for up to 4 cm; fertile staminate portion ta- 11224 (CR, F), Cerro Coronel, E of Rio Zapote, 1 km from<br />
pered to both ends, moderately acute at apex,<br />
banks of Rfo Colorado, Stevens 24257 (CR, MO), 2 air km<br />
(1.7)3-4.5 cm long, 6-7 mm diam. throughout; sterile<br />
intermediate segment (0.8)2-3 cm long, with a<br />
SSE of Islas Buena Vista<br />
Herrera 31077 (CR, MO);<br />
Vista in the Rfo Colorado,<br />
in the<br />
3.5<br />
Davidse<br />
Rfo Colorado, Davidse &<br />
air km S of Islas Buena<br />
& Herrera 31154 (MO),<br />
few scattered staminodia throughout; pistils 26 to Ref. Barra del Colorado [Sardinal], Grayum et al. 9744<br />
43, ovoid, sparse to moderately dense, loosely scat- (CR, MO); Pococi, Tortuguero, N end of Lomas de Sierpe,<br />
tered in clusters of 2 to 4 with up to 3 across the<br />
S from Rfo Tortuguero, Grayum et al. 11169 (CR, INB,<br />
width of spadix but often with spaces between the<br />
groups of pistils up to twice the width of the spadix,<br />
MO). San<br />
NP, along<br />
Sucio, Olcl<br />
Jose: Vazquez de<br />
San Jose to Siquirres<br />
Carillo Station site,<br />
Coronado, Braulio<br />
Hwy., along trail<br />
Crot 78758 (COL,<br />
Carrillo<br />
to Rfo<br />
GOET,<br />
sometimes in a spiral with up to 5 to 6 pistils; ova- INB, MEXU, MO, PMA, TEFH, UB, WU). NICARA(>UA.<br />
Rio<br />
ries l-locular, 2.4 mm long, 2.4 mm diam.; stigmas<br />
San Juall: near Cano Chontaleno, 20 km NE of El<br />
1.6-1.8 mm diam.; stamino(lia 2.8-3 mm long, up<br />
to twice as long as pistils, free fronl one another at<br />
Castillo,<br />
Sabalos,<br />
Neill & Vitlcelli W484<br />
KS8(zlisk 8()§JU (M()).<br />
(M()); "Marcelo" near Rio<br />
base, thi(kened at both ends, white at apex, but 13. Dieffenbachia horichii Croat & Grayum, sp.<br />
often translucent midway and dryillg flattene(l an(l nov. TYPE: Costa Rica. San Jose: Canton Perez<br />
very thin; synandrium bluntly 4- to S-side(l, mar- Zele(lon, along road betw. San Isi(lro Generalgins<br />
irregularly shaped towar(l the hase, + rounde(l Dominical, Fila Tinamastes, 9°18'24"N,<br />
at apex, 2-2.5 mm diam. INFRISCTESCENCE with 83°46'11"W, 900-1100 m, 7: B. Croat & D.<br />
spathe pale orange outside; spa(lix 22 ( m long; {)er- Hannon 79115 (holotype, MO-05095465!; isories<br />
orange to bright red, obovoid-ellipsoid, 1 cm types, AAU!, B!, CAS!, COL!, CR!, DUKE!, F!,<br />
long, 8 mm diam.<br />
GH!, HUA!, INB!, K!, MEXU!, NY!, P!, PMA!,<br />
Distribution and habitat. DieJ%enbachia hammelii<br />
occurs in southeastern Nicaragua (Dpto. Rio<br />
QCNE!, RSA!, S!, SCZ!, TEFH!, TEX!, UB!,<br />
US!, VEN!, MIU!). Figures 13, 27A.<br />
San Juan) and northern Costa Rica from sea level Planta terrestris, 1.0-1.5(2) m; internodia 1-3 cm lonto<br />
100 m in the Tropical wet forest (T-wf) life zone ga, 4-6 cm diam.; petiolus 8-33 cm longus, vaginatus fere<br />
omnino; vagina<br />
(Holdridge, 1967), in wet forests and swampy areas ovato-elliptica,<br />
on the Atlantic slope.<br />
mariis lateralibus<br />
Phenology. Flowering plants of D. hammelii quoque axilla;<br />
libera 1.5<br />
2Sb0 em<br />
1v21<br />
pedunculus<br />
cm longa; lamina elliptica vel<br />
longa, 9-30 cm lata, nervis priutroque,<br />
inflorescentia 3-6 in<br />
8.5-19 cm longus; spatha<br />
have been seen from March through May and also 14.5-32.5 cm longa; spadix 13-17 cm longus; pistilla 43-<br />
69.<br />
July, while mature fruits have been seen in August<br />
and September. Cultivated plants at the Missouri Stout herb, 1-1.5(2) m tall; sap white, copious,<br />
Botanical Garden flowered in mid July and mid Oc- foetid, caustic; stem erect on younger parts, to 1.2<br />
tober.<br />
m long and reclining on older parts, internodes 1-<br />
Discussion. The species is characterized by its 3 cm long, 4-6 cm diam., semiglossy to glossy, dark<br />
small stature, typically 25-40 cm; its glossy, de- green to medium green; petioles 8-33 cm long (avcumbent,<br />
subrhizomatous stems; weakly sheathed, eraging 18.7 cm long), weakly glossy, sheathing<br />
matte-drying petioles (sheath decurrent at apex); nearly or completely throughout; sheath medium<br />
and moderately small, more or less oblong-elliptic, green streaked with yellow-green, margins involute,<br />
weakly inequilateral green leaf blades with mod- the tip free-ending and irlequilaterally rounded-au-<br />
715
716<br />
Annals of the<br />
Missouri Botanical Garden<br />
Figure 13. Dieffenbachia horichii. AX B. (Croat & Hannon 79115). A. Habit of flowering plant. B. Crown of<br />
plant with cluster of inflorescences. CX DX E. (Croat 79073). C. Plant with inflorescence at anthesis. D. Close-up<br />
of stem with petiole bases. E. Close-up of lamina base and close-up of inflorescence.<br />
riculate (auricle sometimes extending up to 1.5 cm nate at apex, + equilateral and obtuse to rounded<br />
beyond blade); unsheathed portion lacking or to 1.2 (rarely acute or narrowly rounded) at base, margins<br />
cm long (rarely to 6 cm long), obtusely somewhat weakly undulate; upper surface dark green, semiflattened<br />
in cross section; blades narrowly to broad- glossy to highly glossy, drying dark gray-green to<br />
ly elliptic to ovate-elliptic, 26-60 x 9-30 cm (av- dark yellow-brown; lower surface weakly glossy to<br />
eraging 45 x 19 cm), 1.9-3.4 times longer than matte, moderately paler, drying yellow-brown to<br />
wide (averaging 2.5 times longer), 1.7-4 times lon- yellowish green; midrib broadly and shallowly<br />
ger than petiole, slightly inequilateral, one side sunken to flat-sunken above, 5-20 mm diam., con-<br />
0.5-1.2 cm wider than the other side, subcoria- vex and bluntly low-triangular below, drying light<br />
ceous to coriaceous, somewhat bicolorous, acumi- brown to dark brown paler than surface below; pri-
Volume 91, Number 4<br />
2004<br />
Croat<br />
Revision of Dieffenbachia<br />
mary lateral veins 14 to 21 per side, departing mid- but flowering collections have also been seen in<br />
rib at a mostly 30°-40° angle above middle, often September. Immature inflorescences have been<br />
70°-90°, often arising at an acute angle, spreading seen from November to May, and mature fruits have<br />
to the margins, broadly curved toward apex, even- been seen from the late rainy season (November)<br />
tually merging at margins, weakly sunken above, to early rainy season (late June).<br />
weakly convex below, drying brownish and darker Discussion. The species is characterized by its<br />
than surface below; the interprimary veins usually fully sheathed petioles, involute petiolar sheath,<br />
darker than surface, 1 between each pair of primary and by its thick and more or less elliptic, semilateral<br />
veins; minor veins visible, slightly darker glossy to glossy, mostly unvariegated blades that<br />
than surface, drying moderately obscure on lower dry somewhat greenish to yellow-brown.<br />
surface. INFLORESCENCES 3 to 6 per axil; pe- Dieffenbachia horichii is closely related to two<br />
duncle 8.5-19 cm long (averaging 13.5 cm), 3-6 other species with petioles fully sheathed or nearly<br />
mm diam., drying striate; spathe 14.5-32.5 cm so. These are D. panamensis and D. standleyi. In<br />
long, 4-5.5 cm diam. (averaging 20.8 cm long), comparison with D. horichii: D. panamensis has<br />
2.5-4 cm diam. at constriction, 0.9-2.3 times lon- similarly shaped blades and petioles fully sheathed,<br />
ger than the peduncle (averaging 1.5 times longer but that species differs in having the petiole sheath<br />
than the peduncle), gradually long-tapered toward usually flaring and recurled rather than involute as<br />
apex from midway, light green to medium green in D. horichii. It also has leaf blades with the upper<br />
throughout; spathe tube 3 x 2.3 cm diam. when surface matte and subvelvety that dry blackened.<br />
furled (flattening 4.0-5.5 cm wide), the constricted Another difference is that D. panamensis occurs<br />
area flattening 2.5-4.0 cm wide; spathe blaele 2.5- principally on the Atlantic: slope of central Panama,<br />
4 cm wide at anthesis; spadix 13-27 cm long (av- whereas D. horichii occurs on the Pacific slope of<br />
eraging 17.4 c m long); free portion 10-13.5 ( m Costa Rica.<br />
long; pistillate portion to (6.5)8-10.8 cm long (av- DieJ/en/)lchi(l horichii is likely to I)e (onfuse(l<br />
eraging 8.3 c m long), 8-17 mm wide, drying 8 mln with D. .st(ln(lleyi: another sr)ee ies with fully or<br />
diam.; feltile staminate )ortion 8. 3-12 cm long, mostly winpr,(l Xetioles. That sI)ee ies oe ( urs; on the<br />
c rearm-( olore(le mo(lerately tapere(l towar(l aI)ex an(l Atlantie slole of Hon(luras an(l Nie arapr,ua, an(l (lifweakly<br />
talxere(l towar(l baxe, 7-12 mln (liam. mi(l- fers lxy 11avinpr, the [)etiole slleatll eree t an(l re( urle(l<br />
way; mostly xtel ile interlne(liclte segnlerlt 1 .7--3.7 outwar(l alont, the margins an(l a(ute at the ay)ex<br />
cm long, witll a few xcattele(l xtamino(lia through- with the sheath margins marke(lly un(lulate (vs. tlle<br />
out; pixtilx 4.-3 to 69, irregulal Iy scattere(l, neal Iy sheath malgins illvolute an(l smooth). 'I'he letioles<br />
contiguouse .-3 to 4(6 to 7) (lisl)erse(l acloxs xla(lix of l). .ft(lMdleyi are also longer on average, frequentwidth?<br />
xelalate(l from one another by ul) to 4 tinlex ly more than 25 c m long, an( average 3() (m long<br />
their width; ovary depresse(l-globoxeX 2 mm long, (vs. fre(uently 1ess than 25 c rll long, averaging less<br />
yellow-green; xtigma cushion-S;hape(l, 2.8-3.4 mm than 2() ( m long for l). horichii). Tn a(i(itionX the<br />
diam., about twice as wide ax thick and usually upper midrib on the l)lades of D. stclol(lleyi is broa(lbroader<br />
than the pistil at anthesix, yellowish; xta- ly concave, whereas on D. horichii the midril) is<br />
minodia white, 3 to 5 per pistil, 3-4 mm long, free l)roadly (onvex with a medial sulcus lout with the<br />
or briefly united at base; synan(lria 1.6-3.0 mm entire midrib sunken in a valley.<br />
diam., subrounde(l, depressed medially at apex, Most of the typical material of D. stan(lleyi has<br />
drying orange-brown. INFRUCTESCENCE 19-24 been collected in the Lancetilla Valley and its vicm<br />
long; spathe orange outsi(le; spadix 8-15 cm cinity in HoncAllras, and has blades considerably<br />
long; berries red, subglobose, ovoid to ellipsoid, 7- longer on average than those of D. horichii. Some<br />
10 mm long.<br />
collections in Nicaragua and in western Costa Rica<br />
are unusual. Stevens 7457 from Zelaya and Moreno<br />
Distribution and habitat. Dieffenbachia horichii 17142 from Matagalpa dry a darker yellow-brown.<br />
is known only from the Pacific slope of Costa Rica The only other species in Central America that has<br />
from the Carara reserve and Puriscal region to the a fully sheathed petiole is D. tonduzii. Dieffenbach-<br />
San Isidro region and Dominical. It occurs in Pre- ia tonduzii is distinguished by having smaller and<br />
montane rain forest (P-rf) and transition forests be- thinner blades (rarely to 45 cm long and 20 cm<br />
tween Tropical wet forest (T-wf) and Premontane wide) that are usually matte to weakly glossy above<br />
rain forest (P-rf) life zones (Holdridge, 1967), from (vs. usually glossy in D. horichii) with more primary<br />
sea level to 900 m.<br />
lateral veins (18 to 25 vs. usually fewer than 20 in<br />
Phenology. Dieffenbachia horichii begins to D. horichii). Grayum 4757: from the Carara Reflower<br />
in the early rainy season from May to July, serve in Puntarenas Province, is perhaps a hybrid<br />
717
718 Annals of the<br />
Missouri Botanical Garden<br />
between D. horichii (Grayum 4756) and D. oerstedii sheath 8.5-21 cm long (averaging 14 cm), with<br />
(Grayum 4765). It differs in having petioles that are margins drying thin, light brown and minutely unnarrower<br />
and less fully sheathed.<br />
dulate, the tip inequilaterally acute to emarginate<br />
Etymology. The species is named in honor of and free-ending; unsheathed portion flattened or<br />
horticulturist Clarence Horich, who made the first rounded and becoming weakly sulcate toward apex<br />
collection of the species.<br />
in cross section (never sharply sulcate), blunt to<br />
Paratypes. COSTA RICA. Puntarenas: San Jose<br />
Province, Playa Dominical-San Isidro del General Baru,<br />
'rinamastes, Burger et al. 10669 (F, MO), Burger & Baker<br />
10137 (CR, F), along Quebrada Bonita, Carara Res., Grayum<br />
et al. 5723 (INB, MO), Finca E1 Eden, km 183, R.<br />
2, ca. 400 m E of Santa Marta, L. G6mez 22951 (B, CM,<br />
CR, MO); Quebrada Bonita, Carara Res., Grayun 4756<br />
(CR, MO), Croat 79073 (EAP, INB, MO, PMA), hills at<br />
SW part of Montanas Jamaica, ca. 2.5 km NE of Bijagual<br />
moderately acute, rarely broadly and bluntly sulcate;<br />
blades oblong-ovate to narrowly ovate, (12)15-<br />
30(39) cm long, (6)10-26 cm wide (averaging 26<br />
x 16 cm), 0.78-1.77 times longer than petiole (averaging<br />
1.1 times longer), inequilateral, one side<br />
0.5-2.6 cm wider than the other side thinly coriaceous,<br />
abruptly to gradually acuminate at apex,<br />
acute to cordate at base, the sides often + unequal,<br />
de Turrubares, Carara Res., Grayu1m et al. 5467 (MO). usually subcordate with at least one side subcor-<br />
San Jose: Par. Nac. Braulio Carrillo, Quebrada Sanguijuela,<br />
Chavarrfa & Untana 157 (CR, MO), Zona Prot. La<br />
Cangreja, vic. Quebrada Grande, ca. 2 km NNE of Mastatal<br />
de Puriscal, Grayun 8638 (CR, MO), ZP La Cangreja,<br />
ca. 1.5 km E of Santa Rosa de Puriscal, Grayun et al.<br />
8336 (CR, MO), San Jose rd. from Parrita to Santiago de<br />
Purriscal, Barringer 1790B (CR), Res. Biol. Carara-Est.<br />
Quebrada Bonita, Chac6n 1406 (CR), Cordillera Talamanca,<br />
Rfo Hermoso, Finca E1 Quizarra, L. Willianes et al.<br />
28479 (F, NY, US); Acosta, along Rfo Parritilla, ca. 1 km<br />
date at base; upper surface matte to weakly glossy,<br />
dark green, drying dark gray-green to sometimes<br />
blackened; lower surface matte, paler, drying yellowish<br />
gray-brown to dark yellow-brown; midrib 5-<br />
8 mm diam., flat to broadly and obscurely sunken<br />
at base, weakly raised toward apex above, concolorous<br />
to slightly paler than surface, frequently<br />
much paler than surface or even white toward apex,<br />
E of Zoncuano, Grflyum el al. 11174 (INB, MO); Perez<br />
Zeled6n, Fila Tinanlaste, Valverde 741 (CR, MO); Puriscal,<br />
Fila Tufares, Salitrclles de Puriscal, Goncez-Laurito 7792<br />
(CR); Z.P. La Cangreja, Cerros de Puriscal, San Martfn de<br />
Puriscal, La Fila Vala Blanca, J. Morales 2035 ((21t, INB,<br />
MO).<br />
Cultivated specimens. Costa Rica. 800-900 z1, cultivated<br />
at Munich as 1203/74, Horich s.n. (M).<br />
often with a light green streak distally! drying paler<br />
than surface or darker than surface al)ove, convex<br />
to bluntly round-raised, drying somewhat flattened<br />
with acute ribs below, drying darkel than surface<br />
below; primary lateral veins 7 to 12(15) per side,<br />
departing midrib at a 45°-55° angle (to 30°-50° at<br />
apex, 50°-90° at base), arising a( utely, then<br />
14. Dieffenbachia isthlnia Croat, sp. nov.<br />
TYPE: Panama: along trail betw. Rfo Maje &<br />
Quebrada Brava, 60 m, 4 May 1976, 1: B.<br />
Croat 34656 (holotype, M0-240198!; isotypes,<br />
B!, K!, PMA!, US!). Figures 14, 28A.<br />
spreading weakly or not at all sunkell often greenish<br />
toward apex, sometimes raise(l 1leal midrib, and<br />
diminishing toward margins above; lllinor veins obscure<br />
above, obscurely visible to not visible below.<br />
INFLORESCENCES straight to sliglltly curved, 3<br />
to 5 per axil, bracteoles 9-20 cm long; peduncle<br />
Planta<br />
2-3(4.5)<br />
plerumque<br />
cm diam.,<br />
ad 1 m,<br />
atroviridia;<br />
internodia<br />
petiolus<br />
0.5-3<br />
11-34(40)<br />
cm longa,<br />
cm lon-<br />
(2.5)4-12.5 cm long, 6-10 mm diall., sometimes<br />
flattened on one side in cross sec.ti(-)n, green; spathe<br />
gus, vaginatus 0.4-0.77 longitudinis, vagina 8.5-21 cm 15-17.5(23) cm long, medium green outside, slightlonga,<br />
lamina oblongo-ovata vel anguste ovata, (12)15-<br />
30(39) cm longa, (6)10-26 cm lata, plerumque subcordata,<br />
nervis primariis lateralibus 7-12(15) utroque, inflorescentia<br />
3-5 per quoque axillam; pedunculus (2.5)4ly<br />
paler green inside throughout, except the apical<br />
portion white at anthesis, to 1.7 c m lollger than the<br />
spadix, elongating somewhat after closing; spathe<br />
12.5 cm longus, spatha 15-17.5(23) cm longa, spadix tube less than 2 cm diam. when furled, spathe<br />
10.5-15.8 cm longus; pars feminea 6.5-9.5 cm longa, 1.4 blade 2.5-3 cm diam. at anthesis; s)
Volume 91, Number 4<br />
2004<br />
Croat<br />
Revision of Dieffenbachia<br />
Figure 14. Dieffenbachia isthmia (Croat & Zhu 77115). A. Leaf blade adaxial surface. B. Close-up of petioles<br />
showing inflorescence. C. Close-up of female portion of spadix showing pistils and staminodes. D. Infructescences,<br />
one cut off to show the fruits.<br />
719
720<br />
Annals of the<br />
Missouri Botanical Garden<br />
larly somewhat rounded, margins often irregularly & Croat 906 (DUKE), Croat 15173 (MO), Croat 5819<br />
turned upward. INFRUCTESCENCE with spathe to<br />
(MO), Croat 6308 (MO), Croat 6502 (MO, PMA), Croat<br />
4576 (MO), Killip 39979 (US), Kenoyer 188 (US); 12 mi.<br />
23.5 cm long, usually orange; spadix, 9-12 cm S of Col6n on Rio Providencia, Tyson &: Blurn 3998<br />
long, ca. 3 cm wide, berries orange to red or orange- (PMA); Frijoles vic., Pittier 3754 (US), Bailey 335 (F);<br />
red, drying pale yellow-brown, ellipsoid, T-8 mm Gatun Lake, Standley 41107 (US), Standley 40960 (US),<br />
long, 6 mm diam. (the stigmatic area ca. 2 mm AIaxon et al. 6812 (US), Maxon et al. 6820 (US), Standley<br />
31266 (US); Rio Paraiso, above East Paraiso, Standley<br />
wide); seeds drying dark brown, 6 mm long, 5 mm 29867 (US). Colon: Rio Guanche, ca. 5 km upstream<br />
diam., to 3 mm thick, moderately smooth, caved from rd. to Portobelo, Harernel &: Trainer 14767 (MO).<br />
outward on funicular side.<br />
Darien: PN Cerro Pirre, vic. Rio Perisenico, Croat &: Zhu<br />
77115 (INB, MO); 112 mi. E of Bayano Dam Bridge, vic.<br />
Distril)utio71 (ln(l habitat. Dieffienbachia isthmia Cangl6n, Antonio 4546 (MO, PMA); trail from Cana to<br />
ranges from Panallla to Colombia (Antioquia and Colombian border alollg Rio Setgandi, Gentry et al. 28574<br />
Choco). The spee ies is highly variable ecologically, (COL, MO); E1 Real-l'inogana, Duke 5014 (MO); 3 mi. N<br />
occurring )rin( i)ally in Tropical moist J7orest (T-mf)<br />
of Santa Fe, Tyson et (ll. 4631 (SCZ), 4632 (MO, SCZ); 2<br />
mi. E of Santa Fe, Tyson et al. 4834 (STRI); PN del Daand<br />
drier parts of Premontane wet J7orest (P-wf) life rien, between Rio Tol)alisa 8 Rio Pucuro, ca. 17 km E of<br />
zones at 50-8()()(1 ()()()) m elevation, but also in Pre- Pucuro, La Laguna alecl, Harernel et al. 16262 (CAS, COL,<br />
montane moist /or()st (P-mf), Premontane wet forest MO, PMA); airstrip at Cana gold mine area, Croat 38010<br />
(P-wf), and Tro/)ie (ll wet forest (T-wf) life zones (MO), 38057 (MO); S of E1 Real, Alturas de Nique, near<br />
Cana mine, rd. to Boen de Cupe, McPherson 11591 (MO);<br />
(Holdri(lge, 1967) in Colombia. In Panama, the Cana region, ca. 1.5 klrs from Cana trail to Boca de Cupe,<br />
species ranges fX om Veraguas Province to the McPherson 15037 (M()). Herrera: NZZ of Las Minas, near<br />
Azuero Peninsultl ill the west (700-900 m in Her- Chepo, on Montosa (Je Chepo, McPherson 10958 (MO);<br />
rera an(l I os Salltos I'rovinces).<br />
Dist. Las Minas, Ch(\|o, loma E1 Montuoso, Galdarnes et<br />
al. 1626<br />
Phenology. It'lowering for D. isthmia oecurs in<br />
(MO, PMA, US); Las Minas, base of E1 Higo,<br />
Galdarnes et al. 248f) (I'MA, US). Los Santos: Loma Priethe<br />
early rainy se.lsion from May to September (rare- ta, Cerro Grande, I(l(i.s et al. 2195 (COL, DUKE, MO,<br />
ly in Novellll) l )^ with fruits maturing during the UC). Panama: Disll ilo (:hepo, Puerto Coquira, Zarnbrano<br />
dry season arl(} etltly rainy season of the following & Delgado 1336 (PM \); San Jose Island, I. Johnston 1165<br />
year, mostly ill Al)lil and May, but with many col- (GH); vic. Bayano llk( dam near Canita, Gentry & Tyson<br />
1653 (MO, PMA); (Jllilllcin Lewis et al. 3251 (MO); 3.8<br />
lections ma(le i ll I ru i t from August to Oe tol)er. mi. E of Rio Ipeti, louel slopes of Serrania de Maje, HuJ2t<br />
Discus.siosl. '1'11e species is characterize(l by its & Jacobs 1997 (M()); Itfo Majo-Quebrada Brava, ca. 2 mi.<br />
moderately small (usually less than 1 m tall and upstream from watell'tllls near edge of Bayano Lake, Croat<br />
with stems usually less less than 2.5 cm diam.) 34745 (MO); Isla 13tlstlno, Garibaldi 68 (MO); near Chihabit<br />
and frequently subcordate blackish-drying<br />
man, ca. 2 mi. up lwlo La Maestra, Kennedy 1193 (F).<br />
Veraguas: near plol)osed route of rd. from E1 Cortezo to<br />
blades which often have a white streak on the distil Arenas, Harernel 5.X72] (MO); Azuero Peninsula, trail behalf<br />
of the flattened (not flat-raised) midrib. In Pan- tween Jobero and lleadwaters of Rio Pedregal, Croat<br />
ama, it is probal)ly most easily confused with D. 34475 (COL, F, M(), I'MA); 18 km NZZ of Las Minas, Cerro<br />
killipii, which differs in having proportionately nar- Alto Higo, Harernel 12(98 (MO); "Los Girasoles," Escuela<br />
Agricola Alto Piedltl ( a. 5 km NW of Santa Fe, Dressler<br />
rower (typically only to 16 cm), usually subcordate 4716 (DUKE, F, M(), I'MA); 18 km W of Las Minas, Cerro<br />
greenish-drying blades with the uppel midrib Alto Higo, Harernel jU98 (MO); Cerro Delgadito just NW<br />
weakly flat-raised rather than merely flattened of Cerro Tute, S of Fiarlta Fe, Luteyn 4043 (DUIkE); Dist.<br />
above.<br />
Montijo, Isla Coiba, (erro de La Torre, Galdarnes et al.<br />
2286<br />
Though its range does not overlap with D. isth-<br />
(MO); Isla Coila, Rio Escondido vic., Galdarnes et<br />
al. 2252 (MO). COI ()MBIA. Antioquia: Mutata, Bajiramia,<br />
D. oerstedii may be confused with this species. Nuevo Oriente RoafJ, Brand & Ascanio 277 (COL). Cho-<br />
The latter, ranging from Mexico to central Panama, co: Riosucio, PN Natural Los Catios, Campamento de Tildiffers<br />
in having a usually sharply sulcate petiole upo, Forero et al. 1723 (COL, MO).<br />
and blades that dry greenish to yellowish green<br />
rather than blackened as is usually the case in D. 15. Dieffenbachia killipii Croat, sp. nov. TYPE:<br />
. I -<br />
IsthUmla.<br />
Panama. Cocle: vic. of E1 Valle de Anton, La<br />
Etymolog;y. The species epithet ;;isthmia" re- Mesa, forested flat area near Finca Macarenita,<br />
fers to its dominance in the area of the Isthmus of 8°36'N, 80°0T'M1, 800 m, 6 July 1994, YS B.<br />
Panama.<br />
Croat & G. Zhu 76666 (holotype, MO-<br />
04612287!, isotypes, AAU!, B!, CAS!, COL!,<br />
Paratypes. PANAMA. Canal Area: Barro Colorado<br />
Island, Aviles 24 (MO), Shattuck 397 (MO); Lutz Trail, CR!, DUKE!, F!, GH!, HUA!, INB!, K!, M!,<br />
Croat 5378 (F, MO, RSA, SCZ, STRI), Croat 10133 (MO), MEXU!, NY!, PMA!, SCZ!, US!, VEN!, WU!).<br />
Croat 5317 (MO), Croat 5896 (MO), Croat 7712 (MO), Figure 15, 28B.<br />
Croat 11291 (F, NY, SCZ), Croat 5183 (MO), Croat 10982<br />
(MO, SCZ), Croat 5709 (MO), Foster 865 (DUKE), Luteyn Planta terrestris, 40-100 cm.; internodia 1.5-5.5 cm
Volume 91, Number 4<br />
2004<br />
Croat<br />
Revision of Dieffenbachia<br />
Figure 15. Dieffenbachia killipii. A. Habit showing plant with quilted primary lateral veins (Croat 56902). B.<br />
Leaf blade adaxial surface (Croat 78247). C. Close-up of adaxial surface of blade (Croat 74759). D. Habit of<br />
flowering plant (Croat 76666). E, G. (Croat 75154). E. Close-up of stems. F. Habit of flowering plant (Croat 76666).<br />
G. Close-up of two inflorescences, one at anthesis. H. Close-up of pistillate and sterile staminate portions of spadix<br />
(Croat 76259).<br />
721
722 Annals of the<br />
Missouri Botanical Garden<br />
longa, (0.8)1.5-3(4) cm diam; petiolus (4)6-20124.5) cm vex, slightly paler to concolorous above, thicker<br />
longus, vaginatus 2/5 longitudinis vel fere omnino; lamina<br />
than broad and narrowly rounded to almost roundoblongo-elliptica<br />
vel oblongo-ovato, (13)19-30(33.5) cm<br />
longa, (4.5)7-16(21.3) cm lata, nervis primariis laterali3ous raised, matte, paler than surface to almost conco-<br />
8-12 utroque; imSorescentia 1-4 in quoque axilla; pedun- lorous below, drying brown with ridges, darker than<br />
culus 4.5-9 cm longus; spatha 12-19 cm longa; spadix surface below; primary lateral veins 8 to 12 per<br />
12-15 cm longus; pistilla 20-37.<br />
side, arising at an acute angle, then spreading at<br />
mostly (40°)45°-70° angle (rarely to 30°, sometimes<br />
Medium-sized herb, 40-100 cm tall, stem creepto<br />
80° toward base, rarely to 110° at base), freing<br />
over surface of ground at base, then erect; sap<br />
quently forming collective veins that merge with the<br />
milky, unscented; internodes initially weakly glossy,<br />
margin higher up on the blade, narrowly sunken to<br />
often faintly dark green and medium yellowish<br />
weakly quilted-sunken above, thicker than broad to<br />
green-marbled at lower nodes, becoming glossier in<br />
convex and weakly pleated-raised, darker than surage,<br />
1.5-5.5 cm long, (0.8)1.5-3(4) cm diam., meface<br />
to almost concolorous below, usually drying<br />
dium to dark green or olive-green or black-green,<br />
darker than surface; minor veins few, obscure<br />
drying dark yellow-brown to orange-brown, rarely<br />
above, obscurely visible and darker than surface to<br />
dark brown, epidermis sometimes fissured in a<br />
moderately distinct below. INFLORESCENCES 1<br />
cracked network so as to appear corky in some arto<br />
4 per axil; bracts 9-20 cm long; peduncle 4.5-9<br />
eas. LEAVES scattered along stem, denser near<br />
cm long, 6-7 mm diam., medium green, white at<br />
apex; petioles (4)S20(24.5) cm long (averaging base; .s/)athe 12-19 cm long at anthesis, 1-2 cm<br />
12.2 cm long), firm to spongy, slightly paler or dark- longel than the spadix, medium green throughout,<br />
er than stem, medium green to dark green, matte sometimes faintly dark green-lineate on faded areas<br />
to weakly glossy, faintly striate toward the base, outsi(le, slightly paler and glossy inside; spathe<br />
drying greenish to grayish yellow to brown, sheath- tube 2-3 cm diam. when closecl, 5.5-7.5 cm wide<br />
ing for 2/, to fully throughout (0.4-1 the petiole when [lattened, 1.5-2 cm (liam. at constriction (flatlength<br />
and averaging 0.69); sheath 3-18 cm long, tening 3.5-4 cm wide); spathe bla(3e 2.5-3 em<br />
(averaging 8 ( m), with the sheath margins not dry- dianl.; spadix bluntly pointe(lX weakly protruding<br />
ing markedly different than the remainder of folwal(l at anthesis, 12-1tS (m long; free portion<br />
sheath; sheath apex with the tip free-ending and 5.5-() ( m long (sometimes with a few l)istillate flowinequilaterally<br />
acute to emarginate, sometimes dry- ers itl the basal portion); pistillate portion 5-8.5 cm<br />
ing acute; unsheathed portion C-shaped and sharp- long. 1 0 mm diam. throughout; fert i le staminate<br />
ly sulcate to narrowly and sharply sulcate to sub- portiotl 4.5-6.8 cm long, 7-8 mm diam. midway,<br />
terete and weakly sulcate or obtusely and narrowly sometimes bluntly pointed (frequently with the<br />
sulcate in cross section; blades oblong-elliptic to witheled portion weakly protruding out of the front<br />
oblong-ovate, rarely narrowly ovate, (13)19- of the spathe after anthesis); sterile intermediate<br />
30(33.5) x (4.5)7-16(21.3) cm (averaging 25 x 11 seglllent to ca. 5 mm diam., but usua]ly absent with<br />
em), 1.5-4.2 times longer than wide, as long as or the )istillate and staminate portions alrnost conti;up<br />
to 4.8 times longer than petiole (averaging 2.3 uous; pistils 20 to 37, well-spaced, sometimes agtimes<br />
longer than petiole), inequilateral, one side gregated into weak rows, frequent Iy irregularly<br />
0.5-1.5 cm wider than the other side, sometimes gapy)ed, 2 or 3(6) dispersed across s^)adix width,<br />
falcate, subcoriaceous to weakly coriaceous, mod- widely spaced at base and at apex, )ale yellowerately<br />
bicolorous, acuminate to gradually acumi- green, 2.4 mm diam., 1.4 mm high; stigma 1.8-2.2<br />
nate at apex inequilateral, sometimes inequilater- mm diam.; staminodia very thickene(l and mostly<br />
ally rounded to subcordate, rarely acute at base; joined at base, tapered gradually toward apex and<br />
margins moderately straight on one side, frequently not markedly thickened, sometimes broadened latmarkedly<br />
undulate on other side; upper surface se- erally and apparently consisting of a union of 2<br />
miglossy, dark green, frequently white, pale green staminodia, sometimes with 2 pistils contiguous<br />
or yellowish green-spotted or white-streaked, dry- and apparently sharing staminodia; synandria 1.2ing<br />
dark brown to olive-brown or gray-green; lower 1.4 mm diam., ca. 4 per spiral, irregularly rounded<br />
surface paler, matte to weakly glossy, drying yellow- to 4- to 6-sided, drying widely spaced, the margins<br />
brown; sinus less than 1 cm deep, rarely to 2.5 cm of apex markedly turned upward. INFRUCTESdeep;<br />
rnidrib flat-raised, 3-5 mm wide, sometimes CENCE to 23 em long; spathe orange outside; spasulcate<br />
toward base, usually in moderately deep dinc 9-10.5 cm long, 2.S em wide; berries red to<br />
valleys, usually concolorous, sometimes paler than reddish orange or orange-red, drying pale orangesurface<br />
aboveX sometimes weakly 3- to a-grooved brown, ellipsoid, 2- to 3-lobed, 7-8 mm long, S<br />
on upper surface, drying flat-raised to broadly con- 10 mm diam.; seeds 1 to 2 per berryS drying dark
Volume 91, Number 4<br />
2004<br />
Croat<br />
Revision of Dieffenbachia<br />
, . .<br />
brown, flattened on funicular side, to 4.9 mm long, 50480 and Plowman & Davis 4094, both collected<br />
4.4 mm diam., drying smooth, 3 mm thick. along the Baeza to Tena Road, at 1410 and ca.<br />
1743 m, respectively, and Croat 72573 south of<br />
Distribution and habitat. Dieffenbachia killipii Coca at 300 m. An unvouchered collection made<br />
ranges from southwestern Costa Rica (Puntarenas) by Tan, Halton, and Besse at the Auca Oil Field at<br />
to Panama and the western slopes of the Andes in 240 m is also the same species. It has been vouch-<br />
Colombia (Antioquia, Choco, Tolima, and Valle) ered from the Marie Selby Botanical Gardens' livand<br />
Ecuador (Esmeraldas, Guayas, E1 Oro, Pichin- ing collection (SEL 79-0090) by Plowman 14121<br />
cha, Los Rios, and Manabi on the Pacific slope and and Ingram 1124.<br />
in Napo on the Atlantic slope) at 0 to 900 m ele- Gentry et al. 65306, from Quindio Department,<br />
vation. In Panama it occurs in Tropical wet forest Colombia, at 1400 m, may also be this species, but<br />
(T-wf) and Premontane wet forest (P-wf) life zones it is from higher elevation than other Colombian<br />
(Holdridge, 1967) and ranges from Cocle Province collections. A collection made in Venezuela at Maito<br />
Darien Province in the east. In Colombia it is quetia at 30 m near the Caribbean (Andre' 457A)<br />
known from Tropical wet forest (T-wf) and Tropical appears to also be D. killipii. However, this may be<br />
rain forest transition to Premontane wet forest (T-rf/ questioned because Andre 457 was labeled as hav-<br />
P-wf) life zones.<br />
ing been collected in Colombia at Angostura de<br />
Phenology. F8lowering occurs in D. kill ipii Honda (Tolima). Both collections were dated Dethroughout<br />
the year, with most flowering specimens cember 1875.<br />
having been made in the late rainy season from In South America the species may be confused<br />
September to November. Fruiting collections were with D. enderi, described from the valley of the Rfo<br />
made mostly during the late dry season and early Cauca in Colombia. That species is similar in havrainy<br />
season of the following year from May to July. ing the petiole sheath auriculate and free-ending at<br />
Few fruiting collections were Kseen between AuguKst the apex, and in having the staminate and pistillate<br />
and May.<br />
spadives (ontiguous. Tt diffels in having a thicker<br />
Di.scu.s.sion. The specieKs is chara(terized by its stem (to 8-9 cm diam.), longer blades (to 50 cm<br />
medium stature (to 1 m), slen(ler sulcate petioles long) with ae ute hases and more numerous primary<br />
with the Ksheath inequilaterally auli(ulate at apex lateral veins (( a. 24 lel side, spae e(-l 1.5-2 ( m<br />
(an(l uxually ending well helow the l)ase of the apalt). Tn (ontraKst, L). killi/)ii has hla(lex that are<br />
l)la(le) an(l espe(ially ly the flequelltly Ksul)cor(late roundeel or sul)( or(3ate at the hase, ;an(l fewer than<br />
bladeKs (whie h dry yellowish green) with a flat- 15 primary lateral veins. It is also similar to D.<br />
raised mi(lrib. Also unuKsual for the sl)e(ies is the elelguellsi.s from the valley of the Rio Dagua in Valle<br />
near absenfe of a Ksterile portioll between the pis- Department, whie h similarly has staminate and l)istillate<br />
and staminate spadie es.<br />
tillate zones ( ontiguous on the spa(lix. That spee ies<br />
Dieffenb(lchiel killipii is similar to L). Ieo)oldii, eliffers in having larger hlades (to 40 c m long) with<br />
whieh waKs descIibed from a cultivate(l plant of un- many elose primary lateral veins (up to 25), an(l a<br />
known specific origin, believed to have been ob- petiole only 5 cm long.<br />
tained in Colombia. Engler saw living material of Dieffenbachia killipii is probably most easily<br />
this species and illustrated it in his 1915 revision. confused in Central America with D. isthmia, which<br />
While it has very similar leaves, D. Ieopoldii differs differs in having stems that dry usually blackened;<br />
from D. killipii in having the pistillate and stami- somewhat more ovate, blackened blades; and a spanate<br />
portion of the spadix separated by a sparsely dix with a more or less sterile portion between the<br />
flowered, almost sterile section. In addition, while staminate and pistillate portions. The species may<br />
the upper surface of D. killipii is semiglossy, D. also be confused with D. oerstedii from Costa Rica<br />
Ieopoldii is described as having a blade "velvety and western Panama. That species shares leaves of<br />
green" on the upper surface in the notes of N. E.<br />
Brown (on specimen of Lehmann 1052), at least<br />
similar shape and size, but it has blades that are<br />
matte, rather than semiglossy, on the upper surface<br />
suggesting that the upper surface was matte. Fi- and dry greenish or yellowish green. In addition,<br />
nally, the midrib of D. Ieopoldii is described as D. oerstedii has petioles that are typically more<br />
white, whereas this is not the case with D. killipii. sharply sulcate than those of D. killipii. The petiole<br />
Collections from the eastern slopes of the Andes base is green in D. killipii and whitish in D. oerin<br />
Napo Province, Ecuador, appear also to be this stedii. Furthermore, the spadix has staminate and<br />
species but more studies are needed to confirm this, pistillate portions nearly contiguous in D. killipii,<br />
as they would be the only collections of D. killipii but separated by a distinct sterile portion in D. oerin<br />
the Amazon basin. The collections include Croat stedll.<br />
723
724<br />
Annals of the<br />
Missouri Botanical Garden<br />
In Panama the ranges of D. oerstedii and D. Dil- at Rio Agua Salud, Croat 12353 (MO); Rio Frijol on Pipelipii<br />
do not actually overlap, but come close in Chi- line Rd., 6 m N of Gamboa, Tyson 1443 (FSU, MO, SCZ);<br />
Frijoles-Monte Lirio, Killip 12154 (US); N of Frijoles,<br />
riqui on the western slopes of the country. All Standley 27413 (US); W of the Canal, near Gatun, Stanknown<br />
collections there occur in the mountains at dley 27224 US); rd. S-10 N of Escobal near junction with<br />
900 to 1300 m. Dieffenbachia oerstedii occurs in Rd. S-1, Croat 12489 (MO); 1.5 mi. N of Escobal, Croat<br />
Panama in western Chiriquf Province at highland 12491 (MO, SCZ); near Limbo Gun Club camp, 10 mi. W<br />
of Gamboa on Pipeline Rd., Lazor & Tyson 3492 (FSU);<br />
sites and with an outlying population at E1 Cope in<br />
lake shore along Gatun River valley, Pittier 6845 (US);<br />
Cocle Province, while D. killipii ranges in general vic. Gamboa, Pittier 2600 (US); Pipeline Rd. N of Gamno<br />
further west than the Azuero Peninsula and Ver- boa, Kennedy 455 (F). Chiriqui: 8.8 km past Gualaca on<br />
aguas Province in Panama. There is an unusual rd. to Chiriquf Grande, Hoover 1324 (MO); Gualaca-Foroutlying<br />
population of D. killipii in the area of the tuna Dam site, 2.8 mi. beyond Los Planes, Croat 48816<br />
(MO); Cerro Colorado, 15.6 mi. above Ri) San Felix, Croat<br />
Osa Peninsula in Costa Rica (Kennedy 1594). A 48437 (MO). Cocle: E1 Limon, Merl(li(ta 1-10 (PMA),<br />
collection from Cerro Colorado (Croat 48437) in Mendieta 1-101 (PMA), Mendieta 1-121 (I'MA); vic. of E1<br />
Chiriqui Provin(e has blades slightly larger than Cope, PN E1 Cope, 5-6 mi. N of 191 (3ope, below Old<br />
most specimens of the species.<br />
Rivera saw works area, Croat & Zhu 76746 (CAS, DUKE,<br />
MO); 5 hours' walk N from Alto Calvalio to Rio Blanco,<br />
Croat 74785) from La Mesa in Cocle Province,<br />
Sytsma et al. 2414 (MO); La Mesa, al)ove E1 Valle de<br />
Panama, is unusual in having a series of rather Anton, Croat 14388 (MO), Croat 14X()(9 (MO); trail beyond<br />
prominent collee tive veins and in having the minor La Mesa towards Los Llanos and the l)ol(ler between Cocle<br />
veins distine t when fresh (typically they are rather and Panama Provinces, N of E1 Valle (It Anton, Luteyn<br />
obscure). It WilEe in fact, so unusual that it was ini-<br />
3175 (DUKE), Croat 37383 (MO); I ,(l Me sa above E1 Valle,<br />
Gentry 7423 (MO, NY); 5 mi. N ol El Valle de Anton<br />
tially mistakell for a Xanthosoma. It is, however, Luteyn 1203 (DUKE); La Mesa trail towtlt(ls Cerro Cara<br />
within the (legree of variation for D. killipii. coral, NE of E1 Valle de Anton, Lut(yl1 S/80 (DU1EtE); vic.<br />
Kress 77-8.X() and 77-831 from the vicinity of E1 Valle, Bartlett & Lasser 16678 (MlX,XlJ, MO); Penono-<br />
Santa Fe in Velaguas, Panama, are unusual collec- me-Coclecito, 5.6 mi. N of Llano Clallde, along Rio Cascajal<br />
5.6 mi. N of Llano Grande, 1.4 Illi. 1N of Cont. Ditions<br />
in havi1g the staminate and pistillate portions<br />
vide, Croat 67480 (MO, SCZ); at L.l Mesa! 3.2 mi. above<br />
of the spa(lix sie)arated by as much as 1 cm. In E1 Valle, 0.1 km E of Finca Macalelsita, Croat 74789<br />
this regard tlley are similar to D. Iutheri, but differ (MO), Croat 74792 (INB, MO, I'MA)* Ctl. I km W of rd.<br />
from that sl)e( ies in lacking the granular puberu- betw. Finca Mandarinas and Fin(l l7tlosr, Croat 67197<br />
lent major veills on the lower blade surface. (MO); area between Cano Blan(o (lel Norte, Cano Sucio<br />
and Chorro del Rio Tife, Davidse & llolll illon 23599 (MO);<br />
Some colle( tions of the species from Darien rd. to Coclesito, logging camp 12 1lsi. 1'l0lil Llano Grande,<br />
Province, Panama (e.g., Antonio & Hah77 4405, Churchill et al. 4032 (MO), Churallill (1 (tl. 4125 (MO), 7<br />
Duke 15591, lvolar7>co 1485, and Schmalzel 1212), km N of E1 Cope, near Rivera SawXlille /olsom & Collins<br />
are unusual in having petioles more fully sheathed, 6436 (MO); La Mesa, above E1 Valle (Je Ant6n, ca. 2 km<br />
W of Cerro Pil6n, Croat 37479 (M(), I'MA, WU); base of<br />
sometimes to less than 1 cm from the base of the<br />
Cerro Pil6n above E1 Valle, Gentry & I)ll1^ ( r 3643 (DUKE,<br />
blade or even with the petiole sheathed throughout. F, MO). Colon: PN Chagres, See( iols lJo(luer6n, Rio San<br />
The Costa ltican population of D. killipii is note- Juan de Pequeni, Espinosa et al. S()l l (I'MA), Espinosa<br />
worthy in that the single collection made there in & Guerra 3762 (PMA), Espinosa (t *X.l. 4478 (PMA); Dist.<br />
the Osa Peninsula is quite disjunct from the nearest Donoso, Campamento Botija, J. I' )le.leo et al. 1905<br />
(PMA); Rio Providencia, 12 mi. S ol (olorl, Tyson & Blum<br />
population in Panama, where the species has not 3954 (FSU, SCZ); Rio Guanche, betlwe X ls I'uerto Pil6n and<br />
been collecte(l west of Cocle Province. The species Portobelo, ca. 1.5 mi. S of rd., Cro(lt & %hu 76253 (MO,<br />
is to be expet ted at other sites in Veraguas and in PMA), Croat & Zhu 76259 (MO, XlX l,, S(2Z); lower Rio<br />
Chiriqui Prov i nce, Panama.<br />
Guanche, Dressler 4688 (PMA); N ol l{fo (Juanche, Dav-<br />
Etymology. The species is named in honor of<br />
idse & D7Arcy 10098 (MO); Rfo (,tlull( he, 3-5 km above<br />
bridge on Col6n-Portobelo Rd., Cro(lt 7(9329 (MO), Croat<br />
the late E. P. Killip, botanist at the U.S. National 79359 (MO), Sytsma 1658 (MO); rlear Peluca, km 25.6<br />
Herbarium and one of the more prodigious plant from Transisthmian Hwy. on rd. to Norrll)re de Dios, Kencollectors<br />
in the Neotropics, who was one of the nedy 2661 (MO); ca. 8 km E of Pina, Thompson 4816<br />
earliest collectors of this new species.<br />
(CM, MO); Portobelo-Nombre de Dios, 1.2 mi. beyond the<br />
jet. of rd. to Isla Grande, Croat 49805 (INB, MO); Nuevo<br />
Paratype.s. COSTA RICA. Puntarenas: Osa Penin- Tonosi-Rio Indio, Portobelo-Nombre de Dios, Croat 33551<br />
sula, 2.5 mi. SW of Rinc6n, Kennedy 1594 (MO). PAN-<br />
AMA. Bocas del Toro: Cerro de Bocatorito, Peterson &<br />
Annable 6768 (MO). Canal Area: 12 mi. S of Col6n, Tyson<br />
et al. 4486 (SCZ); 12 mi. S of Col6n, near Rio Providencia,<br />
Tyson & Blum 3997 (MO, SCZ); Pipeline Rd. 10<br />
mi. from Gamboa gate, Croat 15082 (DUKE, MO), ca. 7-<br />
8 km N of Gamboa, XKnapp 2275 (MO); Pipeline Rd. near<br />
(AAU, MO, QCNE); Achiote, McPherson 9176 (MO); Santa<br />
Rita ridge rd., ca. 22 km from transisthmian hwy., Hammel<br />
et al. 14472 (MO). Darien: Quebrada Biboto (Peccary)<br />
off Rio Areti, Duke 13601 (MO); 1-3 mi. N of Paya,<br />
Duke & XKirkbride 14019 (MO); Rio Cocalito, Whitefoord<br />
& Eddy 136 (BM, MEXU, MO); PN Cerro Pirre, vic. headquarters<br />
on Rio Perisenico, Croat & Zhu 77102 (COL,<br />
Gamboa, Clewell & Tyson 3306 (MO, SCZ); Pipeline Rd. HUA, INB, L, MO, NY, QCA, SCZ, TEFH, US, VEN);
Volume 91, Number 4<br />
2004<br />
Croat<br />
Revision of Dieffenbachia<br />
Paya-Pucro, Stern et al. 433 (GH, MO, US); Punta Guayabo<br />
Grando to Rio Jague, Antonio & Hahn 4405 (MO); 5<br />
of E1 ISlano-Carti Rd., Schatz 1079 (B, K, MO, US). Veraguas:<br />
rd. beyond Escuela Agricola Alto Piedra, NW of<br />
mi. W of Yaviza, Schmalzel 1212 (MO), Schmalzel & Al- Santa Fe, Pac. slope, 0.6 mi. beyond fork in rd., Croat<br />
verson 1199 (MO, PMA); vic. of gold mine at Cana, Croat<br />
37605 (HUA, INB, K, MO); S of E1 Real, headwaters of<br />
Rio Pirre at fork known as Dos Bocas, Kennedy & Foster<br />
395 (DUKE); Pinogana-Yaviza, lDuke 5169 (MO); 10 mi.<br />
49056 (MO); Escuela Agricultura above Santa Fe, Kress<br />
77-830 (DUKE), 77-831 (DUKE). COLOMBIA. Antioquia:<br />
Rio Anori valley, Quebrada La Tirana-Providencia,<br />
28 km SW of Zaragoza, Alverson et al. 376 (WIS). Choco:<br />
S of E1 Real on Rio Pirre, Duke 5437 (MO); trail from Rio Quibdo-Istmina, 6.6 km S of Quibdo, Croat & Cogollo<br />
Pucro to Quebrada Maskia, Duke 13082 (MO); Rio Tucuti 52174 (COL, MO); ca. 10-15 km S of Quibdo, and 8-10<br />
upstream ca. 2 hrs. (piragua) vic. Tucuti, Duke 5260 (MO); km E, Grayum et al. 7657 (MO); Sautata, PN de Los Ka-<br />
Punta Guayabo Grando-Rio Jaque, Antonio & Hahn 4406 tios, Renterza 10680 (HUA); Rio Atrato, Tagachi, Forero<br />
(MO); Cerro Canlpamento, S of Cerro Pirre, Duke 15591 et al. 9007 (COL); Bahia Solano, Corr. E1 Valle, Quebrada<br />
(US); Rancho Frio, halfway up slope of Cerro Pirre from<br />
Piji Vasal, Folsom 6247 (MO); gold mine at Cana, Sullivan<br />
745 (MO); Bajo Lepe, 7 km al SE of Boca de Cupe, Po-<br />
Tundo, tributary of Rio Valle, Espina et al. 2902 (MO);<br />
San Jose del Palmar, Rio Torito, Finca "Los Guaduales,"<br />
Forero et al. 6272 (COL), 6489 (COL). Tolima: Angostura<br />
lanco 1485 (PMA); base camp Cerro Pirre NP, Croat de Hondo (Magdalena), Lehmann s. n. (K). Valle: Bajo<br />
68961 (COL, MO, PMA); PN del Darien, RENARE sta- Calima Region, Buenaventura-Malaga, km 11, Croat<br />
tion, McDonagh et al. 433 (BM), 439 (BM, MO); Est. Biol. 69343 (CUVC, MO); Pulpapel Headquarters, Bay 278<br />
Rancho Frio at N base of Cerro Pirre, ca. 9 km S of E1 (MO); 5 km N of main Cali-Buenaventura Hwy., Croat &<br />
Real, Quebrada Perisenico, de Nevers et al. 8267 (CAS, Bay 75707 (MO); Cali, Vereda Pico de Aguila, Gamboa<br />
MO); Rio Coasi, Cana-Coasi trail, R. Hartman 12488 (K, et al. 71 (MO); Rio Dagua, Buenaventura, Lehmann 5311<br />
MO, PMA); Rio Pavarando, 10 km NE of Jaque, D7Arcy (K). ECUADOR. Cotopaxi: Guayacan-Montenegro, N of<br />
& Sytsma 14498 (MO); Rio Pirre, 2.5 nli. above E1 Real, Pucayacu, Croat 73792 (QCNE). Guayas: Cordillera<br />
Duke 5099 (MO); Rio Torti, 38.6 mi. E of Bayano Dam Chong6n-Colonehe, Cerro La Torre, Cornejo & Bonifaz<br />
Bridge, neal Torti, Antonio 4638 (MO); Rio Tuquesa, Cle- 3107 (GUAY). E1 Oro: ca. 11 km W of Pirlas on r(l. to<br />
zio 221 (MO), 226 (MO); Rlo Cllito, frorrl Yaviza at junc- Arenil las, Thompson 16() (MO); 7.6 km f l om Tahuin on<br />
tion with Rfo (2hucunaque to (a. 1 hl. I-vy outboar(l Irom<br />
jet., Burcll e/ *11. 1123 (DAV, M(), NY); (a. 1() krrl upstream<br />
Irorzl Na%areJtll, H(lArl /42? (1X, M()); Rfo Ja(luee Valley,<br />
K/l(l)/) & M(lll(l W()89 (M()); l{fo 13t11sas, Kllr.s(lr &<br />
ld. to 1'ie(3ras, 7'hom/).son 1E?8 (MO); Machala-l,oja, 25 kr<br />
AF: of jur( tiorl irl rd. to Pirlas, (,zro(lt T()72.T (M(), QCNIq,).<br />
Eslll+ralflas: (Leerro Mutilees, (,zornejo & Boni/(lz T1(31<br />
((,UAY); Saralo l)orlirgo (lee los (3olora(los-Esrzleeral(3as, t3()<br />
CSol(^^ 4 (S(iC), /.T (S(jXJ). Pallallla: I'irin-(2arasas trail kls NW ol Sarllo l)orlsirlgo, tS.tS krls NW ol ()uirlirs(lee ( ro(l.l.<br />
neear l'il ia, Olzke 14X4f) (M()); I1JI VAllE (Je Ma(Jrorlo-lJa T.ST4(J (M()); () krls beeyorlcJ l)i(lge oveer l{fo Estreral(las<br />
Savla, 2.S Illi. N 01 I1JI Valle (JeX Mtl(JIorlo ;3.S rlli. N 01 (11e11 Sarl Maleoe rcJ. to I1JSI}lPIAI(IAS ;II)OrI) (t1. ().() kGlL<br />
turrloll lo St1ll Jose, 1 1.6 ti. N ol 1 as Mal>arilas, vic.<br />
(2helasX valle y ol ltfo Marsolf, ('roo/ & %/Ill 77()48 ((JA%9<br />
IJI)I3 MI1JXlJ M()^ I)MA, NY SI1JI,, 'I I1JXE US); N ol'(Jatlil2e<br />
(Iro(l/ 14.S()4 (M()); (Jel'l'0 (Jaltll)til, 1'.5 kzl SW OF 1'1lllza<br />
Cily 0tL Ile-tXt. Hwy., Morz &^ lXol/esz 7698 (M()); (t1. I()<br />
lseyol(l Ulliv. Ieclll-l. I tliS VAlg(1S 'I'OIr(S-I1JXt. I1JXI). Mutile,<br />
l{fo Mlilee ('roo/ .SSeSL?(3 (IIUA M(), (v)(A, US); 11)ag1a-<br />
Sa,, I,oe >,o ,(0., Meleli.sot. ./. (ll. .S()()e (k', SkJIJ); Ha( if ,,(0tt<br />
(,lJaytls ( (1. 2?() kzl S Ol EJSI}lE lAI(LlS7 or/(r (/ ell. 4282 (M()); .ry & I,(orl(.s 7¢X1()8 ((,UAY, M()); lJilsn (,)lJillil(l-lJilSa,<br />
6.1 li. alxove lar-AIz. Hwy., 3.2 TL1i. I)eyor(J [)ark er- (,. 1 kzl W of filo. I)ol-zlin;,ro-lXJslzelul(0as Hwy., (0e)allil(r<br />
tIar(e & (,ua(Ja Ike 14346 (US);<br />
Cerro Jefe Region, vic. Finca Vega, 2.3 mi. above Lago<br />
Cerro Azul, 4.1 mi. above old Pan-Am. Hwy., Croat 75154<br />
tricia Pilar-24 de Mayo, Dodson et al. 8415 (MO); Rio<br />
Blanco, Santo Domingo-Esmeraldas havy., 3 km S of km<br />
24, Croat 50684 (MO); Santo Domingo de Los Colorados,<br />
(MO), Croat 11570 (F, MO, SCZ); Rio Maje, above first<br />
waterfall, Croat 34442 (F, MO, PMA); Rio Torti, S of Pan-<br />
Rancho Brahman, ca. 10 km NNZvT of Santo Domingo, Sparre<br />
14122 (S); Hacienda Zaracay, Sparre 15182 (S), Acosta<br />
am. Hwy. near village of Upper Torti, Folsom & Mauseth Solis 10896 (F, S); Tsachila Chiguilpe, Cer6n et al. 29159<br />
7844 (MO). San Blas: SW of Puerto Obaldia, Croat (QAP); Santo Domingo-Quevedo, km 11.5, Est. Gustavo<br />
16803 (MO); Ailigandi, Hammel & D'Arcy 5018 (MO), A. Orces, Quishpe & Davila 82 (QAP, QCNE); km 41, Zak<br />
Jones & Tejada 275 (PMA); Kuna Yala Nusigandi FS, NW et al. 5726 (QCA); vic. of Montalvo, 40 km E of Babahoyo,<br />
725
726 Annals of the<br />
Missouri Botanical Garden<br />
Holm-Nielsen et al. 2769 (AAU, NY, Q(:NE, S)7 Hacienda wide), 1-2 times longer than petioles, coriaceous to<br />
Monica, 12 km E of San Carlos, Sparre 19397 (S); Haci- subcoriaceous, semiglossy, bicolorous, weakly inenda<br />
Clementina, Harling 313 (S); Babahoyo-Montalve,<br />
Sparre 14556 (S), Cornejo & Bonifaz 4828 (GUAY, MO); equilateral, one side 0.6-3.5 cm wider than the oth-<br />
Centro Cientifico Rio Palenque, Croat 38669 (MO, er, usually short-acuminate at apex, sometimes<br />
QCNE), Dodso7l & Tan 5338 (SEL), Croat 73826 (MO, acute to rounded with a short acumen, acute to<br />
QCNE), Croat 50655 (MO), Fallen & Ray 860 (SEL); rounded at base, with the edges turned up near the<br />
Quevedo, Asplund 15574 (S)7 Dodson 6188 (RPSC, SEL);<br />
Vinces, Mocachi-Palenque, Jauneche forest, km 70 Quevbase;<br />
upper surface dark green, drying gray-green<br />
edo-Palenque, via Mocachi, Dodson et al 10594 (GUAY, to dark olive-green, rarely yellowish brown; lower<br />
MO, SFL). Manabi: Portoviejo-Pichincha rd., ca. 20 km surface slightly paler, drying yellowish green, rarely<br />
E of San Placido, Harling & Andersson 24778 (GB, MO); yellowish brown7 midrib flat, 1-2 cm wide at base,<br />
Cerro Montecristo, S of Manta, Sparre 19488 (S); Mach- concolorous or slightly paler than surface above,<br />
alilla NP, zona de San Sebastian, Gentry et al. 72496 (MO,<br />
QCNE); Chone-Santo Domingo Rd., ca. 20 km NNE of drying slightly paler than surface and weakly raised<br />
Flavio Alfaro, Montanas de Convento, Harling & Anders- above, concave to prominently raised on lower surson<br />
18898 (GB); Hacienda Don Juan, 10 km NE of Jama,<br />
N of Rio Don Juan, Neill et al 11683 (QCNE); 223 km S<br />
of Pedernales, 3.5 km SW of Camarones, I)elinlss 452<br />
(AAU, NY, MO). Napo: Auca, Plowman 14121 (F). Pastaza:<br />
Coca-Rio Tiguino, t35.23 km S of Coca, Croat 72573<br />
(MO). Pichincha: vic. Hotel Tinalandia, 9.6 km E of Santo<br />
Domingo de los Colorados, Croat 55666 (GUAY, MO,<br />
QCA); Machachi-Santo Domingo, 19.3 km E of Alluriquin,<br />
Thompson & Rawlins 1104 (MO); Centinela, Montanas<br />
de Ila, 12 km E of Patricia Pilar, L0jtnant & Molau<br />
15839 (AAU); Santo Domingo-Quevedo, Patricia Pilar,<br />
face, drying brownish; primary lateral veins 15 to<br />
26 pairs, sunken above, convex below, arisin; at an<br />
acute angle to the midrib then spreading at an angle<br />
of 45°-60°(70°), sometimes to 90° near the base<br />
of the blade, sometimes drying moderately wrinkled;<br />
interprimary veins lacking or 1 between each<br />
pair of primary lateral veins, sometimes almost as<br />
prominent as the primary lateral veinsS minor veins<br />
indistinct Juvenile telades with acute base and sol-<br />
Dodson et al. 14638 (M0, QCNE), Gentry et al. 26709 id green midrib. INFI,ORESCENCES 1 to 3 per<br />
(MO); vic. of Santo Domingo de Los Colorados, Peripa, axil; peduncles (5.5)7-25 x 1.5-2 cm; spathe<br />
SW of Santo Domingo, Croat & Nunez 82064 (MO,<br />
QCNE); Nanegalito-Pto. Quito Rd. km 113, ENDESA, 5<br />
medium to dark greerl broadly curved, long-acukm<br />
W of San Vincente Andoas, Croat 82829 (MO), Croat minate, 2748 cm long, 2.5-8.2 times longer than<br />
et al. 83795 (MO); Rfo Silanche, Quito-Pto. Quito, km peduncle, to 4 cm wi({e at anthesis, tube flattenin;<br />
113, Rodriguez 262 (NY, QCA); Santo Domingo-Quininde 5-12.5 cm wide, oorlstlicted area 2.5-3 cm diam.,<br />
rd., km 41, Zak et al. 5414 (QCA); vic. Maquipuquna<br />
flattening 3.2-5 ( m wide, spathe blade 3-6 cm<br />
Res., rd. to Maquipucuna Lodge, LSeimbeck R. 306 (AAU).<br />
Sucumbios: Lago Agrio-Baeza, ca. km 107, Croat 50480 wide at anthesis, flattening to 6-12 cm wide mid-<br />
(MO). VENEZUELA. Maiquetia, Andre 457 (K). way, the distal inner surface sometimes white when<br />
Cultivated specimens. Ecuador. Napo: Auca Oil Field, open; spadix (21)35-38 cm long; free portion 12-<br />
23 Sep. 1991, Ingram 1124 (MO).<br />
19 cm long; pistillate portion of spadix (except<br />
sometimes the uppermost part) fused to spathe 13-<br />
16. Dieffenbachia longispatha Engl. & K.<br />
15 cm long; fertile s;taminate portion (8)11-14 cm<br />
Krause, Pflanzenr. IV, 23 Dc(Heft 64): 44.<br />
x (9)12-14 mm ((3rying 6-9 mm diam.); mostly<br />
1915. TYPE: Panama. Colon: Fato (Nombre de<br />
sterile intermediate portion (2)3-4.3 cm long with<br />
Dios), July 1911, H. F: Pittier 3838 (holotype,<br />
a few scattered staminodia in the upper half (some-<br />
US!; isotypes, B!, F!, M0!). Figures 16, 29B.<br />
times to throughout ite; length); pistillate flowers 10<br />
Terrestrial, (1)1.5-3.5 m tall; sap very foul and to 26, round or barely bilobed, widely spaced 5-<br />
pungent; stem prostrate at base, then erect; inter- 10(20) mm apart, forming in a single irregular row<br />
nodes 4-12 cm diam., with leaf scars prominent, or scattered but usually no more than 2 flowers<br />
dark green, semiglossy, drying dark brown to or- across the width of the spadix (rarely 3); ovaries<br />
ange-brown; petioles thick and succulent, semiglos- pale green, 4-7 mm diam.; stigmas 4-6 mm diam.,<br />
sy, usually solid dark green, rarely streaked with yellow to orange, somewhat broadly bowl-shaped,<br />
pale green, 23-55 cm long (averaging 36 cm long), 5-7 mm thick on the edge, medially with 1 to 2<br />
sheathed to about middle (0.58-0.85 their length, somewhat elongate lobes, the lobes 1-1.5 mm<br />
averaging 0.72); sheath 25X1 cm long (averaging diam., somewhat longer than broad; staminodia 5<br />
25 cm long), inequilaterally rounded at apex, some- to 6 per pistil, white, irregular, 2-6 x 2-3 mm,<br />
times weakly free-ending; unsheathed portion 4.0- much flattened at base, less so toward the apex,<br />
30.5 cm long (averaging about 11 cm), C-shaped often somewhat puckered at the apex; synandria in<br />
and obtusely sulcate or + terete with a faint flat spirals of 4 to 7 each, 3-4 mm wide, subrounded,<br />
rib adaxially; blades oblong-elliptic, 41-72 x 17- drying light yellow-brown and concave at apex. IN-<br />
38 cm (averaging 53 x 24 cm), 1.7-2.9 times lon- F1lUCTESCENCES 17-24 cm long; berries 1.5-2<br />
ger than wide (averaging 2.3 times longer than cm diam., often deeply emarginate at both ends and
Volume 91, Number 4<br />
2004<br />
Croat<br />
Revision of Dieffenbachia<br />
Figure 16. Diedfenbachia longispatha. A. Habit with open inflorescence. B. Plant habit with cluster of inflorescences.<br />
C. Crown of plant with close-up of leaf base with open inflorescence. D. Inflorescence at anthesis with<br />
staminate spadix exposed. A, C. (Croat & Zhu 76257); B, D. (Croat & Zhu 76203).<br />
727
728<br />
Annals of the<br />
Missouri Botanical Garden<br />
appearing to be a double fruit, bright yellow to or- comm.). Dieffenbachia longispatha and D. nitidiange,<br />
mesocarp ca. 2 mm thick, soft, sweet and petiolata do not occur together in Costa Rica since<br />
tasty at maturity; seeds oblong, 7-8 mm diam., D. Iongispatha barely crosses west of the Panama<br />
brown to black, smooth.<br />
Canal. In eastern Panama D. Iongispatha is found<br />
principally in areas of Tropical moist forest (T-mf)<br />
Distribution and habitat. Dieffenbachia longis- near E1 Real.<br />
patha ranges from central Panama to northern Co- Smaller plants of D. Iongispatha may also be<br />
lombia, mostly from sea level to 180 m, but perhaps confused with D. crebripistillata. In addition to beto<br />
250 m (owing to a collection at Rio Tuquesa with ing a plant of smaller stature (rarely to 1.3 m tall),<br />
no elevation reported), occurring in Tropical moist it has more fully sheathed petioles (often to the<br />
(T-mf), Prernontane wet (P-wf), and Tropical wet for- base of the blade and sometimes overlapping the<br />
est (T-wf) life zones (Holdridge, 1967). In Panama blade) that usually have a whitish band abaxially<br />
it occurs on both coasts, but it is relatively rare on and dry conspicuously yellow or orange-brown (vs.<br />
the Pacific slope.<br />
green for D. Iongispath(l). In addition, D. crebripis-<br />
Phenology. While collections of D. Iongispatha tillata differs in having smaller spathes (to 28 cm)<br />
have been ma(le in both flower and fruit year-round, with the pistils closely aggregated on the spadix,<br />
flowering OcCUIs y)rincipally during the first half of with (57)80 to 100 pistils versus 10 to 26 for D.<br />
the rainy season between June and August, while Iongispatha. Finally, though there may be a certain<br />
fruits mature throughout much of the dry season overlap in their ranges in areas along the Atlantic<br />
and the first liall' of the rainy season, especially coast in Colon Provine e! D. crebripistillata generally<br />
from Februaly to September.<br />
occurs at higher elevatiollst mostly 250 to 975 m.<br />
Discussion. I)iegenbachia longispatha grows<br />
most frequently .llong streams, in deposits of sedi- Additional specimens e.w-(l lr1itled. PANAMA. Bocas<br />
ment along lak s in standing water, but also in del Toro: 1.5 km N ol Ll Cluta, Peterson 6405 (US).<br />
Canal Area: Barro Co l ox tIdo I s l and, Armour Trail 2000,<br />
deep soil in tl( lorest understory. Frequerltly it is<br />
Croat 11321 (F, MO, US): Btlll)our Trail 225, Croat 6471<br />
found solitary ol irl small clusters. While the spe- (MO); Barbour Trail 2()()* C/-eelt 7/36 (MO); Drayton Trail,<br />
cies may colollize it is typically much less ( olonial near end, Croat 5767 (M()); Dlayton Trail 1610, Croat<br />
than other sl)e( ies in Panama and Coloml)ia, such 5761 (MO); Lake Trail, Cro(lt 6276 (MO, SCZ); Oppenas<br />
D. isthmia, 1). oerstedii7 or D. killipii.<br />
heirner 67-1-3-1244 (M()); Miller Trail 300, Croat 4095<br />
(MO); Miller trail 1400,<br />
The species is; characterized by its usually tall<br />
(Xlro(/t 17394A (MO); Miller Trail<br />
1375, Croat 7455 (MO); I'(llson Trail 400, Croat 4134<br />
((1)1.5-3.5 nl lligh) and robust stem (usually 6-12 (MO); Snyder-Molino Tltlil, (XOat 6192 (MO); Van Tyne<br />
cm diam.), an(l ly the petiole being inconspicu- Trail, Stimson 5277 (DUKI,* STRI); Wheeler Trail 300,<br />
ously sheathe(l and decurrent at the apex with a Croat 4125 (MO); Zetek 'I'ltlil 500, Fuertes Cove, Croat<br />
long subterete Iree portion beneath the bla(le, this 5259 (MO), Croat 6409 (M()); ().6 mi. N of Gamboa near<br />
Rio Frijol, Tyson 1438 (M()); vi(. Curundu Housing area<br />
drying charae teristically olive-green or dark larown. of Albrook Air Force bas^, I'alque Metropolitano, Croat<br />
Perhaps most ( haracteristic of D. Iongispatha are & Zhu 76203 (AAU, (E l{, M ( ), US); Gatun Locks-Fort<br />
the widely scattered, moderately sparse and very Sherman, 1 mi. E of Foll fils^lman, Croat & Zhu 76266<br />
(MO, US); Rio Grande-Pe (llo Vidal, rd. to Arraijan, large pistils all(l the usually long spathe. Dieffen-<br />
Pittier<br />
bachia longi.s/)atha is typically one of the tallest<br />
2715 (US); near Fort l
Volume 91, Number 4<br />
2004<br />
0.9-1.7 cm wider than the other, weakly to narrow-<br />
ly acuminate to acute and apiculate at apex, round-<br />
ed and usually inequilateral, sometimes acute and<br />
decurrent on the petiole at base, moderately un-<br />
dulate along the margins, moderately coriaceous to<br />
subcoriaceousX very dark green and semiglossy to<br />
weakly glossy above, sometimes mottled in a band<br />
along the midrib (especially heavy on one side be-<br />
low the middle) with yellow-green to cream above,<br />
drying dark gray-brown to dark brown and matte to<br />
weakly glossy above, slightly to moderately paler<br />
and weakly glossy to matte below, drying yellow-<br />
Croat<br />
Revision of Dieffenbachia<br />
Llano-Cartl Rd., near border with San Blas Province,<br />
Croat 67399A (MO); Rfo TapiaX Standley 26156 (US),<br />
Standley 28238 (US). San Blas: E of Puerto Obaldia,<br />
Croat 16923 (MO). COLOMBIA. Antioquia: San Luis,<br />
Guillernio & Cardenas L. 863 (HUA, JAUM). Choco:<br />
Acandi, Rio Cuti, Corr. Unguia, Roniero-Castaneda 6436<br />
(COL); Nuqui, Corr. Arusi, vic. Arusi, Rio Arusi, Croat &<br />
M. Mora 83777 (= Mora 394) (MO). Meta: PN Natural<br />
Tinigua, Serrania Chamusa, Centro de Investigaciones Primatologicas<br />
La Macarena, Camp Colombia Stevenson 379<br />
(COL).<br />
green, weakly glossy; rnidrib slightly flat-raised,<br />
concolorous and 4-5 mm wide, weakly ribbed and<br />
rmedially sulcate above, narrowly rounded and<br />
slightly paler below, drying flat-raised and slightly<br />
darker yellow-brown above; primary lateral veins 14<br />
to 16 per side, arising at an acute angle, then<br />
spreading at 25°-70° angle (25°-45° angle toward<br />
the apex, 65°-70° toward the base), weakly quiltedsunken<br />
to narrowly sunken and concolorous, sometimes<br />
in weak valleys above, darker and convex to<br />
17. Dieffenbachia lutheri Croat, sp. nov. TYPE: round-raised, minutely granular-puberulent to sca-<br />
Panama. Chiriqui: along border of Bocas del bridulous below, drying weakly and narrowly<br />
Toro Province, Cerro Colorado, above mine, raised, concolorous above, irregularly angular and<br />
1600 m, originally collected by Luther et al., yellow-brown below; minor veins on upper surface<br />
cultivated at Marie Selby Botanical Gardens in part weakly etched, concolorous, those on the<br />
(acc. #86-0873), 4 Oct. 1991, S. 1E Ingram lower surface moderately obscure to easily visible,<br />
1146 (holotypeX MO-4224350!; isotypes, B!, darker than surface; lower surface densely pale-<br />
COL!, K!, MEXU!, PMA!, SEL-065912!, US!). spotted, the spots regularly rounded and evenly<br />
Figures 17, 27B.<br />
spaced. INFLORESCENCE 1 per axil; peduncle 4-<br />
Planta 0.6-1.5 m alta; internodia brevia, 2.0-2.4 cm<br />
diam.; petiolus 23 cm longus, vaginatus ().7 lorlgitudinis;<br />
lamina anguste ovata, (24)27-34 ( m longa, 14-1 5 em latcl,<br />
6 cm long, 1 cm diam., drying dark yellow-brown,<br />
3.5-8 mm wide; spathe pale green on botll surfaces,<br />
white near tip, acuminate at apex, 16.5-20.S cm<br />
nervis primclliis lateralibus 14-16 utroque; inflores(enti<br />
1 per axillatn; pedunculus 4-6 (m longus, 1 (rn (ticlm.;<br />
spclthcl pcllli(le viridis, 16.t5-2().tS ( ltl lorlgcl.<br />
long, flattenecl to 3.5 ( m wide on tube, drying yellowish<br />
l)rown; sl)(l(li-x 14-20 ( m long (ine lu(ling 1-<br />
1.tS (m long sti^)e); istillate ortion of sI)a(}ix 7.()-<br />
HerT), ().6-1.5 m tall; say) not srrlelling of oxali( 7.t3 ( m x 8-9 rnrrl, ( om)letely ( ontiguous with staa(id;<br />
i71tUrl7.0(les short, to 2 (nl long, 2.()-2.4 (m minate )ortion or nearly so; starninate lsor tion of<br />
liam., (lark green an(l semiglossy, (Irying Illatte an(l syxa(lix 5. 3-8 ( rn x 5-9 rnm on (Irying, with the<br />
t)laekene(l; /)etioles ea. 2tS ( m long, (lark greell an(l renlnants of lhi(ke-le(l the(ae visilvle along u^)y)er<br />
weakly glossy, smooth or with fine, of)S( ure lines on margills; ^islils 55 to 6(, 2 to 4 or tllem in a sy)iral<br />
fresh matelial, sheathe(l ().7 their lengthe (Irying ae loss the wi(lth of the slea(lix, soliletililes mo(lel-<br />
(lark olive-gray towal d l)ase, somewllat yel lowish ately s)arsely sI)ae e(Se (Iryilly sonletimes ^)romibrown<br />
toward apex; sheath ae ute on one si(le at nently ('OllVeX an(l the I)istils thus visilvle fronl lsoth<br />
apex, the other side narrowly loun(Se(l at al)ex, with to) an(l si(le views; pistils 1.4-2.3 mm wide; stigt)oth<br />
si(les c onfluent, the sheath mal gins (Irying mas pale yellow, 1.f3-l.7 mm diam., drying with<br />
thin, pale brown, the innel surface of the sheath short, mostly ae ute, mostly ereet strigose tric homes;<br />
pale yellow-green and very glossy, drying light yel- staminodia 2-3 mlll long, 1.0-1.6 mm wide, marklow-brown,<br />
much paler than the outer surface; free edly thiekened at the apex, sometimes broader than<br />
portion of the petiole oval to sharply C-shaped in long, white, drying yellow-brown; synan(lria creamy<br />
cross section, 7 cm long, sharply sulcate to flat- white, drying irregularly rounded to angular, 0.5tened<br />
with sharply ridged margins; blades narrowly 3.0 mm wide, yellow-brown, the apex sunken on<br />
ovate, (24)27-34 x 14-15 cm, 1.9-2.2(2.7) times drying, mediuln yellow-browll with pale, rounded,<br />
longer than wide, slightly inequilateral, one side cellular inclusions. Berries not seen.<br />
729<br />
Distribution and habitat. DieJ2fenbachia lutheri<br />
is apparently endemic to the region of Cerro Colorado<br />
in Chiriqui and Bocas del Toro Provinces at<br />
1390 to 1600 m in the Lower rnontane rain forest<br />
(LM-rf) life zone (Holdridge, 1967).<br />
Phenology. A flowering collection was made in<br />
Panama, and the species has flowered in cultivation<br />
in October at the Marie Selby Botanical Gardens.<br />
Discussion. The species is most similar to D.<br />
Iongispatha in having a considerable portion of the<br />
petiole unsheatlled and obtusely sulcate; the sheatl
730 Annals of the<br />
Missouri Botanical Garden<br />
Figure 17. Dieffenbachia<br />
lutheri. A. Habit of potted plant. B. Plant habit with inflorescence. C. Close-up<br />
of stem showing petiole sheath and sulcate petioles. D. Close-up of inflorescence.
Volume 91, Number 4<br />
2004<br />
Croat<br />
Revision of Dieffenbachia<br />
acute at the apex; and a blade of generally similar matte, moderately smooth; petiole scars 4-5 mm<br />
shape and dried color. It differs from D. Iongispatha thick. LEAVES erect-spreading, clustered at apex<br />
in occurring at a much higher elevation (1390- of stem; petioles 1344 cm long (averaging 28 4 cm<br />
1600 m vs. 180 m), in having the staminate and long), 1-1.5 cm diam. midway, sheathed 0.3-0.76<br />
pistillate portions of the spadix contiguous (sepa- their length (averaging 0.48), very glossy as if varrated<br />
by a conspicuous, mostly sterile portion in D. nished, rarely only semiglossy, dark green, drying<br />
Iongispatha), and in having a spathe that is much orange-brown to blackened; sheath 14-34 cm long<br />
shorter (to 20.5 cm vs. 27-48 cm).<br />
(averaging 14.3 cm long), erect to involute, acute<br />
Diefenbachia lutheri is also similar to D. killipii and decurrent (but sometimes weakly elevated) at<br />
and even shares with that species the contiguous apex; the unsheathed portion 5-22 cm long (averpistillate<br />
and staminate portions of the spadix. It aging 13.4 cm long), usually terete to C-shaped,<br />
differs from D. killipii, however, in having the major sometimes obtusely and narrowly to broadly sulcate<br />
veins on the lower surface granular-puberulent or V-sulcate, rarely D-shaped; blades oblong-elliprather<br />
than glabrous.<br />
tic to oblong-lanceolate, or ovate-elliptic, gradually<br />
Dief7nenbachia lutheri might be confused with an- acuminate to acute, equilateral to inequilateral at<br />
other high-elevation species, D. crebripistillata, but apex, usually only weakly inequilateral with one<br />
that species occurs only up to 950 m, lower than side 0.3-1.5 cm wider (but can be up to 3.5 cm<br />
D. Iutheri, and differs in having a fully sheathed wider) than the other, acute to obtuse or rounded<br />
petiole that dries yellow-brown. Diefenbachia luth- at base, usually equilateral, sometimes inequilatereri<br />
has a petiole that dries dark gray and is un- al with one side acute and the other rounded, 19sheathed<br />
for more than 5 cm at apex.<br />
59 x 7-27.5 cm (averaging 38 x 12.6 cm), 2.1-<br />
Etymology. The species is named in honor of 4.8 times longer than wide, broadest usually at<br />
botanist Harry Luther from the Marie Selby Botan- middle, 0.7-2.4 times longer than petiole (averagical<br />
Gardens, Sarasota, Florida, who collected liv- ing 1.38 times longer than petiole), subcoriaceous<br />
ing material of the type species.<br />
to thinly coriaceous, moderately to weakly bicolo-<br />
Paratypes. PANAMA. Bocas del Toro: Cerro Colorado,<br />
9.2 mi. W of Chame, Croat 69070 (MO). Chiriqui:<br />
Cerro Colora(So, 18.6 mi. N of Rio San Felix, 6.6 mi. beyond<br />
Chame, Croat 7ti007 MO); 34.1 km of Rio San Felix,<br />
Croat 37268 (M0).<br />
rous; margin sometimes weakly undulate; upper<br />
surface dark green and glossy to semiglossy, plain<br />
green or rarely weakly variegated with pale green<br />
in some areas or throughout much of the blade,<br />
sometimes plain green with just the midrib whitened,<br />
drying gray-green; lower surface moderately<br />
18. Dieffenbachia nitidipetiolata Croat & Gra- paler, matte to weakly glossy, drying yellow-green;<br />
yum, sp. nov. TYPE: Panama. Bocas del Toro: midrib + flattened (slightly sunken toward base),<br />
Valle del Silencio, along Rfo Changuinola, ca. concolorous or slightly paler, sometimes white<br />
1 km above mouth of Rio Teribe, vic. Teribe above, convex or bluntly acute below, drying pale<br />
Indian population, disturbed forest among co- yellow-brown often with a medial ridge on drying;<br />
coa plantations, 9°21'40"N, 82°31'40"W, 100 primary lateral veins (10)12 to 20(22) per side, dem,<br />
25 June 1994, 7: B. Croat &: G. Zhu 76449 parting midrib at 20°40°(55°) angle on narrower<br />
(holotype, MO-04614032-33!; isotypes, AAU!, leaves (especially in Panama), often to 70°-85° an-<br />
B!, CAS!, COL!, CR!, F!, GH!, INB!, K!, gle on broader blades (mostly in Costa Rica), weak-<br />
MEXU!, NY!, PMA!, US!). Figures 18, 30A. ly arcuate-ascending, weakly sunken above, weakly<br />
Planta 50-75(120) cm alta; internodia 0.7-1.5 cm lon- convex and slightly paler below; minor veins visiga,<br />
1.5-2.5(4.0) cm diam.; petiolus 13-44 cm longus, va- ble, not prominent below. INFLORESCENCES<br />
ginatus 0.3-0. 76 longitudinis; vagina 14-34 cm longa, mostly 1 to 5 per axil; bracts 2-ribbed throughout;<br />
acuta ad apicem; pars libera 5-22 cm longa; lamina obpeduncles<br />
11-18(24) cm long, 0.9-1.3 cm diam.,<br />
longo-elliptica vel oblongo-lanceolata vel ovato-elliptica,<br />
19-59 cm longa, 7-27.5 cm lata, nervis primariis later- somewhat flattened, medium green, semiglossy;<br />
alibus (10)12-20(22) utroque; inflorescentia 1-5 in spathe 15-36 cm long, 1.3-2 times longer than pequoque<br />
axilla; pedunculus 11-18(24) cm longus; spatha<br />
15-36 cm longa; spadix 13-29 cm longus; pistilla 48-<br />
60(79).<br />
duncle, uniformly pale green to greenish white or<br />
greenish cream, becoming pale yellow post-anthesis,<br />
semiglossy to matte outside, slightly paler and<br />
Herb, 50-75(120) cm tall; sap moderately foul- glossy within, spathe tube 2-2.9 cm diam., flattensmelling;<br />
stems erect or partially reclining; inter- ing to 8-9 cm wide, weakly constricted above the<br />
nodes 0.7-1.5 cm long, 1.5-2.5(4.0) cm diam., tube to 1.7 cm diam., the constricted area to 5 cm<br />
glossy to semiglossy, dark green to medium green, wide when flattened, narrowly acuminate at apex;<br />
smooth, drying dark brown to light yellow-brown, spathe blade 2.5-3.5 cm wide at anthesis, flatten-<br />
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Annals of the<br />
Missouri Botanical Garden<br />
Figure 18. Dieffenbachia nitidipetiolata. A. Habit. B. Close-up of leaves, adaxial surface. C. Close-up of<br />
crown of plant showing newly opened leaf and inflorescence. D. Opened inflorescence exposing spadix. AX B. (Grayun<br />
3218); CX D. (Croat 76942).
Volume 91, Number 4<br />
2004<br />
Croat<br />
Revision of Dieffenbachia<br />
ing to (3.7)4.5-5.7 cm wide midway; spadix 13-29 cies differs in having a minutely granular upper<br />
cm long, ca. 1-9 cm shorter than the spathe; the surface, a matte-drying lower midrib with promifree<br />
portion 11-16 cm long; fertile staminate por- nent raphide cells (vs. drying glossy without raphtion<br />
5.7-10.5 cm x 6-11 mm, slightly broader at ide cells), and matte-drying petioles (vs. drying<br />
middle, gradually tapering toward both ends, blunt- glossy).<br />
ly rounded at apex; male flowers 4 to 6 per spiral, In the Rio Guanche area of Colon Province, Pansubrounded<br />
to hexagonal, sometimes depressed ama, the species may be hybridizing with D. cremedially,<br />
the margins irregularly and smoothly in- bripistillata since both species occur along the Rio<br />
dented; pistillate portion 5.5-14 cm long, 11-15 Guanche and in the Santa Rita area further inland<br />
mm diam., extending down to the very base of the and at higher elevations. Some plants have the free<br />
spathe; pistils 48 to 60(79) globose, green, to 2.5- portion of the petiole over half its length on aver-<br />
3 mm diam., moderately closely spaced except age, which is characteristic of D. nitidipetiolata<br />
sometimes in uppermost 1 cm (the distance be- (but not of D. crebripistillata), yet the free portion<br />
tween them generally equaling or up to twice their is not notably glossy as is usually the case for D.<br />
width), usually to 3 per spiral or 4 to 6 in an arch nitidipetiolata. Examples of these collections are<br />
across the width of the spadix; stigma yellow, de- McPherson & Merello 8235 from Santa Rita Ridge<br />
pressed-globose, simple; staminodia 3 to 5 per flow- and Thompson 4874 from Rio Guanche. The Mcer,<br />
clavate, white, 2-6 mm long, up to 2 times lon- Pherson and Merello collection also describes the<br />
ger than pistil, somewhat flattened and mostly petiole as having a white streak on the abaxial surcontiguous<br />
at base (sometimes united in pairs), face, a feature otherwise known only in D. crebrisometimes<br />
slightly thickened and somewhat puck- pistillata.<br />
ered at apex, drying orange; staminate portion interrupted<br />
from piKstillate portion by a + naked por- P(lrfityl)es. C()S'rA RICA. Alajuela: -34 km beyond<br />
tion, 2.tS-4.S c m x 5-9 mm with a few Ksterile San l4aril6n 1)eyond l jos Angeles, I,llteyn W@8.T (l)UKIS);<br />
llo(lt. 4.X36)8 (M()); (,lJcililo-(,ual)i<br />
lees 14(l., A(lrritlMevr 2416) (t''). Hereflia: 1, Xeelneal<br />
sea level to 12()() m in wettel palts of Trol)ic<br />
va at Xalul)i(lili, llT7l()ll.()Z 1()3 (M()); 1, X,011 Plole(lola<br />
moi.st foresl ( 1 -mf), Premont(lrle wet /orest (P-wf), Rio (,rU('ililO, (,r(zl-lllzl & ks(&h(ltz .X218 (I)U Ktg); La Selva,<br />
Tro/)ie(ll wet forest (T-wf), an(1 Premontarle rairl /or- ()'1'S tX'ieel(l Aluliorl orl ttlee Rfo Puello Viejo, E of its jcnl.<br />
est (P-rf) 1ife zones (Holdli(lge, 1967).<br />
wiltl ttle>. ttfo SaIal)iqui, Ctro(lt 442.S4 (M()), H(lltlmel 8123<br />
Phenology. Dief/erl b(lchi(l niti(lil)etiol(lt(l flow-<br />
(I)UKt, tX', M()), Burger & kSXtolze .57.53 (tX', (,,t), Fol.som<br />
92()() (I)U Ktg), H(ltnmel 1()()82 (I)UKIS), Beflch 14tSb<br />
ers principally at the beginning of the lainy season (l)UKIS), Beflch 1439 (DUKIi, MO), M(lcL)ougal 1()27<br />
(June-September), but also as early as March and (DUKIL), Jitzzezzez 1()3 (MO); Rio Salapi(lui, 2 km S of San<br />
as late as October, with the heaviest flowering ap- Miguel, Lent 37 (tX'); Sarapiqui, Croat 44307 (MO), Grapalently<br />
in August. Fruitillg collectiolls 11ave been yum. 2225 (DUKE, MO); San Jose and Pto. Viejo, vie. of<br />
Chilamante, 11.6 mi. N of Cariblanco, Croat 68379 (MO).<br />
made from May through January.<br />
Limon: Hitoy Cerere reserve, SW of Valle lga Estrella,<br />
Discussion. The species is characterized by its along Rfo Cerere to ca. 1 km upstream from Quebrada<br />
long, glossy petioles with the unsheathed portion Barrera, Grayum & Hammel 5785 (MO); Res. Biol. Hitoy<br />
being moderately elongate, 0.7-0.24 cm of their Cerere, Valle de la Estrella, trail to Cerro Bob6cara, G.<br />
length, and which dry glossy as though varnished, Herrera 4116 (CR, MO); N of Quebrada E1 Molinete, Rfo<br />
Chirrip6-Rfo Corinto, Grayum & Jacobs 3524 (MO); Ref.<br />
and by the moderately closely spaced pistils. It is Nac. Barra del Colorado, Rfo Chirrip6cito-Rfo Sardina,<br />
most easily confused with D. Iongispatha, differing Grayum 9844 (CR, MO); Rfo Catarata, Burger et al. 1()323<br />
from that species in having the pistils much smaller (F, MO, SEL); BriBri-Rfo Sixaola, Rfo Catarata, Burger &<br />
and aggregated and from D. crebripistillata in hav- Antonio 1()9()5 (F, MO, PMA); BriBri-Caribbean coast,<br />
Croat 43217 (MO). Puntarenas: E of Monteverde on the<br />
ing the petiole almost unsheathed (vs. sheathed<br />
Pacific watershed, Burger et al. 1()699 (MO); Palmar Normostly<br />
to the apex in D. crebripistillata). The spe- te-Panamerican border, 3 km N of turn-off to Rinc6n,<br />
cies may be confused with D. hammelii. That spe- Croat & O. Hannon 79199 (INB, MO, US). San Jose:<br />
733
734 Annals of the<br />
Missouri Botanical Garden<br />
Vazquez de Coronado, Braulio Carrillo NP, along Hwy. San km SW of Pato, Croat 56070 (CHOCO, MO); Rio Condoto-<br />
Jose to Siquirres, trail to Rio Sucio, site of the Old Carillo Rio San Juan, Killip 35113 (COL, US); Alto de Buey, Gen-<br />
Station, Croat 78788 (IBE, INB, MO, WU). NICARA- try & Forero 7342 (COL, MO); Bahia Solano, Puerto Mu-<br />
GUA. Zelaya: Cano Montecristo, E of Campamento Ger- tis, Gentry & Forero 7217 (COL, MO); Bahia Solano, Croat<br />
man Pomares, P. Moreno & J. Sandino 15160 (MO); Rio 57462 (CHOCO, COL, MO); N of Bahia Solano, Cerro<br />
Punta Gorda, Atlanta, "La Richard," 200 m SE, Moreno Mecana, Juncosa 1795 (MO); Mecana, Quebrada Resa-<br />
& Sandino 12976 (MO). PANAMA. Bocas del Toro: Rio quita, Juncosa 1898 (MO), 1912 (MO); Rio San Juan,<br />
San Pedro7 Gordon 55C (MO); Santa Catalina7 4 Dec. Noanama, Forero et al. 4571 (COL); Rio Bicordo7 tributary<br />
19677 Blackwell et al. 2704 (COL7 MO7 UC); Chiriqui La- of Rio San Juan7 Noanama7 Forero et al. 4659 (COL)<br />
goon area, Cocoa Cay, von Wedel 2892 (COL, F, MO, UC); Acandi, Quebrada Sardi, E1 Paramo, Roldan et al. 1199<br />
above RR stop at Milla 7.5, Croat & Porter 16303 (MO) (HUA, MO); Corr. San Francisco, Vereda Coquital, sitio<br />
Croat & Porter 16412 (MO), Croat 38120 (HUA, INB, E1 Paramo, Quebrada Zardi, Betancur et al. 1177 (HUA);<br />
MO, UB, VEN), Croat & Porter 16375 (MO); Chiriqui Vereda Coquital, Fonnegra et al. 2899 (HUA, NY), 2907<br />
Grande-Fortuna, 7.7 mi. S of Chiriqui Grande, 1.5 m W (HUA, NY); Nuqui, Corregimiento Arusi, vic. of Arusi,<br />
of Punta Pena, Croat & Grayam 6()116 (MO), Akers 78 Est. Biol. E1 Amargal, Croat & Mora 83652 (= Mora 27())<br />
(MO); IRHE vic., Carrasquilla & Mendoza 1239 (MO, (MO); Corr. Arusi, Est. Biol.. E1 Amargal, Mora 170<br />
PMA); Almirante-Ojo de Agua, 3-6 km W of Almirante, (COL). ECUADOR. Esmeraldas: Zapallo Grande, Rio<br />
Croat 38229 (F, MO, PMA); about 10 mi. W of Veraguas Cayapa, Barfod et al. 48348 (AAU); Lita-San Lorenzo Rd.,<br />
border, McPherson 11401 (CM, MO); Valle del Silencio, 0.9 km E of E1 Durango, 19.8 km W of Alto Tambo, Croat<br />
along Rio Changuinola, ca. 1 km above mouth of Rio Ter- et al. 82520 (MO); Playa de Oro7 1 km from Rio Santiago7<br />
ibe, vic. Teribe Indian population, Croat & Zhu 76422 Ceron & J. Corozo 33858 (QAP), 33947 (QAP), Ceron &<br />
(INB, MO, WU); Cocoa Cay, vic. of Chiriqui Lagoon, von J. Corozo 34097 (QAP); San Lorenzo-Mataje, departing<br />
Wedel 2892 (F); Rio Teribe, vic Teribe II, IRHE, Carras- main Lita-San Lorenzo Hwy., 11.6 km N of Gasolinera<br />
quilla 2005 (PMA); Changuinola-Tuibe Rivers, Zigla Rd., San Lorenzo, 2.9 km W of main Lita-San Lorenzo Hwy.,<br />
Lazor et al. 2578 (MO); limit trail of Par. Intl. La Amistad, Croat et al. 84041 (AAU, B, CAS, COL, DUKE, G, K, M,<br />
from Quebrada Boca Chica to Quebrada Bonyic, Polanco MO, NY, P, UB, US, WU); Cotacachi Cayapas, San Mi-<br />
1591 (PMA). Chiriqui: Fortuna Lake Area, 3.4 km N of guel, Rio Cayapas, Sector Loma Linda, Tipflz et al. 2280<br />
Quebrada Chorro, 1.6 mi. N of center of bridge over lake, (MO, QCNE); Rio Cayapa, Zapallo Grande, Barfod et al.<br />
Croat 74958 (MO); vic. Fortuna Dam, McPherson 9829 48154 (AAU, MO); Zapallo Grande, Kvist et al. 48348<br />
(MO); Quebrada Los Chorros-Quebrada Hondo, N of For- (AAU, QCA); Rfo Cayapa, Zapallo Grande, Kvist & Asanza<br />
tuna Lake, Churchill & Churchill 6105 (MO); Fortuna- 40756 (AAU); Rio Grande, at Zapallo Grande, Barfod &<br />
Chiriqui Grande, 0.7 mi. NW of center of dam, Croat & Skov 60101 (AAU); Rio San Miguel, upstream from Pueb-<br />
Zhu 76482 (INB, MO, PMA); trail from rd. near Forestry lo Cayapas, Holm-Nielsen et al. 25355 (AAU); San Lor-<br />
Nursery to Rio Hornito, Thompson 5028 (CM). Cocle: enzo, Sparre 18326 (S). Morona-Santiago: Santiago-Mo-<br />
Cont. Divide, N of Penonome on rd. to Coclesito, Hammel rona, Rio Morona, 23.4 km E of Santiago, Croat 87448<br />
4049 (MO). Colon: Santa Rita Ridge rd., ca. 8 mi. E of (MO, QCNE).<br />
Transisthmian Hwy., McPherson & Merello 8235 (MO);<br />
Santa Rita Ridge Rd., ca. 1 hr. walk from end of rd.,<br />
Antonio 4488 (MO); Santa Rita Ridge Rd. 6.5 mi. E of 1 9. Dieffenbachia obscurinervia Croat, sp.<br />
Boyd-Roosevelt Hwy., Croat & Zhu 76942 (CR, GOET nov. TYPE: Panama. San Blas: trail from dock<br />
GUAT, HUA, INPA, ISC, LE, MO, PMA TEFH, UB, to airport to village of Cangandi, 9°24'N,<br />
WISC); Puerto Pilon-Portobelo, Rfo Guanche, ca. 1.5 mi. 79°24'W, 3-30 m, 26 Mar. 1986, G. de Nevers,<br />
S of rd., Croat & Zhu 76254 (MO, PMA); Rio Guanche,<br />
3-5 km above bridge, Croat 79348 (B, INB, MEXU, MO, H. Herrera & S. Charnley 7409 (holotype, M0-<br />
US), Sytsma 1695 (MO); 3-7 km above bridge, Hammel 3475792!; isotypes, B!, US!). Figures 19, 29A.<br />
et al. 4882 (MO); ca. 3 km above bridge, Croat 49761<br />
(MO); Santa Rita-Serra Llorona, Galdames et al. 1138 Planta 0.8-1.5 m; internodia brevia, (1)3 1(5) cm lon-<br />
(STRI); Rio Iguanita, Croat 49768 (MO). Darien: W side ga, 1.5-2.5(3) cm diam.; petiolus 8-12 ( m longus, vaginof<br />
Cerro Pirre, Croat 68854 (MO); Rio Tuquesa, ca. 2 km atus ad medium vel ad apicem; lamina anguste elliptica,<br />
air distance from Cont. Divide, near upper gold mining 20-30 cm longa, 5-8 cm lata; inflorescentia 1-3 per axcamp<br />
of Tyler Kittredge, Croat 27161 (MO); Serrania de illam; pedunculus (1.7)3-5 cm longus; spatha 11.5-20 cm<br />
Pirre, Rio Cana-Rio Escucha Ruido, above Cana Gold longa; spadix 10-18 cm longa, cum parte F)istillata 5-5.5<br />
Mine, Croat 37746 (MO). Panama: E1 Llano-Carti Rd., cm longa.<br />
near border with Province of San Blas, Croat 67379A<br />
(MO). San Blas: Comarca de Kunayala, Nusigandi, E1 Slender herb, 0.8-1.5 m tall, stem decumbent on<br />
Llano-Carti Rd., 10.1 mi. N of Inter-am. Hwy., then ca. older parts, weakly rooted, leaf scars inconspicu-<br />
0.5 mi. N Paseo Mariska, Croat & Zhu 77023 (MO); SE ous; internodes glossy, (1)3-4(5) cm long, 1.5of<br />
Puerto Obaldia, Croat 16769A (MO); trail from dock to<br />
airport to village of Cangandi, de Nevers et al. 7407 (MO,<br />
2.5(3) cm diam., dark green, epidermis fissured mi-<br />
PMA); E1 Llano-Carti Rd. km 16.7, trail W to waterfall 5 nutely into a netlike reticulum becoming uniformly<br />
km from rd., de Nevers & S. Charnley 5898 (MO, PMA); fissured and brown-scurfy with age; petioles 8-12<br />
Canagangi, de Nevers et al. 5727 (MO). Veraguas: Boca cm long, averaging 10.6 cm long, sheathing 1/2 to<br />
de Concepcion, in Golfo de los Mosquitos, McPherson throughout (average 0.8 their length), light green or<br />
11381 (MO). COLOMBIA. Antioquia: Mutata, Corr. Longani,<br />
Callejas et al. 5601 (HUA). Choco: trail from Rio yellow-green with the surface dark green-splotched<br />
Mecana to Alto de Mecana, Gentry & Juncosa 41037 or dark green with white or yellow spots (sometimes<br />
(MO); Serrania de Baudo, Las Animas-Pato, Rio Pato, 10 with spots forming a repeated series of irregular
Volume 91, Number 4<br />
2004<br />
Croat<br />
Revision of Dieffenbachia<br />
0d --<br />
Figure 19. Diegenbachia obscurinervia. A7 B. (Croat 12660). A. Cluster of several potted plants with plant on<br />
left with open inflorescence. B. Close-up of crown of plant showing adaxial and abaxial surfaces and inflorescence<br />
at anthesis. C. Close-up of stem showing mottled epidermis and speckled petioles (Croat 61234).<br />
inflorescence showing both pistillate and staminate portions of spadix (Croat 13849).<br />
D. Close-up of<br />
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736 Annals of the<br />
Missouri Botanical Garden<br />
bands); sheath 6.7-10 cm long, the tip usually Cocle) to northern Colombia (Antioquia and Choco)<br />
rounded to inequilaterally emarginate, rarely de- from 30 to 800 m in Tropical rnoistforest (T-mf) and<br />
current, frequently with one side emarginate and Tropical wet forest (T-wf) life zones (Holdridge,<br />
with the other side acute; unsheathed portion lack- 1967).<br />
ing or to 5.2 cm long, sharply to bluntly sulcate; Phenology. The species has been seen in flowblades<br />
narrowly elliptic, 20-30 cm long (averaging er from May to December and fruiting collections<br />
24 cm long), 5-8 cm wide (averaging 7.5 cm wide), have been reported from from September to May.<br />
2.4-5.2 times longer than wide, 1.6-3.1 times lon- Discussion. Dieffenbachia obscurinervia is charger<br />
than petiole, slightly inequilateral, one side acterized by its scurfy brown internodes, conspic-<br />
0.7-1 cm wi(ler than the other side, subcoriaceous, uously splotched petioles, and narrow blades with<br />
weakly bie olol ous, gradually acuminate, briefly apic- weakly developed primary lateral veins. It is not<br />
ulate at al)ex, {lequently somewhat falcate, cuneate easily confused with any other species but was into<br />
obtuse ol X ounded, often weakly inequilateral, correctly called D. pittieri, a species considered rerarely<br />
weakly sube ordate at base, upper surface dark stricted to the Isthmus of Panama, for many years.<br />
green, semit,lossy, drying dark yellow-green to dark See that species for a discussion of the differences.<br />
olive-greels; lowel surface slightly to moderately paler,<br />
drying yellow-green, midrib slightly raised to flat<br />
above, con( ololous, drying concolorous above, convex<br />
to narlowly rounded below, dark green, densely<br />
Paratypes. PANAMA. Canal Area: Pipeline Rd.7 mi.<br />
1-37 N of GarYlboa7 S. Knapp 1042 (MO); Pipeline Rd. at<br />
Rio Agua Salud7 Croat 12352A (MO); Barro Colorado Island7<br />
Armour 'I'rail 12807 Croat 8623 (MO); Drayton Trail<br />
pale yellowish green-spotted, drying paler than sur- 10007 Croat /2660 (MO); Drayton 19107 Croat 6775 (MO7<br />
STRI); Draytoll 1490, Croat 5759 (M()). Cocle: vic. E1<br />
face or datket than surface below; primary lateral<br />
Valle de AntI)ll, La Mesa7 Finca Maarenita7 Croat & Zhu<br />
veins 10 to 13 I)er side, weakly etched above, weak- 76666A (M ( )* I'MA). Colon: Santa Rita Ridge7 Croat<br />
ly raised or llot at all raised below; the interprimary 13849 (MO); Nombre de Dios7 Cro(lt t57.X29 (MO); Cocle<br />
veins alnsost as conspicuous as primary lateral del Norte7 ZI(lrnmel 4484 (MO); I'ollofelo-Nombre de<br />
Dios7 1.2 lzli. I)eyond jet. of rd. lo Isla Grande7 Croat<br />
veins, milsor veins moderately distinct below. IN-<br />
49791 (M()7 I'MA); Rio Guanche7 (,. .S kln upstream from<br />
FLORES(E , N (E IiS 1 to 3 per axil; peduncle (1.7)3- rd. to Portobeloe Hammel & Train(r /4786 (MO); Loma<br />
5 cm longe somewhat flattened in cross section; de la GloliaF near Fato (Nombre (le l)ios)7 Pittier 3847<br />
spathe 11.5-2() c m long, 3.2-9.5 times longer than (US). Panalll.'l: Balboa West7 Za/l(lt(l (t (ll. 289 (PMA);<br />
peduncle, (lark green or pale green throughout, along trail ol'l' I,larlo-Carti Rd.7 4.6 rrli. from jet. with Pancaudate-ae<br />
lllninate, sometimes sharply reflexed below<br />
apex, .V)adix 10-18 cm long; free portion 5-9<br />
cm long; pistillate portion 5-5.5 cm long; sterile<br />
Am. Hwy.7 M(l'l1(rson & Merello 8/4.S (MO). San Blas:<br />
Rio Cangandl (2angandi7 H. Herrer(l 245 (MO7 PMA); Nusigandi7<br />
alotlg ll Llano-Carti Rd.7 ().7 km beyond Cuna<br />
headquarterst 11.6 km from Pan-Am. Hwy.7 Croat 75149<br />
segment less than 1 cm long, 6 mm diam., with (KS MO). C()l,()MBIA. Antioquia: Slo Anorl valley7 near<br />
scattered staminodia throughout; pistils 20 to 40,<br />
moderately ( losely spaced, scattered, 2-2.6 mm<br />
diam.; stigma depressed-globose, 2 mm diam., staminodia<br />
white, usually 3 per pistil, 1.5-2(3.4) mm<br />
Planta Provi(lell( ia7 Shepherd 438 (M(), WIS); Anori7 Corr.<br />
Prov.7 Soejart(l & Renteria 3556 (HUA); %aragoza7 Rio Anori7<br />
Quebra(ltl l, 'rirana-Rio Anori7 2 km N of Quebrada<br />
La Tirana7 3 k lll ll priver from Planta Providencia7 Alverson<br />
et al. 283 (C()l,); Carepa7 Tulenapa Reserva (ICA)7 Turbolong,<br />
flattene(l, oblong to clavate, grooved medially, Mutata7 40 kzl S of Turbo7 Callejas et al. 4873 (MO7 NY).<br />
Choco: Nu(ltlt, Quebrada Chaqui7 Galeano et al. 4825<br />
drying flattened, thickened at apex; synandria ir-<br />
(MO); Quibddx, l, Concepcion7 15 km E of Quibdo7 Archer<br />
regularly rounded with margins undulate, minutely 2215 (US); Cor(loba7 Tierralta7 Rio Esmeraldas-Rio Simi7<br />
warty, widely sunken at apex, 1.8-2.6 mm diam., 2 km above ( orlfluence7 Bernal et al. 1158 (COL).<br />
dark yellow-brown, matte on drying. INFRUC-<br />
TESCENCE broadly arching; spathe mostly decid- 20. Dieffenbachia oerstedii Schott, Oesterr.<br />
uous; spadix to 8 cm long; berries red, broadly el- Bot. Z. 8: 179. 1858. TYPE: Guatemala. Agualipsoid,<br />
to 1.5 cm long, less than 1 cm diam. cate, A. S. Oersted s.n. (holotype, C!). Figures<br />
Common name. Abior (Kuna) (de Nevers et al.<br />
20, 29A.<br />
7409).<br />
Herb, 30-75(100) cm tall (usually less than 50<br />
Distribution and habitat. Dieffenbachia obscu- cm); stem erect or partially reclining, often conrinervia<br />
ranges from central Panama (as far west as spicuously clustered with numerous plants; sap<br />
Figure 20. Dieffenbachia oerstedii. A. Potted plant with inflorescences and leaves with mottled blades (Croat<br />
68449). B. Potted flowering plant with pale midribs (Croat & Zhu 76794). C. Leaves and post-anthesis inflorescence<br />
showing ovate-lanceolate blades with scarcely sunken primary lateral veins (Croat 63208A).-D. Close-up of
Volume 91, Number 4<br />
2004<br />
Croat<br />
Revision of Dieffenbachia<br />
Figure 20. (Continued) stems showing the free-ending petiole sheath (Croat 36297). EX F. (Croat 68449). E.<br />
Flowering plant with open inflorescences. F. Close-up of flowering plant showing open spathe blade and exposed<br />
stamlnate portlon of inflorescences.<br />
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Annals of the<br />
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moderately foul; leaf scars conspicuous, transverse veins" sometimes visible. INFLORESCENCES 1 to<br />
or oblique (when oblique, up to 2x as wide on one 2 sometimes 3, rarely 4 per axil; peduncle (2.2)3.5side<br />
as the other), forming a T or forming a W on 12(22) cm long (average 7.6 cm long), l/lo as long<br />
open side of sheath; internodes semiglossy to glossy, as spathe to fully as long as the spathe, averaging<br />
weakly warty on magnification, 1-5.T cm long, 0.8- 0.43 as long, 6-13 mm diam., 2-4 mm diam. on<br />
2(3) cm diam., dark olive-green to blackish green, drying, somewhat flattened in cross section; spathe<br />
medium green or dark green, sometimes variegated (7.5)10-17(25.5) cm long, weakly constricted above<br />
with streaks of paler green, drying dark brown to tube, medium green on both surfaces, sometimes<br />
dark yellow-brown, glossy, smooth; petioles 10- tinged whitish on back throughout (the median rib<br />
20(.30) cm lollg, (averaging 13.7 cm long), 3-4 mm green), weakly glossy to semiglossy outside, glossy<br />
diam., sheathing 1/3 to 3/4 (rarely nearly throughout) on inside, narrowly acuminate at apex; tube to 2-<br />
their length (avelaging 0.7 their length), medium 2.8 cm wide, 1.5-2.3 cm thick when furled, to 8<br />
green, matte, sometimes finely streaked throughout cm wide when flattened; spathe blade to 2.5 cm<br />
with darker green, usually weakly glossy and white diam. when furled, 3.0-8 cm wide at anthesis; spanear<br />
base; sheath 2.5-21.5 cm long (averaging 9.3 dix (7)10-17(21) cm long (averaging 14.6 cm), 1-<br />
cm long), pale green to white on lowermost clasping 5 cm shortel than spathe; pistillate portion 4.3portion<br />
(contl asting sharply with much darker 7.5(10) cm long (averaging 6.4 cm long), 5-10 mm<br />
stem), with margins involute, the tip with one side diam.; fertile staminate portion 3-8.5 cm long (averect,<br />
free-ending and rounded to auriculate, with eraging .5..3 ( m long), 5-7 mm diam., broadest at<br />
the other side rounded to acute (sometimes not free- middle, tapeling toward both ends, especially at<br />
ending in Coe le Province, Panama); unsheathed<br />
bluntly y)oi llted apex; mostly steri le intermediate<br />
portion 5-1.S (m long, C-shaped to U-shaped in<br />
segment (1)2-3.2 cm long, to 2.5 mm diam. (dried),<br />
cross section, ( onvex adaxially, acute to bluntly anwith<br />
a few u i(lely scattered stel ile staminate flowers<br />
gled on margills; I)leldes ovate to narrowly ovate or<br />
in uppel 3/4 clnd a few pistillate flowers in lower 1/4,<br />
ovate-lanceolate or rarely oblanceolate, (5.5)14sometime.s<br />
with only sterile stanlillate flowers scat-<br />
22(35) x (1.7)4-14(21.5) cm, (averaging 20.1 x<br />
tered thlotlt,llout, rarely almost l)ale; pistils (26)33-<br />
8.5 cm), 1.4-5.9 tilileS longer than wide (averaging<br />
46(54), lo(lerately closely spat e(l except in the<br />
2.5 times longer than wide), 0.8-2.7 times longer<br />
lower 1..S em and the upper ] (m (the distance<br />
than petiole (avel aging 1.5), often inequilateral,<br />
between theln generally equaling or twice their<br />
somewhat thinly ( oriaceous to subcoriaceous, moderately<br />
bicolorous, gradually acuminate and apicwidth),<br />
uS to 4 in a row across tlle width of the<br />
ulate at apex (the acumen 5 mm long), acute and<br />
spadix, subt,lobose, 1.5 x 1.4-2.6 mm; stigma deweakly<br />
decurrent to obtuse or more often rounded,<br />
pressed-globoseX yellow, 1 mm wide, puberulent;<br />
sometimes subcordate at base; upper surface matte<br />
style cavitolln with a weak central dome; staminoand<br />
subvelvety to weakly glossy, dark green, fre- dia clavate, white, drying orange, 2-3(4.5) mm<br />
quently splot(hed light or medium green or with long, 1-2 nlm wide at apex, 2-3 times longer than<br />
white areas especially near midrib (all variations pistil, usually weakly fused at base, sometimes well<br />
frequently found in a single population), drying separate(l? weakly flattened, thickened toward apex;<br />
dark brown to gray-green, concolorous, sometimes synandria 3 to 5 per spiral, 1.4-2.0 mm diam., the<br />
faintly dark-stliate; lower surface matte to weakly margins slllooth to irregularly and smoothly inglossy<br />
(epidermal cells raised and sometimes trans- dented, smooth and subrounded at apex. INFRUClucent),<br />
drying yellow-green to yellow-brown, some- TESCENCE to 22 cm long; spathe orange outside;<br />
times faintly dark-striate, slightly paler; rnidrib flat- berries bright red, globose, with 13 to 43 per spadix,<br />
raised to obtusely flat-raised above, concolorous or 4-6 mm diam.<br />
sometimes white above (sometimes mottled on<br />
plants with mottled leaves, sometimes faintly dark- Distribution and habitat. Dieffenbachia oerstestriate<br />
on both surfaces), slightly paler and convex dii ranges from Mexico (Veracruz, Oaxaca, Chiapas,<br />
to broadly convex to bluntly acute below; prirnary and Tabasco) mostly along the Caribbean slope in<br />
lateral veins (4)6 to 9(11) per side, departing midrib Central America in Guatemala, Honduras, Nicaraat<br />
a 40°-45° angle, broadly arcuate-ascending, gua, and Costa Rica (where it occurs on both<br />
sunken to quilted-sunken above, slightly darker slopes) and west-central Panama. The species also<br />
than surface, weakly convex-pleated below; inter- occurs on the Pacific slope of E1 Salvador (Depart-<br />
1<br />
primary velns weaK or as consplcuous as prlmary ment of Ahuachapan). The species ranges from sea<br />
lateral veins; minor veins indistinct above, moder- level to 1260 m in Tropical dry (T-df), Tropical rnoist<br />
ately distinct to moderately obscure below; "cross- (T-mf), Tropical wet (T-wf), Prernontane wet (P-wf),
Volume 91, Number 4<br />
2004<br />
Croat<br />
Revision of Dieffenbachia<br />
and Prernontane rain forest (P-rf) life zones (Hold- averaging 14 cm long (sheathed 0.48-0.9 the petridge,<br />
1967).<br />
iole length). In contrast, plants from Heredia Prov-<br />
Phenology. Flowering of D. oerstedii occurs ince in Costa Rica are smaller than average with<br />
throughout the year, but with the heaviest flowering blades averaging 13.9 cm long and 5 cm wide (2.9<br />
at the end of the dry season and the first part of times longer than wide).<br />
the rainy season, April to September. Fruit matu- The distribution of Dieffenbachia oerstedii in Panration<br />
is more regularly scattered throughout the ama is apparently disjunct with some collections<br />
year.<br />
known from far western Panama, but the species also<br />
Discussion. This species is characterized by its occurs in the vicinity of E1 Cope and La Mesa in<br />
small stature (generally less than 1 m tall); fre- Cocle Province. The populations in E1 Cope have<br />
quently clustered stems; and sharply C-shaped pet- somewhat smaller leaves (9.5-15 cm long), but differ<br />
ioles that are whitish at the base and sheathed only slightly from those in Costa Rica. The E1 Cope<br />
mostly 1/3_3/4 their length, with the sheath obscurely material is otherwise morphologically identical to<br />
free-ending and inequilateral with at least one side populations of DP oerstedii such as those found at La<br />
usually merely rounded or acute rather than auric- Selva in northern Costa Rica.<br />
ulate. Also characteristic are the moderately thin, The petiole sheath of the Cocle populations is<br />
usually small, + ovate-lanceolate blades, which are merely rounded on one side and acute on the other<br />
generally acute to rounded or truncate basally and (vs. auriculate on one side and rounded on the othmatte<br />
or only weakly glossy adaxially.<br />
er side for typical material of D. oerstedii). In ad-<br />
Dief77enbachia oerstedii is the most widespread dition, the midrib is not faintly striate on both surand<br />
ecologically variable species in Central Amer- faces as is usually the case with typical D. oerstedii.<br />
ica. It is extremely malleable in terms of leaf size, The petiole scars are much more oblique than usual<br />
leaf blade shape, and markings, with different with the internodes longer on one side of the stem<br />
blade coloration types (cf. Fig. 20A, B) all found than on the other (vs. more nearly perpendicular to<br />
within the same population. For example, in pop- the stem with the internodes of equal width on both<br />
ulations at Rio Grande de Taracoles at Carara in sides of the stem for typical D. oerstedii). Despite<br />
Costa Rica (0-200 m), the plants of this species the strong morphological similarities, plants from<br />
are robust. The populations of D. oerstedii at 1400 Cocle Province, Panama, differ markedly in their<br />
m in Braulio Carillo National Park (also Costa Rica) ecological requirements. Cultivated plants, for exhave<br />
small anel delivate leaves. In Costa Rica, the ample, will survive well only in an area of nearly<br />
leaf blades tend to be matte or only weakly glossy 100% humidity. Alternatively, the Costa Rican maon<br />
the upper surface. However, elsewhere in Cen- terial from Heredia does very well in the drier parts<br />
tral America the blades are often more glossy. A of the greenhouse.<br />
collection from E1 Salvador (Selby 77-3()78) has In Mexico, Dieffenbachia oerstedii may be conblades<br />
that are initially rather glossy on the upper fused with D. wendlandii since they have similar<br />
surface and weakly glossy on the lower surface (al- leaf blades. Living material of the latter is easily<br />
beit soon turning only weakly glossy above). Plants separated in having petioles with the free portion<br />
in Panama and Costa Rica have blades 2-11 cm terete or obtusely and weakly sulcate (vs. sharply<br />
wide and acute to rounded at the base, whereas in C-shaped and sulcate in D. oerstedii), the base solid<br />
other parts of Central America from Nicaragua to green, and in having the sheath decurrent at the<br />
Mexico the blades are often 14-18 cm wide with apex with one margin overlapping the other (vs.<br />
subcordate leaf bases.<br />
rolled in from both sides in D. oerstedii, with both<br />
Standley (1937) considered Dieffienbachia leopol- sides visible and often protruded at apex and the<br />
dii (Bull. Catal. 1878) similar to or synonymous with sides inequilaterally rounded to auriculate) Com-<br />
D. oerstedii, but the type specimen indicates that it pared with D. oerstedii, D. wendlandii is typically<br />
was actually collected in Colombia, where D. oerste- a larger plant with longer stems, thicker internodes,<br />
dii does not range. 'The species is actually closer to and larger leaves up to 33 cm long and 9.5-15 cm<br />
D. killipii (see discussion under D. killipii). wide, and with the midrib 1.2-1.4 cm wide (vs. 5-<br />
Collections from Mexico and Belize are larger on 6 mm wide for D. oerstedii). In addition, D. wenaverage<br />
than those in Panama, Costa Rica, and dlandii has the stigma bowl-shaped at anthesis with<br />
Nicaragua, with blades 16.5-35 cm long and 6- a protruded central dome. In contrast, the stigma<br />
16.5 cm wide (averaging 23 x 11 cm). Petioles for of D. oerstedii is cushion-shaped.<br />
the same area range from 8.5 to 30 cm long, about Diegenbachia oerstedii is similar to D. killipii in<br />
as long as the blades to 1.7 times longer than the general blade shape and size as well as in often<br />
blade with the sheath from 7.5 to 21.5 cm long,<br />
having the 66flat-raised" upper midrib, but D. killipii<br />
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Annals of the<br />
Missouri Botanical Garden<br />
often differs in having petioles not at all whitish at Additional specimens seen. BELIZE. E1 Dorado,<br />
the base, blades which are typically semiglossy (vs.<br />
Schipp 386 (F, GH, K, MO, NY); Caves Branch, halfway<br />
up St. Herman's Hill, Whitefoord 1176 (BM, MO); Cayo,<br />
matte and subvelvety to weakly glossy in D. oerste- Stann Creek Districts, Hummingbird Hwy., betw. mi. 25dii),<br />
and especially in having the spadix with the 34, Dwyer & Diecknian 13008 (MO); Vaca Plateau, Vaca<br />
pistillate and staminate portions nearly contiguous Falls, Balick et al. 2080 (MO); Stann Creek, Cockscomb<br />
rather than well separated.<br />
Basin, Jaguar Pres., 10 km W of Maya Center, off S Hwy.,<br />
Balick et al. 2716 (MO); Toledo, vic. of trail to Esperanza<br />
Herbarium material of Dieffenbachia oerstedii beginning 1 mi. N of Columbia Forest Station, Vanderveen<br />
may be confuse(l with D. seguine from the West 590 (MO); Columbia For. Stat., Dwyer 9920 (MO); San<br />
Indies. Both x,oee ies sometimes have blades of sim- Jose trail to Esperanza 1 mi. N of Columbia Forest Station,<br />
ilar shape, an(l lenth have petioles that are com- Croat 24250 (MO); San Jose, 6.T rlli. N of Columbia Forest<br />
Station, Dwyer 11184 (F); Bladen, ttichardson Creek, afparably<br />
sheatlle(l and sharply C-shaped on the free fluent of Bladen Branch, lower ptlt-t of Maya Mountains,<br />
portion. The lwo sI)ecies differ in stature, with D. Davidse & Brant 31879 (MO); alorlg Bladen Branch from<br />
Oerstedii beirlg IsUe h smaller and with blades matte, Richardson Creek to Quebrada (le Oro, Davidse & Brant<br />
often subvelvely, whereas those of D. seguine are at 32366 (MEXU, MO); Bladen, Solornon Camp, vic. of the<br />
jet. of Richardson Creek and 131a(len Branch, foothills of<br />
a minimum weakly glossy on the upper surface. The the Maya Mountains, Davidse & lXrant 32410 (MEXU,<br />
auricles on tle fIee-ending sheath of D. seguine are MO); Bladen, Bladen Nature Rexelve, ca. 2 air km N of<br />
both rounde(l al tlle apex, whereas in D. oerstedii upper Bladen Branch, Davidse 3.S$S02 (BRH, MO, SEL);<br />
one of the si({es of the sheath is almost rounded at Bladen Res., Ek Xux archaeolor,i( bll site, Davidse & Holst<br />
36041 (MO, MY); upper Bladels 13ltlnch basin, along main<br />
apex and the otle! is usually acute at apex. How- Bladen Canyon, Davidse & Hollelll(l 36505 (BRH, MO);<br />
ever, the sheall, llsat subtend inflorescences in D. Columbia Res. near Crique N( rtot Whitefoord 3284 (BR,<br />
Oerstedii may 1sas e the apex auriculate on both MO). COSTA RICA. Alajuela: I (lr,tlna Hule, NE of Cerro<br />
Congo, Luteyn 3342 (DUIkE). > sides.<br />
(IIlz.l)ert & Rogerson 619<br />
(A); canyon of Rio Cariblan(o (XX(l W slope and summit<br />
The tyl)e loctllily of Dieffenbachia oerstedii col- of ridge between Rio Cariblars( o (XX(l Quebrada Quicuyal,<br />
lected by ()e lst (l lemains in doubt but it may be SW of Cariblanco, GrayunI et (ll. f)/S)4 (MO); 3 km N of<br />
from Gualerzlll. 'I'he type specimen contains only La Luisa and 15 km N of Gteeia. !llfllr/)hy & Jacobs 1289<br />
(DUKE, MO); San Carlos, Hal(l^ (t the name ''ScXsgtlisillo'' on the label. Also penciled<br />
Hel 1799 (MO);<br />
Cordillera de Tilaran, San Ralssols-Bajo Rodriguez, vic. La<br />
on the label ix llse name "Aguacato," perhaps add- Balsa, 8.9 mi. NW of centel ol Sals l4am6n, Croat 68069<br />
ed at a latel (|lle. Engler (1915: 15) cited a col- (CR, K, MO); 10 km N of }3ija¢zla, Croat 36473 (DUKE,<br />
lection ma(le ly ()ersted from "Schottige Berwalder F, INB, MO); Upala, Brasilia l.r) kzl S of town, Finca de<br />
des Berges Aguae ate" (perhaps Cerro Aguacate in Mario Jir6n, Herrera 1636 (lNI3. M()); 22 km NE of Quesada<br />
by air, 4 km W of Muellx Stlls Carlos, Liesner 14102<br />
Sierra de las Minas). He also listed "sanquinello" (MO); 22 km NE of Quesad;l l)y ait; 4 km W of Muelle<br />
(Engler, 191.5: 1 S) as a common name for D. oer- San Carlos, Liesner 14155 (13, K, M()); 2 km N of Santa<br />
stedii (note the (lifference in spelling from that orig- Rosa, Liesner et al 15035 (13. Ml'aXU, MO); Cant6n de<br />
inal label).<br />
Upala, Colonia Blanca, Finx (s lS io Negro, Rivera 1560<br />
(INB, MO); rd. to Los Angelees. NW of church in San Ra-<br />
It is possiT)le that Dieffenbachia oerstedii occurs<br />
m6n, Stone 3317 (DUKE); Sars lltltssd)n-Bajo Rodriguez, 12<br />
in the Lesser Anti]les and in French Guiana. How- km NW of Los Angelos, 16 kzl NW of San Ram6n, Croat<br />
ard 11744, pulpoltedly collected along the road be- 78830 (MO); vic. km markels I 1-12, ca. 7 km NW of Los<br />
tween Rousseau and Sulfur Spring on Dominica, Angelos, 11-12 km NW ol Stlls llam6n, Croat 78859<br />
(INB, MO); Rio Grande de 'I'til( ol(s, vic. Capulin, Stanappears<br />
to l)e tllis species. Another specimen coldley<br />
40223 (US); Rio Segundo, ( (l. I km N of Intl. Airport,<br />
lected in Frelle h Guiana (Croat 74319) along the Croat 36855 (MO); Rio Zapote. I, islopes of Volcan Mira-<br />
Cayenne-Regina highway, as well as cultivated ma- valles, W of Bijagua, Burger e t (ll. / /695 (F, MEXU, MO)<br />
terial going by the name "D. oerstedii variegata" San Carlos (Pital), 1 km N de lSa l jegua, Haniniel 20231<br />
(Lyon 67-1086), appears to also represent this spe- (INB); Rio Samen hacia Upala, Aguilar 5204 (INB, MO);<br />
San Ram6n, ca. 13 km NW ol Surl Ram6n, Luteyn 3263<br />
cies. The same taxon is in cultivation in Port-au- (DUKE); along rd. from San Ram6n, N of Balsa, ca. 13.8<br />
Prince, Martinique (perhaps originating from km N of bridge over Quebrada Volio, Stevens 13761 (MO);<br />
French Guiana). Since the species is not apparently 3.5-4 mi. W of San Ram6n, Croflt. 467$S5 (INB, MO); Rio<br />
widespread in the areas mentioned, the field-col- Grande, San Isidro, Carvajal 273 (K, MO); Upala, 13.8<br />
km N of Bijagua, Croat 36444 (MO); Upala Cant6n, Est.<br />
lected plants may in fact be plants escaped from Biol. San Ram6n, Dos Rios, Chinchilla 137 (INB, MO);<br />
cultivation. Living specimens studied of the mate- Upala, Rio Zapote, 4 km NNE of Bijagua, Croat 36297<br />
rial from French Guiana and the cultivated material (MO); 3.5 km W of Fortuna, 2.5 km NW of New Volcan<br />
from the I,yon Arboretum are characterized by hav- Arenal, Taylor & Taylor 11660 (MO). Cartago: slopes of<br />
Miravalles above Bijagua, L. Goniez 19038 (MO); Cant6n<br />
ing the midrib creamy white from the lower 1/4 to<br />
de Turrialba, 6 km W of La Suiza on the rd. to Pacayitas,<br />
the upper 1/4 Of the blade. A similar feature is found Kennedy & Solonion 4629 (F, INB, MO). Guanacaste:<br />
in some populations of D. oerstedii in Costa Rica. SW slopes of Volcan Rinc6n de la Vieja and Volcan Santa
Volume 91, Number 4<br />
2004<br />
Croat<br />
Revision of Dieffenbachia<br />
Maria, Burger & Pohl 7825 (F); La Tejona, N of Tilaran, tel Pink Paradise, near sea level, 5 km S of bridge over<br />
Standley & Valerzo 46000 (US); PN Guanacaste Est. Mengo,<br />
Volcan Cacao, INBio 186 (INB, MO); Tilaran, San Pedro<br />
de Rio Chiquito, Monteverde, Haber & Bello 7191<br />
(CR, MO); La Cruz-Santa Cecilia, Finca La Pazmompa,<br />
Rzos et al 109 (CR); PN Rinc6n, Rivera 623 (K, MO); Las<br />
Rio Agujas on rd. to Jaco, Croat 79075 (INB, MO); Sector<br />
Esquinas, vic. Fila Gamba hills behind Esquinas Rain<br />
Forest Lodge, along Quebrada Negra, at end of side rd.<br />
off of Villa Bricena to Golfito Rd., Croat & D. Hannon<br />
79284 (CAS, CM, COL, F, MEXU, MO, NY, SEL, TEX,<br />
Nubes de Rio Chiquito l km NW of village on Cont. Divide,<br />
Haber & Atwood 9163 (INB, MO); PN Guanacaste,<br />
VEN, WU); Nicoya Peninsula, Curu, Sanders et al. 19322<br />
(MO); Canton de Buenos Aires, Ujarras, headwaters of Rio<br />
Est. Cacao, Carballo et al. 47 (MO); Cord. de Guanacaste,<br />
Rinc6n de la Vieja, near refugee camp, along rd. NW of<br />
Kuiye, trail to Olan, Chacon 364 (F, MO); Coto Brus, Osa<br />
Peninsula, Sabanillas de Limoncito, L. G
742<br />
Annals of the<br />
Missouri Botanical Garden<br />
38647 (F). Jutiapa: vic. Jutiapa, Standley 7S669 (F) be- of Yaxchilan, Breedlove 33839 (DS); vic. Palenque artween<br />
Mita and Asuncion Mita, Steyermark 31763 (F). Pe- chaeological site, Davidse et al. 20326 (MEXU7 MO), 6-<br />
ten: between Finca Yalpemech on Rio San Diego and San 12 km S of Palenque on rd. to Ocosingo7 Breedlove 34977<br />
Diego on Rio Cancuen, Steyermark 45410 (F). Quezal- (DS); Pichucalco, cerca Campo Aviacion, F: Miranda 7S46<br />
tenango: Retalhuleu, near Chivolandia along rd. to San (MEXU); Solusuchiapa, 24 km below Ixhuatan along<br />
Felipe, Standley 87180 (F). Retalhuleu: Pueblo Nuevo road to Pichucalco, Breedlove 24166 (DS). Oaxaca: Choa-<br />
Stricker 342 (US), Rio Samala, vic. San Felipe, Steyermark pan, Mpio., San Juan Lalana, trail Jalahui-Arroyo San Pe-<br />
34555 (F). Sacatepequez: below Barranco Hondo, Stan- dro, Noriega & H. Vasquez G. 1353a (MEXU). Tabasco:<br />
dley 88988 (F). San Marcos: 3 km SW of San Rafael Pie Cerro las Campanas, 3 km E of Teapa, ca. 50 km S of<br />
de Cuesta, Harmon & Fuentes 4740 (MO); Rio Chopal, Villahermosa, Conrad et al. 2863 (MO);vic. of Teapa, Tea-<br />
Finca E1 Porvenir, S-facing slopes of Volcan Tajumulco, pa-Tacotalpa, 3.1 m E of Teapa, Croat & D. Hannon<br />
Steyermark 37456 (F); Volcan Tajumulco, Steyermark 65370 (MEXU, MO); 3 km E of Teapa along rd. to Jalapa,<br />
37153 (F); near El Molino, Standley 78523 (F); Rio de Croat 40107 (MO); Grutas de C)cona near Teapa, Davidse<br />
los Esclavos valleye near E1 Molina, Standley 60715 (F) et al. 29516 (MEXU, MO); raeotalpa, 3 km E of Lazaro<br />
Volcan Tecuamburro, Heyde & Lux 4654 (GH, K, NY, US) Cardenas, Cowan 2063 (MEXU, MO); Teapa, Cerro las<br />
Solola: S-facing slopes of Volcan Atitlan, above Finca Campanas, 3 km E of Teapa, c a. 50 km S of Villahermosa,<br />
Moca, Steyermark 47908 (F). Suchitepequez: near Pueb- Conrad & Conrad 2882 (MO). Veracruz: Cordova, Bourlo<br />
Nuevo, Standley 66844 (F), near Las Lajas, Standley geau s.n. (P); Las Palmas-Catemat o, km 1S, Leija & Garza<br />
58291 (F). HONDUItAS. Coyol, Carleton 508 (US), Stan- 3341 (MEXU); Las Palmas-(3cltemaco, km 18, C-12-A<br />
dley 26305 (F, (H, US). Atlantida: along rd. for munic- Gonzalez 3341 (MEXU);LasCru(es, Las Choapas, G6mezipal<br />
water supply of Tela, Lancetilla Botanical Gardens, Pompa 1505 (F); Ebiotrolottl, A/laya 1 (MEXIJ); 6.5 km<br />
on rd. ca. 2 mi. WXW of Tela and S of main hwy., Croat from Santiago Tuxtla and 3.6 km on trail to Cerro del<br />
& D. Hannon 6462L? (MO, TEFH, US); Campamento Que- Vigfa, Gonzalez 5597(MEXU);(atemaco, 10 km N of Sonbrada<br />
Grande ca. l() km SW of La Ceiba, base of N slope tecomapan, vic. Hotel Playa E.S( ondida, Nee 23733(B, F<br />
of Pico Bonito, Lie.s/ler & Mefia 26236 (MO); Lancetilla, GH, MEXU, MO, NY); E sidev of entrance of Laguna de<br />
4 km S of Tela, Me/l(l 190 (TEFH); sendero a la Pica, E1 Sontecomapan into the Gulf of Mexico, 7 km NE of Son-<br />
Dorado, Cruz 354 ('I IEFH); ca. 3 mi. S of Tela, We/)ster et tecomapan, Nee 22595 (E M()); (Cerro Cochinitos, near<br />
al. 12624 (US), W(6.ster et aI. 12625 (F, MO, US); Tela, Catemaco, R. Hernandez .S12 (F MEXU, US); Playa Esvalley<br />
above Exp. Stat., MacDougal et al. 3193 (ENCB, condida, 12 mi. airline NN\X' of Sontecomapan, Holstein<br />
F, MO, NY), Macl)ellg(ll et al. 3299 (MO); near Tela, Pfei- & Arnibruster 20425(U(3);(;t.EAl,,i.S of Catemaco near<br />
fer 2163 (US), KSltKl/dley 52702 (F, US); 10 mi. Sld of Tela Zapoapan on rd. to Acayu(.ll vlJoor() Jr. & Bunting 8928<br />
along Rfo Lane etilla, Croat 42645 (INB, MEXlJ, MO (BH); 5.7-6 mi. from CateAlllul( o orl rd. to Santecomapan<br />
PMA, TEFH); llSo San Alejo, S of San Alejo, KSt(lndley Moore Jr. & Blleting 893X(B[f); Catemaco-Montepio, 12.1<br />
7700 (F), La Cei))a area, 35 km S of La Ceiba oll rd. to km beyond end of asphalt llw. poltion, 22.2 km N of<br />
Olanchito, Madi.so/Z. 712 (GH); La Ceiba, Mt. Cangrejal, Catemaco, along border trail to tllee l os Tuxtlas Res., Croat<br />
Mt. Cangrejal, l a (3eeiba area, Y7lncker et al. 8395 (1z, GH, 78687 (MO); along rd. betweetl (gateemaco and Montepio,<br />
K, MO, US). Colllayagua: ca. 2 km S of Lake Yojoa 2.6 km S of Los Tuxtlas F iel(l Sttltion, Croat 78695 (MO<br />
Balick et aI. 1738 (MO). Copan: 24 km E of Santa Rita, WU); 3 mi. SW of Sontecollltly)alle I os Tuxtlas, Barlow s.n.<br />
Harmon & Dwyer 4()35 (MO, MEXU); Nueva Al( adia, 6 (US); Chinameca, Pajapan, 7( lle (t *1l. 4466 (MEXU); Comi.<br />
S, Harmon & l+5uentes 6419 (MO). Gracias a Dios: atzacoalcos, 6 mi. E of Cont%l(oul(osX Hwy. 180, Croat<br />
Ahuas Bila, 200 km SW of Puerto Lempira, Nelson & Cruz 40062 (CM, MO, QCA, TEF H); Hidalgotitlan, 3 km SW<br />
9215 (MO, TEFH, UMO). Yoro: Cordillera Nolliere de of Campamento La Laguna? N e)2W'993(F, M, NY, XAL);<br />
Dios, hills S of San Jose de Texiguat, Davidse et al. 34478 Hidalgotitlan, 1 km SE of Agustin Melgar, Nee 29752<br />
(MO). MEXICO. Campeche: E1 Maculisal, 40 knl al sur (MO); Rio Soloxuchil, entre Hnos. (3edillo y la Escuadra,<br />
de la carretera, Escarciga, Chetumal, Bravo s.n. (MEXU M. Vasquez et al. V-907(XAIU);lcls Choapas, Las Cruces,<br />
30199) (MEXU). Chiapas: Chiapas, Calbrera et al. 1937 Nerling & Gomez-Pampa /.5()T (1q); Misantla, 8 km S of<br />
(MO); Izabal, Mpio. Livingston, E. Martinez et al. 23175 Misantla on rd. to Xalapa, Ma(li. esl 589 (GH, SEL); San<br />
(MEXU); 2 mi. S of Chiapas border along Hwy. 19S, 8 mi. Andres Tuxtla, Est. de Biol. Iro^)i(al Los Tuxtlas, N of<br />
N of Pichucalco, Croat 40087 (MO), Croat 4008(? (MO); San Andres Tuxtla betweell Xollte^( omapan and Montepio,<br />
60 mi. SE of Palenque, Croat 40163 (CHIP, MO); near Croat & D. Hannon 63129 (MEXU, MO), 19 Aug. 1972,<br />
ruins at Palenque, KSpellman et al. 164 (F, MO, NY); 2.5 Madison 627 (GH); San Andres Tuxtla, N and E sides of<br />
mi. N of Isthuatan, Croat 47868 (MO); Bochil-Pichucalco, Laguna Encanatada, 3 km NE of San Andres, Nee et al.<br />
17.1 km SW of Pichucalco, Croat 78678 (MO); 2() km S 24759 (F, K, MO, NY, SP, XAI,), Ibarra 455 (MEXU),<br />
of Palenque on rd. to OcosingoS Mayo & Madison 301 (K); Ibarra & Cedillo 1804 (MEX, MO, NY), barra 645<br />
Mpio. Ixhuatan, Clarke 60 (DS); Ococingo, 19 km NW of (MEXU, MO), Dillon et al. 1837 (F, MO, NY), Cedillo E<br />
Crucero Corozal, E. I#artinez 13445 (MEXU, MO); Tene- 3645 (MEXU, MO), Calzada 338 (F, MEXU), Chazaro 416<br />
japa, along Rio Tanate at Habenal, paraje of Mahben- (F, MEXU); Monte Pio, 15 km al W de Catemaco, L. Gonchauk,<br />
Breedlove 12752 (F); Palenque Archaeological zalez 1473 (ENCB, MEXU); Santiago Tuxtla, 6.5 km de<br />
Site, 3 mi. S of Palenque, Thorne & Lathrop 40559 (RSA); Santiago Tuxtla y 3.6 km camino al cerro del vigia, Leija<br />
Rio Cuxtepeques, near Finca Gadow, Breedlove 40155 & Garza 5597 (MEXU); Santiago Tuxtla, cerca Madero,<br />
(DS); Las Margaritas, Breedlove & McClintock 34192 (DS); Ramamoorthy et al. 3763 (MEXU); Tezonapa, 5 km SW<br />
Mapastepec, Rfo Testecapa, 10 km SE of Mapastepec of Motzorongo, vic. Felipe E. Martinez, R. Robles G. 815<br />
Breedlove & Thorne 30681 (DS); Ocosingo, 5 km SW of (MEXU, XAL); Tlapacoyan, along Rio Tablazos, upstream<br />
Santo Domingo, 120 km SE of Palenque on rd. to Bonam- from Puente de Tomata, 6 km SSW of Tlapacoyan, Nee et<br />
pak, Davidse et al. 20440 (CM, MEXU, MO); Ocosingo, 3 al. 26103 (F, NY, XAL). PANAMA. Chiriqui: vic. David,<br />
km NW of Vertice del Chisoy camino a Boca Lacantumf Pittier 2836 (MO); 13-20 km W of Rio Chiriqui Viejo,<br />
E. Martfynez S. 13630 (MEXU); Rlo Usumacinta, at ruins D¢Arey 10766 (MO); rd to Rfo Serrano, Folsom et al. 2111
Volume 91, Number 4<br />
2004<br />
Croat<br />
Revision of Dieffenbachia<br />
Figure 21. Dieffenbachia panamensis. A. Habit of flowering plant (Croat 67526). B. Potted plant showing ovate<br />
blades (Cirino s.n.). C. Habit showing ovate-elliptic blades and inflorescences (Croat 74856). D. Crown of plant<br />
with blade showing quilted blades and close-up of open inflorescence (Croat 67526).<br />
(MO); W of Tole, Rfo Cuvibora, Hammel 6264 (MO); Burica<br />
Peninsula, vic. of Puerto Armuelles, San Bartolo Limite,<br />
10-12 km W of Puerto Armuelles, Croat 22173 (MO).<br />
Cocle: 4-6 km N of E1 Cope, Montenegro & Chung 1462<br />
(PMA, STRI), Aranda et al. 2860 (PMA); La Mesa, N of<br />
680-770 m, 25 Mar. 1993, T B. Croat 74856<br />
(holotype, MO-4342614!; isotypes, B!, CAS!,<br />
COL!, DUKE!, F!, GH!, INB!, Lt, K!, MEXU!,<br />
NY!, PMA!, UB!, US!, VEN!). Figures 21,<br />
E1 Valle de Ant6n, 2 km W of Cerro Pil6n, Croat 37351<br />
(MO). Veraguas: vic. Santa Fe, 1.7 km past Escuela Alto<br />
30A.<br />
Piedra, Croat & Zhu 76859 (MO); 6-7 km past school,<br />
Nee 99121 (MO), Luteyn & Wilbur 4569 (DUKE).<br />
Cultivated plants. Mexico. Veracruz: Catemaco, cultivated,<br />
Bunting 1692, Lankester Gardens, Cultivated, Kew<br />
70-76-494 (K); Finca La Selva, originally collected by Helen<br />
Young, 17 June 1971, Croat 68449 (CM, CR, MO).<br />
Planta 0.75-2.5 m; internodia brevia, 34 cm diam.;<br />
petiolus 10-14 cm longus, vaginatus ad apicem; vagina<br />
effusa; lamina ovata ad elliptica, (26345-75 cm longa,<br />
(13.5)1740 cm lata; inflorescentia 3 per axillam; pedunculus<br />
10-18 cm longus; spatha 13-20 cm longa; spadix<br />
12-18 cm longa, cum parte pistillata 5-9 cm longa.<br />
21. Dieffenbachia panarnensis Croat, sp. nov.<br />
TYPE: Panama. Cocle: vic. of E1 Cope, 4.1 mi.<br />
N of village, along old logging road which<br />
leads down to the lowlands, 8°39'N, 80°36'W,<br />
743<br />
Stout erect herb, 0.75-2.5 m tall; internodes<br />
short, typically tnore than twice as broad as long,<br />
1-3 cm long (typically somewhat longer on one side<br />
than on the other), 3-4(5) cm diam., dark green,
744 Annals of the<br />
Missouri Botanical Garden<br />
moderately glossy. LEAVES rosulate, erect-spread- this species to be certain of its flowering and fruiting<br />
to spreading; petioles (6)10-14 cm long (aver- ing phenology. However, flowering collections have<br />
aging 10.6 cm long), moderately erect, dark green been made in January, March, July, and September,<br />
(white at base), sheathed throughout, the margins and fruiting collections during September and Noflaring<br />
to recurled, sometimes incurled, markedly vember.<br />
crisped-undulate nearly throughout; blades ovate to Discussion. The species is recognized by its<br />
elliptic, (26)45-75 cm long, (13.5)17-40 cm wide fully sheathed petioles that are usually flaring to<br />
(averaging 4.5.9 x 24.4 cm), 1-2.4 times longer recurled, by the moderately coriaceous, somewhat<br />
than wide (averaging 1.6 times longer than wide), velvety, weakly quilted blades, and usually broadly<br />
markedly ine(3uilateral (one side 2.5-5 cm wider convex midribs. It has up to three large infloresthan<br />
the otlle) ol)tuse to rounded at apex (the tip cences (mostly more than 30 cm long) per axil.<br />
inequilatelul all(l weakly acute to acuminate), acute The species may be most closely related to D.<br />
to roun(le(l at l)ase, moderately coriaceous, mod- standleyi, which ranges from Nicaragua to Honduerately<br />
l)icololous, dark green, matte and somewhat ras along the Atlantic slope. Both share petioles<br />
velvety to glistellirlgly velvety above, weakly quilt- mostly fully sheathed, and have the sheath margins<br />
ed and minlltely wrinkled on upper surface, much rolled outwatd, but D. pananiensis differs in having<br />
paler to mo(lel ately paler and slightly glossy to blades more coriaceous, matte, and somewhat velmatte<br />
below (llying dark blackish brown to dark vety to glisteningly velvety above, weakly quilted<br />
yellowish l)own above, yellowish brown to grayish and minutely wrinkled on the u)per surface.<br />
brown below; midrib broadly convex or sometimes Though tlle species does not o(cur in the same<br />
flattene(l, 1..5-2 c m wide, slightly paler above, area, it colll(l be confused with O. horichii, a spesomewhat<br />
nlore (onvex and slightly paler below; cies with a similarly fully sheatGle(l petiole, but the<br />
primary lat.(ral 1peins modelately quilted, (7)10 to margins ol which are incurle(l lather than flaring.<br />
20 per side. al ising at an acute angle, then spread- The blades of O. horichii dry nlostly greenish rather<br />
ing at 4tS°-()()° angle, often at a somewhat wider than somewlsat blackened. Die/j(lll)(lchia horichii is<br />
angle Otl ose si(le, obtusely sunken above, convex restricted to the Pacific slope of (4osta Rica, ranging<br />
to obscllrels X aise(l and dal ker below; interprimary from sea le veL to 900 m, whi le D. panamensis is<br />
veins usucllly 1 I)er pair of primary lateral veins, primarily ksown from the Atlalltie slope of Panama<br />
about equal to I)rimaries; minor veins not visible. (also know s [l om the Pacific S lo,oe at higher ele-<br />
INFLORES(411,NCES 3 per axil; peduncles 10-18 vations).<br />
cm long (avetaging 12.5 cm long), somewhat flattened,<br />
me(lium gleen, matte, weakly striate drying,<br />
Paratylv(.s. IANAMA. Cocle: Allo Calvario, 7 km N<br />
of Cope, FolxeZzl et al. 8264 (M0); Alto Calvario, old lumto<br />
6-10 mlll (lianl.; spathe 13-20 cm long (aver- ber trail to Itls Ricas, Lim6n & Sclrl Juan, Croat 68820<br />
aging 18.4 ( m long), medium to pale green, weakly (M0); Alto (>llvario Region, 4.5 mi. 1N of E1 Cope, 2.5 mi.<br />
and finely striate on back surface, with darker, N of Escuelbl 13a1rigon, Croat 675L?6 (M0); 8 km above E1<br />
oblique lines extending out to the margins, inner Cope, Harrll)7(l 778 (M0), Folsom & Collins 6486 (M0).<br />
Darien: Rfo Iuquesa, ca. 2 air kzl flom Cont. Div., vic.<br />
surface sliglltly paler; spadix 12-18 cm long; free of Kittredge hold mine, Croat 272?()6 (M0). Panama:<br />
part 8.5 crn long; pistillate portion 5-9 x 1.8-2.2 above E1 (2ope, 28 km NW of Penorlome, Read & Watson<br />
cm, narrovve(l slightly toward the apex; sterile sta- 84-75 (US).<br />
minate portion 3-4.2 x 1-1.2 cm; mostly sterile<br />
intermediate see tion 1.2 cm long, with a few scat- 22. Dieff¢nbachia pittieri Engl. 8 I(. I(rause,<br />
tered stamino(lia in the lower half; fertile staminate Pflanze-lr. IV. 23 Dc(Heft 64): 42. 1915.<br />
portion 5-7 c m long, the flowers irregularly 5-sid- TYPE: Panama. Canal Area [Colon1: Gamboaed,<br />
2.5-3 nlrn diam.; pistils 3.5-4 mm diam., ir- Las (3 l uces [currently Madden Forest Reregularly<br />
rounded at apex, closely packed, almost serve], 50-80 m, 2 July 191 1, H. F: Pittier<br />
contiguous; staminodia club-shaped, 4-5 mm long, 3766 (holotype, US!; isotype, B not seen). Figgenerally<br />
extending above the pistils, broadest at ures 22, 29B.<br />
base and apex, the tips 1.5-2 mm diam. Fruits orange.<br />
Herb, to probably less than 1 m tall; internodes<br />
1-1.5 cm long, 1.5-2 cm diam., smooth, drying<br />
Distribution and habitat. Dieffenbachia pana- dark yellow-brown with conspicuous pale petiole<br />
mensis ranges principally along the Atlantic coast scars; petioles 10-11 cm long, fully sheathed, freeof<br />
Panama from 50 to 850 m, on both slopes along ending and weakly auriculate on both sides at apex;<br />
the Continental Divide east of the Canal Area. blades obliquely oblong, 17.8-20.5 cm long, 6-8.0<br />
Phenology. There are not enough collections of cm wide, 2.9-3.1 times longer than wide, 1.8 times
Volume 91, Number 4<br />
2004<br />
Figure 22. Dieffenbachia pittieri. Herbarium type specimen.<br />
Croat<br />
Revision of Dieffenbachia<br />
g7<br />
a d
746<br />
Annals of the<br />
Missouri Botanical Garden<br />
longer than petioles, shortly acute and markedly a broad sterile segment rather than having them<br />
inequilateral above, acute to obtuse at base, pri- contiguous or nearly so.<br />
mary lateral veins 6 to 7 per side, concentrating<br />
mostly in lower half of the blade, extending parallel 23. Dieffenbachia seguine (Jacq.) Schott, Wieto<br />
the midrib, then spreading at 25°-30° angle, ner /. Kunst 1829(3): 803. 1829. Arum seguinearly<br />
straight to weakly curved to the margin and ne Jacq., Enum. Syst. P1. 30. 1760. Arum sesweeping<br />
up along the margin, drying moderately guinum, orth. var. Caladium seguinum (Jacq.)<br />
obseure above, convex and darker than surface be- Vent., Mag. Encycl. 30. 1801. Diegenbachia<br />
low; minor veins parallel with obscure and irregular plumieri Schott, Oesterr. Bot. Wochenbl. 69.<br />
ross-veining on drying; surface drying matte, mod- 1852. TYPE: Plumier, Descr. P1. Amer. tab.<br />
el-ately dark yellow-brown above, light brown and 61 (lectotype, designated here). Figures 23,<br />
finely pale-speckled below. INFLORESCENCES 2 30B.<br />
pel axil; peduncles 3.5-5 cm long, drying light CaladiunI niaculatunI Lodd., Bot. Cab. tal. 608. 1822.<br />
brown, 2 mm diam.; spathe 17 cm long, to 3.5 cm<br />
wide when flattened; spadix 14.5 cm long; pistillate<br />
portion of spadix to 8.5 cm long, 4 mm wide; staminate<br />
portion of spadix 5 cm long; mostly sterile<br />
Dieffenbachia niaculata (Lodd.) G. l)on, in Sweet,<br />
Hort. Brit. ed. 3, 632. 1839. Dieffenbflchia niaculata<br />
(Lodd.) Bunting, Baileya 10: 145. l 963, nom. superfl.<br />
TYPE: Lodd., Bot. Cab. tab. 6()8. 1822 (lectotype,<br />
designated here).<br />
segment 2.2 cm long, drying 2 mm diam., with a<br />
few scattered cup-like pistillodes throughout its<br />
length; pistils 59, borne in a cup-like disk; staminodia<br />
mostly missing.<br />
Dic)Jfenbachia literata Schott, Oesterr. Bol. Wochenbl. 68.<br />
1852. Dieffenbachia seguine fo. litllrata (Schott)<br />
Engl., F1. Bras. 3(2): 175. 1878. I)i(.ffenbachia seguine<br />
subvar. Iiturata (Schott) lErlr,l., Bot. Jahrb.<br />
Syst. 26: 568. 1899. Dieffenbachi(l .s(guine var. Iiturata<br />
(Schott) Engl., Pflanzenr. 1V, 2.< Dc(Heft 64):<br />
Distribution and habitat. Dieffenbachifl pittieri<br />
is known only from the type in the Isthmux of Panama<br />
in an area of Tropical moist forest (T-mf) life<br />
zone (Holdridge, 1967) at less than 200 m elevation.<br />
It is most unusual to encounter an endemic<br />
species in this life zone, but the species is distinct<br />
from other species in Dieffenbachia. There is a possibility<br />
that this could be a hybrid between D. kil-<br />
47. 1915. TYPE: based on a cullivtlted collection<br />
fide Schott (not seen). Schott Pailllillr 1874 serves<br />
as the type [microfiche 64. c T] (I( ( lolype, designated<br />
here).<br />
I)ietfienbachia lineata K. Koch 8 BoLlel>, Index Sem.<br />
(Berlin) 14. 1853. Dieffenbachifl seglline fo. Iineata<br />
(K. Koch & Bouche) Engl., F1. Blas. :s(2): 175. 1878.<br />
Dieffenbachia seguine subvar. Iill(ata (Schott) Engl.,<br />
Bot. Jahrb. Syst. 26: 569. 1899. Dicwffenbachia seguine<br />
var. Iiturata (Schott) Engl., Pflanzenr. IV, 23<br />
lipii and D. isthmia because hybridization does oc- Dc(Heft 64): 47. 1915. TYPE: New Cranada, based<br />
c ur in the wild in Dieffenbachia. Its greatest on a cultivated collection at the Bf rlin Botanical<br />
Garden, not sczen. Schott illustratioll 1867 serves as<br />
esemblance is with D. killipiiS which also occurs the type [microfiche 64 d T] (le(lol!|)e, designated<br />
in this area and dries a similar color. Dieffnenbachia here).<br />
pittieri differs from D. killipii in having a dark Di().ffenbachia robusta Schott, Oesterr. I3OI. Wochenbl. 65.<br />
brown, smooth-drying stem (light yellow-brown, 1854. Dieffenbachia seguine var. robllsta (K. Koch)<br />
Engl., Bot. Jahrb. Syst. 26: 568. 1Xf39. TYPE: Lousually<br />
conspicuously ridged stems for D. killipii), cality unknown, cultivatczd colle( tioll of unknown orfully<br />
sheathed petioles (usually with the petiole igin at Berlin Botanical Garden. S( hott illustrations<br />
sheath ending well below the base of the blade for 1907-1908 serve as the type [mi( I-ofi( he 66 b2, b3]<br />
D. killipii), blades with the midrib flat on the upper (lectotype, designated here).<br />
Dicvffenbachia consobrina Schott, Syn. Aroid. 131. 1856.<br />
surface ("square-raised" for D. killipSi), and a spa- TYPE: Brazil. Rio Negro, Martius s. rl . (holotype, M) .<br />
dix with the pistillate and staminate portions widely Dieffenbachia poeppigii Schott, Syn. A Z oi(l. 130. 1856.<br />
separated by a long, mostly sterile portion (vs. with TYPE: Peru. Without locality, Poep/)ig s.n. (holotype,<br />
the pistillate and staminate portions more or less<br />
W destroyed during World War II); S( hott illustration<br />
1903 serves as the type (microfiche 64. b 6) (lectocontiguous<br />
in D. killipii).<br />
type, designated herc).<br />
Dieffenbachia pittieri has been confused with D. Dieffenbachia cognata Schott, Syn. Aroid. 130. 1856.<br />
Obscurinervia (Standley, 1944; Croat, 1978), but it TYPE Suriname. Paramaibo, I}Iartius s.n. (holotype,<br />
proved to share little in common with that species<br />
M). [See also Schott paintings 1845 & 1846.]<br />
Di().ffenb(lchi(l gollnterian(l Sf hott, Oesterl. Bot. /. 8: 387.<br />
once the type specimen was examined. It differs l858. rl=YPE: Venezuela. Without lo( ality, Collmer<br />
from that species in having smooth, not scurfy s.n. (holotype, B apparently lost); Sf hott drawing<br />
stems, unspotted, fully sheathed petioles, blades 1857 (microfiche 64 b. T) serves as the type (lectowith<br />
distinct primary lateral veins and with a midtype,<br />
designated here).<br />
Die.JJenbachia neglecta Schott, Bonplandia T: 30. 1859.<br />
rib flat, not "square-raised" above, and a spadix TYPFi: Jamaica. Without localityS Distin (holotype,<br />
with pistillate and staminate portions separated by K!).
Volume 91 Number 4<br />
2004<br />
Croat<br />
Revision of Dieffenbachia<br />
Figure 23. Dieffenbachia seguine. A. Habit of plant showing the long creeping caudex and erect portion of stem<br />
apex (Croat 60613). B. Potted plant showing habit and leaves with variegated blades and inflorescences at anthesis<br />
(Croat 69695). C. Close-up of crown of plant with abaxial surfaces of blades and side view of the spathe (Croat<br />
53921). D. Petiole showing slightly free-ending, inequilateral sheath and acutely sulcate free portion above sheath<br />
(Croat 68494). E. Crown of plant showing speckled petioles and inflorescence at anthesis (Croat 77298). F. Spathe<br />
at anthesis, cut open to show inner surface of tube. G. Close-up of inflorescence showing apical half with spathe<br />
blade somewhat spreading and staminate portion of spadix protruding somewhat forward. H. Portion of spadix showing<br />
bicarpellate pistils. F, G, H. (Croat 71828).<br />
747
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Annals of the<br />
Missouri Botanical Garden<br />
DiefJenbachia ventenatiana Schott, Bonplandia 7: 30. green and glossy soon becoming dark green, se-<br />
1859. Dieffenbachia seguine subvar. ventenatiana miglossy to almost matte, smooth. LEAVES arching;<br />
(Schott) Engl., Bot. Jahrb. Syst. 26: 568. 1899. Dieffenbachia<br />
seguine var. ventenatiana (Schott) Engl. petioles 10-34.5 cm long, averaging 29.7 cm long,<br />
Pflanzenr. IV, 23 Dc(Heft 64): 48. 1915. TYPE: Su- medium green and weakly glossy, rarely white,<br />
riname. Without locality, Hostrnann s.n. (holotype, sometimes densely pale green maculate, sheathed<br />
K!).<br />
2/3_85 or more their length, free part of petiole 5-7<br />
DiefJenbachia lingulata Mart. ex Schott, Prod. Syst. Aroid.<br />
334. 1860. Dieffenbachia seguine var. Iingulata cm long, acutely sulcate; sheath 20-28 long, pale<br />
(Mart. ex Schott) Engl., F1. Bras. 3(2): 175. 1878. green and matte on inside, usually acute on one<br />
Diefferl6achia seguine subvar. Iingulata (Schott) side, rounded on the other side, sometimes inequi-<br />
Engl., lSot. Jahrb. Syst. 26: 568. 1899. TYPE: Brazil. laterally acute on both sides, curved inward along<br />
Para: (J. M(lrtius 3307 (holotype, M!).<br />
the margins but the sides not contacting, faintly<br />
Dieffienb(lchi(l irror(lta Schott, Prod. Syst. Aroid. 335.<br />
186(). Die.lRn6achia seguine fo. irrorata (Schott) striate throughout but especially noticeable toward<br />
Engl., Fl. IAras. 3(2): 175. 1878. Deffenbachia se- the base, the basal portion of the sheath often perguine<br />
sul)var. irrorata (Schott) Engl., Bot. Jahrb. sisting after much of the petiole falls free; blades<br />
Syst. 26): 5623. l899. Dieffenbachia seguine subvar. ovate-lanc eolate, 17-38.5 cm long, 10-20 cm wide<br />
irrorflt(l (S( holt) Engl., Pflanzenr. IV, 23 Dc(Heft 64):<br />
48. 1()15. 'I'YI'Id: Brazil. Para: C. Martius 2640 (ho-<br />
(averaging 32.1 x 17.3 cm), 2.7-3.3 times longer<br />
lotypt?, M!).<br />
than wide, 1.2-1.6 times longer than petioles, ine-<br />
Die,0enbachi(l ( ons/)lircata Schott, J. Bot. 2: 52. 1864. quilateral, one side 1.5 cm broader, inequilaterally<br />
Die.,ffierl b(l ( hi(l seguine fo. conspurcata (Schott) Engl., rounded at base or with one side acute the other<br />
F1. Bras. -3(2): 175. 1878. TYPE: Brazil. Para: Schott rounded, subcoriaceous, semiglossy, medium-dark<br />
painti rlgs 184(3 & 1850 (microfiche 65 b5 & b6)<br />
selve ax thee ty)e (lectotype, designated here). green, sornetimes mottled with pale green or white,<br />
Dieffenb(x(11i(l b(lrr(l.(lliiniana Verschaff. & Lem., Ill. Hort. especially along midrib, moderately paler below;<br />
ll: 1. 3297. 1X64. Dieffenbachia seguine fo. barra- midrib fklttened-convex and slightly paler, ca. 6<br />
quini(111(l (Vels(haff. & I,em.) Engl., F1. Bras. 3(2): mm wi(le above, narrowly rounded and slightly pal-<br />
]74. 129729. 1)i()@fenbachicl seguine subvar. barraquiniarla<br />
(Veels(htllf. & Lem.) Engl., Bot. Jahrb. Syst.<br />
er below, sometimes darker green-maculate in low-<br />
26: 5()tA. 189(). Dieffenb(lchia picta var. barraquini- er half; )r-imary lateral vein.s 13 to 15(19) per side,<br />
ana (Vels( hall. & Lem.) Engl., Pflanzenr. IV, 23 arising tlt 40°-50° angle, quilted-sunken and con-<br />
D((Hell 64): S(). 1915. TYPE: not designated; the colorous tlbove, concolorous and concave below; inilluslltiorl<br />
ill lll. Hort. 11: t. 387. 1864, serves as terprimclly veins usually present and nearly as conthet<br />
ty^)e (le( lolype, designated here).<br />
Dieffenba(11.i.(l ;,yiA,r(ll1tea Verschaff., Ill. Hort. 13: t. 470, spicuous; as primary lateral veins; minor veins<br />
471. 1866. 1)ieffenbachia picta subvar. gigantea moderately indistinct, arising from the midrib and<br />
(Vers( llaff.) Etlgl., Bot. Jahrb. 26. 569. 1899. TYPE: parallelillg the primary lateral veins. I1NFLORESnot<br />
(leesignatee(l; the illustration in Ill. Hort. 13 470- CENCES 1 to 4 per axil, usually solid green but<br />
471. 1866, setves as the type (lectotype, designated<br />
here).<br />
sometimes pale greenish yellow maculate through-<br />
Dieffenba(l1ifl wellli. ii Linden, Ill. Hort. 17: t. 11. 1870. out (ma( ulations sometimes appearing in irregular<br />
DieJkIlb(lc 11i(l seguine subvar. wallisii (Linden) transverse rows on spathe); peduncles 2.5-14 cm<br />
Engl., Iflarl>enr. IV 23 Dc(Heft 64): 47. 1915. long, 7-X x 8-12 mm diam., medium green, weak-<br />
TYItId: Brazil. Rio Negro, 1866, Wallis s.n. (holotype, ly glossy, faintly dark green-striate; spathe 11-24<br />
K!).<br />
Dieffenba(hia bra.siliensis Veitch, Cat. 12. 1875. DiefJen- cm long, abruptly acuminate at apex, gradually<br />
bachi(l picta fo. brasiliensis (Veitch) Engl., F1. Bras. constricted above tube, in the upper 2/3, medium-<br />
3(2): 176. 1878. TYPE: Brazil. Not designated; dark green and semiglossy to matte outside, slightly<br />
drawing on p. 12 of Veitch Cat. serves as the type paler and glossy within; spathe blade at anthesis<br />
(lectotype, designated here).<br />
DiefJenbachia picturata L. Linden & Rodigas, Ill. Hort.<br />
stiffly erect then recurving near apex; spathe tube<br />
39: l()l. t. 163. [CLXII] 1892. Dieffenbachia picta 7-10 cm long, 1.2-1.8 x 2.0-2.5 cm diam.; spadix<br />
Schott subvar. picturata Engl., Bot. Jahrb. Syst. 26: 10-19 cm long; the naked portion at base 1.5-2.5<br />
570. 1899. TYPE: Venezuela. Illustration in Ill. cm long; pistillate portion of spadix 4-8.5 cm long;<br />
Hort. vol. 39: t. 163. 1892, serves as the type (lec- pistils 20 to 25, closely aggregated except in upper<br />
totype, designated here).<br />
DiefJenbachia seguine (Jacq.) Schott subvar. ventenatiana 10-12 mm, with up to 3 of them in a loose spiral<br />
(Schott) Engl., Bot. Jahrb. Syst. 26: 568. 1899. Dief- across the spadix but usually with 1 or 2 at any<br />
fenbachia seguine (Jacq.) Schott, var. ventenatiana level on the spadix; ovary bicarpellate, markedly<br />
(Schott) Engl., Pflanzenr. IV. 23 Dc(Heft 64): 48. bilobate, rarely 3- or 4-locular (and 3- to 4-lobate,<br />
1915. Diefenbachia ventenatiana Schott, Bonplandia<br />
7: 30. 1859. TYPE: Suriname. Hostnian (K!).<br />
respectively), pale green, semiglossy, 3.2-3.6 x<br />
2.1-2.4 mm; stigmas pale orange, doubled (one for<br />
Herb, to 1.5 m tall; stems reclining at base then each locule) but usually fused along the adjoining<br />
erect; internodes 1.7-5 x 1.5-4.0 cm, medium margins, 2.3-4.3 x 2.0-2.4 mm diam.; staminodia
Volume 91, Number 4<br />
2004<br />
Croat<br />
Revision of Dieffenbachia<br />
4 per pistil, 2.8-3.1 mm long, 0.8-1.0 mm wide at wendlandii. The latter species was even erroneousapex,<br />
slightly thickened toward apex, flattened and ly synonymized with D. seguine by Engler (1915).<br />
free at base, the base equally as wide or up to twice Both species sometimes have blades of similar<br />
as wide as the apex; fertile staminate portion of shape, and both have petioles that are comparably<br />
spadix 5-7.5 cm long, 5-15 mm diam., slightly sheathed and sometimes sharply C-shaped on the<br />
broader midway, tapering slightly toward both ends, free portion. However, D. wendlandii differs in havbluntly<br />
acute to rounded at apex, at anthesis pro- ing pistils with a single ovule. The staminate spadix<br />
truding forward out of spathe and usually being of D. wendlandii is also more or less tapered toward<br />
trapped there by the closing spathe; staminate flow- the apex and not protruding strongly forward at aners<br />
5 to 6(8?) per spiral, (1.6)2.2-3.5(4) mm diam., thesis, whereas in D. seguine the spadix is stubbysquarely<br />
rounded to rounded, sometimes broadest ellipsoid.<br />
perpendicular to the axis, smoothly rounded at I agree with Bunting (1979), who synonymized<br />
apex, sometimes with a transverse linear slit me- both D. picta Schott and D. rrzaculata (Lodd.) G.<br />
dially; anthers 5 to 6 per synandrium, shedding Don under D. seguine. This species has been the<br />
their pollen well below the rim of the synandrium; most confusing of all Araceae in the number of epthe<br />
mostly naked portion of spadix 2.0-4.0 cm long, ithets (subspecies, varieties, subvarieties, and<br />
6-8 mm diam., medium green with 1 pistil in lower forms) recognized, over 60 in all. Some are varieties<br />
1/3 and with 2 to 3 staminodes in upper 1/2, some- of D. picta, others varieties of D. seguine or comtimes<br />
with only a few staminodia scattered in upper binations between the same two taxa. It is not clear<br />
3/4. Berries bright red or orange.<br />
why this should be so. Throughout its range it is<br />
Distribution and habitat. Dieffenbachia seglline<br />
no more variable than any other species of Dieffenranges<br />
throughout much of the West Indies from bachia, but it is quite widespread and this brings<br />
Cuba (Ileana Arias, Havana, pers. comm.), Jamai- it into contac t with more workers. Most of the epc<br />
a, Hispaniola, and Puerto Ric o, through the LeKsKser ithets were l)ased on Schott names, but Engler<br />
AntilleKs to 'I'rinidad and South Amerie a, there rang- treate(l most of these as varieties or sul)varieties of<br />
ing throughout much of Venezuela (Ama%onaKs, Ar- D. .seguine or D. /)icta. All of the taxa involved<br />
agua, A)ure, Bolivar, Caral)obo, I)elta Amae UIo, share a suite of chara(ters that make it unique,<br />
namely the shar^)]y sulcate l)etioles the )rotru(ling<br />
Distrito Fe(Setal, Fal((')n, 1,ta, Miran(0a, Monagaks,<br />
Nueva Esparta, Portuguesa, Su(re, Ta(hila, 'lruji- an(l thickene(l staminate poltion of the sl)a(lix, an(l<br />
llo, Yarae uy, %ulia), eksl)e( ially in the Cordillera de bit arpellate ovaries.<br />
1a CoKsta, to (,uyana and Suriname (Boggen et al., A e ultivate(l e ollectioll from Gl enada (Croat<br />
1992), Frell( h (uiana, eakstern Brazil (Amal)a, 77298) ha(l sap that was; c elely-s( ente(l, not at all<br />
Amazonaks, (Joials, Maranhao, Para, RondoniaS Sao smelling of oxalic aci(l, tyl)ical of so rnany DiefWen-<br />
Paulo), and west to the lowlands of Colombia (Meta, b(lchi(l species. Croat 78X2S, frorll Venezuela, also<br />
Vaupes, Vie hada), eastern Ecuador (lfapo), and Bo- has a sweet- rather than a foul-se ented sap.<br />
livia (Pando, Santa Cruz).<br />
Engler (1915) placed Dieffenbachi(l lanciJolia<br />
DiefWenlv(lchifl seguine flowers and develops ma- Linden & Andre into synonymy with D. picta, I)ut<br />
ture fruit to some extent all year-round, but with the former is a distinct species from Antioquia Demore<br />
flowering occurring in the late dry season and partment, Colombia. Also excluded are combinathroughout<br />
the early part of the dry season between tions of the name, DieJfienbachia picta Schott forma<br />
March and September.<br />
lancifolia (Linden & Andre) Engl. and D. picta<br />
The species is characterized by having petioles Schott subvar. Iancifzolia (Lind. & Andre) Engl.<br />
that are shorter than the blade and sharply sulcate Also erroneously placed in synonymy with D.<br />
on the free portion, with the sheath margins acute picta was Dieffenbachia nieleagris Linden & Rodito<br />
rounded at the apex and with ovate-lanceolate gas and the combination subvariety nieleagris Engl.<br />
blades. The best character for separation of the spe- That species is from Ecuador (see illustration 159<br />
cies, however, is the unusual inflorescence with in Ill. Hort.) and looks like it might be synonymous<br />
large, bicarpellate ovaries and a spathe that is with D. spruceana Schott.<br />
somewhat spread backward while the staminate Dieffenbachia shuttleworthiana Engl. was synportion<br />
of the spadix protrudes prominently forward onymized with D. picta but should be excluded<br />
and persists after the spathe has closed. along with the following combinations: D. picta for-<br />
The species was long considered to be a common ma schuttleworthiana (Regel) Engl. and D. shuttlespecies<br />
in Central America but that material proved worthiana Hort. Bull. This Colombian species is<br />
to be mostly D. oerstedii, and in some cases, D. not closely related to D. seguine.<br />
749
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Annals of the<br />
Missouri Botanical Garden<br />
Additional specintens examined. Andre 1202 (K)7 Ca- niark 91896 (NY7 US); Los Caracas-Higuerote Rd.7 bedet<br />
6030 (K). BOLIVIA. Pando: Nicolas Suarez7 a few tween km 5 and Osma7 Bunting & Fernandez 3295 (NY);<br />
km N of Cobija7 Beck 17103 (LPB7 MO). Santa Cruz: Pico Naiguata7 Fila Las Delicias Naiguata7 vic. Las Deli-<br />
Velasco7 10 km SE of buildings of Est. Flor de Oro7 Nee cias7 Bunting & Manara 2126 (NY)7 Bunting & Manara<br />
41364 (MO7 NY). BRAZIL. Engler 226 (K, P), Engler 227 2119 (NY); Rio San Julian7 just above Caraballeda7 Bun-<br />
(K7 US). Mato Grosso Sul: Catharino et al. 1909 (SP). ting 2044 (NY). Falcon: PN Quebrada de la Cueva E1<br />
Para: Mpio. Capanema7 Rfo Quatipuru7 near Miraselvas7 Toro7 Liesner et al. 7681 (MO). Lara: Dtto. Jimenez7 PN<br />
ca. 30 km by rd. W of Braganc,a7 Davidse et al. 18102 Yacambu7 Quebrada Negra7 Davidse & Gonzale: 21012<br />
(MO); Rfo Anajas7 Anajas-Vista Alegre7 Cuanta do Anajas7 (MO). Miranda: Cerros del Bachiller7 5.5 km S of village<br />
Beck et al. 295 (NY)7 Rfo Anajas7 Ilha do Marajo7 Prance Santa Cruz on Hwy. 9 between Guatire and Cupira7 Croat<br />
et al. 30247 (MO). Rondonia: Alta Floresta do Oeste7 53956 (MO); Cerros del Bachiller7 near E end7 10 air km<br />
Rodovia P-507 Gonfalves et al. 224 (MO). Sao Paulo: Sao W of Cupira7 Steyerniark & Davidse 116647 (MO)7 PN<br />
Paulo7 Instituto de Botanica de Sao Paulo7 Secao de Fi- Guatopo7 Fila la Guzmanera7 Santa Teresa-Altagracia de<br />
toecologia7 Lotto s.n. (K7 MO). COLOMBIA. Vaupes: Rfo Orituco7 ca. 8 km S of jet. of rd. to Caucagua7 Bunting et<br />
Kuduyari7 tributary of Rfo Vaupes7 Schultes & Cabrera al. 2072 (NY)7 2074 (NY); Sta. Teresa-Altagracia de Or-<br />
17890 (NY). Vichada: Rfo Meta7 Manati7 Cuatrecasas ituco7 Aristeguieta 1764 (NY)7 Croat 21741 (MO); Cau-<br />
4225 (US). ECUADOR. Napo: Auca Oil Field7 Ingram cagua7 600 m7 Bunting et al. 2073 (NY). Monagas: Mor-<br />
1169 (MO7 SEL). t'RENCH GUIANA. Vic. of Saul7 route ichal Las Tetas7 tributary of Rfo Tonoro7 near Aguasay7<br />
to Bellizon7 100-300 m past Eaux Claires7 Croat 74137 Montes s.n. (MO); Caripe-Santa Ines Rd.7 ca. 3 km E of<br />
(MO7 US7 VEN); Piste de Belizon7 pk 21.87 Billiet et al. Teresen7 Colorado-Los Cigarrones7 Rio Colorado7 Bunting<br />
6257 (MO)7 Crique (Jabaret7 bassin de 170yapock7 Creniers 2729 (NY); Jusepin-Barcelona Rd.7 6 km SW of Jusepfn7<br />
9896 (CAY7 K). Cayenne: Colline de Montravel7 Ile de Bunting 2738 (NY); Caripe-Maturin Rd.7 Bunting 2678<br />
Cayenne 7 Le Goff A. 95 (CAY7 MO) 7 Piste de Saint-Elie7 (NY); Morichal E1 Esfrerzo7 Jusepin7 M. He redia 60 (MO).<br />
15.7 km S of ORS'l'OM<br />
camp7 Prevost 3258 (CAY7 MO)7 Nueva Esparta: Margarita Island7 Juan Griego trail7 J.<br />
Prevost 3580 (CAY7 MO); Centre ORSTOM de Cayenne A. Johnston 305 (NY7 US). Portuguesa: Quebrada A1-<br />
Pre'vost 3382 (CAY, MO); Saint-Laurent-du-Maroni7 Saul7 gatrobo7 tributary of Rfo Morador7 7 krn NE of Boca de<br />
trail to Mont (Jalhao, Mori & Gracie 18717 (MO7 NY). Morlte7 22 km NE of Rio Suruguapo7 kSt(yermark et al.<br />
PERU. Loreto: Allo Amazonas7 Dtto. Manseriche7 Pongo 127204 (MO); Guanare-Biscucuy Rd.7 1 l luente7 21 km<br />
de Manseriche7 t?. IVoj(1ts et al. 607 (B7 MO7 US7 WU). abovee jet. of Guanare-Barinas rd.7 BZ111.1.is1.g 3321 (NY);<br />
VENEZUEI jA. Alllzllas: Rio Guainia7 S of Maroa7 Ma- Dtto. Araure7 Rio Auro (1JA IJUCia)7 NW of Sta. Lucia7<br />
guire et al. 3646/ (NY); Cano Mosquito7 Cano Marieta7 Aysz1(lrd & Ortega 3090 (M()); Dtto. (^^l lrsare7 Guanare-<br />
Lister & Colche.ster 272 (K)7 Tencua7 Colchest(r 2108 (K)7 Bat ias7 Mpio. Mesa de Cava( as7 Sterp,tio.s ( I al. 7940 (MO7<br />
Dpto. Atabapo7 Rfo Clll-ucunuma7 Raudal Picure7 J. Pe'rez P()lWl). Sucre: E1 Pilar-(ffvIaliquen7 El Pilar and Guari-<br />
& M. Sosa 671 (M()); Cano Majagua7 E. & S. Zent 2189 que.Z! 4-10 km S of E1 Pi]al7 (Croat 5438() (MO). Tachira:<br />
(MO); Casiquiare7 Rfo (^uainia7 Bunting et al. 4108 (NY); 8 klll S of E1 Pinal7 Steyermark et al. 1()2()36 (MO7 MY);<br />
Dtto. Atures7 Rio (2ataniapo7 45 km SE of Puerto Ayacu- Sarl Cristobal-Chorro del lndio7 Cano Xe(to-La Florida<br />
cho7 Steyerniark (t *ll. 122412 (MO). Apure: Dtto. San krn 14-20 al E de San Cristobal7 Buntill;,r 11687 (MO)7<br />
Fernando7 Rio AIau( a, 5 km SW of E1 Faro, Davidse & vi. I as Minas7 N of La Laguna7 16 krrl Sl of Santa Ana7<br />
Gonzalez 13410 (M()). Aragua: betw. Maracay and Ocu- Ste-(rnlark & Liesner 118891 (MO). Trujillo: Sabanamare<br />
de la Costae Henry Pittier NP7 1.6 km N of summit7 Mel(loza7 ca. 5 km below Betijoque7 Bllr7ting 2829 (NY).<br />
Croat 60567 (CM7 1R MO); Pittier Park7 Paraiso trail to Yaracuy: Las Trincheras-El Cambur7 N ol Salom (NE of<br />
Pico Periquito7 Cro(lt 21412 (MO); Ocumare-Portachuelo7 Ni>ua7 W of Valencia) on rd. to Candelal i l7 Croat 54649<br />
Steyerniark & Kogers 119364 (MO7 USS); Portachuelo- (CM MO); Marin and Aroa7 Sierra de Atoa7 Dtto. Felipe<br />
Paraiso Trail7 neal Itclncho Grande7 Bunting et al. 1937A between Albarico and Tesorero7 9.8 krn 1N of jet. of hwy.<br />
(NY); Rancho Gtan(le to the Toma7 Bunting et al. 1949A 1 at Marin7 Croat 60613 (MO); Sierra de Aloa7 PN Yurubi7<br />
(NY); 12 km NW of lXancho Grande7 Bunting 2035 (NY) 0-2 km N of San Felipe7 Rio Yurubi7 I,i(.wner & A. Gon-<br />
Bunting 2036 (NY), Bunting 2622 (NY); Maracay7 campos zale.z 10126 (MO7 NY); Sierra de Aroa7 vic. Aracal7 7 km<br />
de la Facultad de Agionomia y Centro de Investigaciones above San Felipe7 Bunting et al. 1997 (NY); Cerro La<br />
Agricolas7 Univ. Cential de Venezuela7 near Pozo del Dia- Chapa7 N of Nirgua7 Steyerniark & Buntltlg 97728 (NY);<br />
blo7 Bunting 2026A (NY); vic. Maracay7 Bunting 2027 Dtto. Nirgua-Dtto. San Felipe7 Cerro l a (hapa7 7 km N<br />
(NY); Rio Tuy7 NE of Maya7 7 km SE of Colonia Tovar7 of 1\ irgua7 Davidse et al. 20914 (MO); (e rro La Chapa7<br />
Steyerniark & Liesner 121834 (MO). Bol*ar: La Gran Steyerniark et al. 100213 (NY7 US); Cerio I a Chapa7 Stey-<br />
Sabana7 E1 Dorado-Santa Elena7 km 2027 S of Salto Kama7 erniark et al. 100318 (US)7 Steyerniark et *ll. 100239 (US);<br />
Davidse et al. 4844 (MO); base of Altiplanicie de Nuria7 Dtto. Nirgua7 Salom-La Candelaria Rd.7 (4umbre Game-<br />
Bunting & Holniquist 4319 (NY); W of Hato de Nuria7 lotal7 Meier et al. 5164 (MO7 VEN); I)tto. Bruzual7<br />
Steyerniark 88864 (NY7 US); Rio Karuai7 base of Sororo- Montana de Maria Lionza7 W of Sorte7 Sleyerniark et al.<br />
pan-tepui, W of La Laja7 Steyerniark 60796 (NY); near E1 124955 (MO); Dtto. San Felipe7 PN Yurul)i Ayniard et al.<br />
Paito7 5 km S of Cano Paso Ancho7 Bunting & Trujillo 2714 (MO); Dtto. Urachiche7 Quebrada Higueronal7 W of<br />
2236 (NY); Kamarata7 Bogner 965 (M). Carabobo: PN Urachiche7 vic. Sabana de Mendez7 Steyerniark et al.<br />
San Esteban7 Rio San Esteban7 Benftez de Roias et al. 124629 (MO); Rio Guayabito7 15 km N of Marin7 Steyer-<br />
4661 (MO7 MY); Rio San Gian7 5-6 km S of Borburata7 niark & Bunting 105293 (MO). GREATER ANTILLES:<br />
Steyerniark 94331 (MO7 US). Delta Amacuro: Rio Ama- HAITI. Nash 611 (NY); massif de la Lelle7 Port au Prince7<br />
curo between "vuelta larga77 and Cerro Wuausa7 Dept. An- Mantflurry7 Eknian 1983 (K). HISPANIOLA. SANTO DOtonio7<br />
Trujillo et al. 17397 (MY). Distrito Federal: Fila MINGO. San Cristobal: Cordillera Central7 San Cristo-<br />
Las Delicias above Naiguata7 Bunting & Manara 2124V bal7 Hato Damas-Mano Matuey7 Croat 68582 (MO). Bar-<br />
(NY)7 Drake 7 (P7 US); Cerro Naiguata7 6 km SW de los ahona: Fuertes 564 (GH); Santo Domingo7 Zanoni et al.<br />
tanques de la Electricidad de Caracas (Cocuizal)7 Steyer- 27170 (GH7 MO7 NY); E1 Aguacate7 La Leonor7 Moncion7
Volume 91, Number 4<br />
2004<br />
Croat<br />
Revision of Dieffenbachia<br />
Liogier 13307 (GH, NY); Carib Territory, Bataka, J. Higgins<br />
119 (MO, NY); Sierra de Baoruco, Arroyo La Travesia<br />
near the La Travesia sugar mill, Zanoni et al. 25159 (MO,<br />
NY). E1 Seibo: E1 Guaraguao-Los Hurados, Miches-Higuey,<br />
km 15, Mefia & Raniirez 9929 (MO, NY). Monsenor<br />
Nouel (Peravia): Cordillera Central, Rio Yuboa, Zanoni<br />
et al. 23113 (MO, NY); Cordillera Oriental, Arroyo de<br />
Agua, 11.7 km W of E1 Valle, Croat 68494 (MO); 9.2 km<br />
SE of Miches, along Rio Yeguada, Arroyo Santiago, Croat<br />
68547A (JBSD, K, MO). Samana: 2.3 km S of Playa E1<br />
Valle, Meiia & Zanoni 6614 (MO, NY); Sanchez, Las Canitas<br />
Mts., N. Tclylor 48 (NY); Sanchez Ramirez, Rose et cll.<br />
4375 (NY); Rio Cevicos, W of Cevicos, 22 km E of Cotui,<br />
Zanoni & Pinientel 23420 (MO, NY). San Cristobal: San<br />
Cristobal, a Jina (de Yamasa), 16 km del Parque Central<br />
de Yamasa, Zanoni & Pinientel 23456 (MO, NY); near<br />
Rio Nigua, Lavastre 1845 (NY); near Nigua River, La<br />
Toma, Augo 1693 (NY); E1 Dajao, Bayaguana, Liogier &<br />
Liogier 20185 (NY). JAMAICA. Port Antonio: Hitchcock<br />
s.n. (MO); Fury River, Harris 8361 (NY); John Crow Mts.,<br />
Britton 4126 (NY). Portland: foothills of John Crow Mts.,<br />
W of Ecclesdown, GrayunI et al. 9973 (K, MO). St. Elizabeth:<br />
Frenchman, Proctor 38601 (NY). PUERTO RICO.<br />
Cultivated speciniens. Society Islands. Leeward. Raiatea<br />
Island, cultivated in Uturoa, 17 Dec. 1926, J. t<br />
Moore 451 (MO). U.S.A. Hawaii: Honolulu, Kalihi Valley,<br />
15 Mar. 1956, Harris & Neal s.n. (BISH); Foster Gardens,<br />
3 Mar. 1962, Miyashiro s. n. (BISH); Lyon Arboretum, 10<br />
Sep. 1975, 13. Herbst & S. Ishikawa 5459 (BISH); Oahu,<br />
5 May 1954, Won s.n. (BISH); Honolulu, Kaimuki, 5 May<br />
1954, R. Won s.n. (BISH); Kapalama Heights, Kamehameha<br />
Girls School, 6 June 1932, Judd et al. s.n. (BISH).<br />
Missouri: Missouri Botanical Garden, originally obtained<br />
from J. Henny, Apopka, Henny 7 (MO), Croat 78287 (MO);<br />
13 Sep. 1990, Miller & Schniidt 5551 (MO). Puerto Rico.<br />
Rio Abajo (originally collected by Thonipson 3238), 19<br />
June 1997, Croat 78345 (MO). Hispaniola. Border of PN<br />
Los Haitises, 27 Apr. 2000, Luther s.n. (Holst 6237) (MO).<br />
Grenada. Originally collected by John Criswick, Grenville,<br />
Grenada, 1993, Croat 77298 (MO, VEN). Belize. Cayo:<br />
Nabatunich, near Sukkotz, 17°06'N, 89°W, 24 Jan. 1990,<br />
Balick et al. 2359 (MO). Venezuela. Carabobo: originally<br />
collected by Bunting from a Garden in Valencia, 300-500<br />
m, (Bunting 13515) Croat 78323 (MO, VEN); Jardin Botanico,<br />
Caracas, 19 Aug. 1976, Croat 38344 (MO).<br />
Without exact locality: Engler 2793 (K), Sintenis R 2793<br />
(K), Britton & Britton 9664 (NY), Britton & Britton 7897<br />
(NY); Mariccao, Sargent 643 (MO); Scln Sebastian, Sargent<br />
340 (M()); L>lguna Tortuguero, Howard & Nerling 16978<br />
(A); Quebrcl(la T'rieta, 1Ll Ver(le Field Stcltion in I,uqui]lo<br />
24. Dieffenbachia standleyi Croat, sp. nov.<br />
TYPE: F4ontluras. Laneetilla Botanical Gardens,<br />
ea. 2 mi. WSW of Tela and S of main<br />
hwy., 15°44'N, 87°27' W, 70-90 m, 9 Feb.<br />
Experimental Forest, W si(le of Lu(luillo Mts., W/lilehill 8<br />
(M()); Luquillo Mts., Palrrleer-FIoli(la, klll 28.1, K. W(lA,trler<br />
T58 (A); Rfo At)cljo Stclte Foest, Hwy. ()21, CSlro(ll. 6()867<br />
(M(), INY, I'MAe REA); ktll 21.S orl Rle. 2, W of Cclr(lelclticl,<br />
Solomosl .S761 (M()); Mclytlguf z vi( ., (louell .S.S()<br />
1987, YE B. Croat & D. Hannon 64638 (holotyl)e,<br />
M()-344288t3!; isotypes, B!, CAS!, COI,!,<br />
EAP!, '!, CH!, INB!, K!, MEXU!, PMA!, NY!,<br />
Tl
752 Annals of the<br />
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Figure 24. Dieffienbachia standleyi (Croat 42676). A. Habit of cultivated plant. B. Stem and base of leaves<br />
C. Upper part of stem showing abaxial surface of leaf blade and cluster of inflorescences. D. Close-up of petiole<br />
bases showing the markedly undulate petiole sheaths.
Volume 91, Number 4<br />
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Croat<br />
Revision of Dieffenbachia<br />
brown below; rnidrib slightly paler and flat to sul- Specimens from Nicaragua differ somewhat from<br />
cate and finely paler striped above (especially near those in Honduras, having leaf blades smaller on<br />
the base), sometimes white in distal 2/3, convex to average, ranging from 37 to 69 cm long and 13 to<br />
narrowly rounded, thicker than broad and paler to 31 cm wide (averaging 51 x 22.3 cm), but the<br />
slightly paler below, drying 8-12 mm wide, medium petioles in both areas average 30 cm long. The<br />
yellow-brown, finely ribbed with the ribs minutely Honduran populations have petioles consistently<br />
and obscurely scabridulous on magnification; pri- fully sheathed, whereas plants in Nicaragua often<br />
rnary lateral veins 12 to 24 per side, arising at an have a free portion of the petiole above the sheath<br />
acute angle, then spreading at 40°-65°(70°) angle, ranging from 1 to 9 cm (averaging 4.4 cm long) with<br />
obtusely sunken and weakly quilted, paler toward the petioles only rarely fully sheathed.<br />
midrib above, bluntly angular and + concolorous Blade shape is quite variable. Blades can be<br />
below, drying pale yellow-brown; lower surface with from 1.9 to 2.8 times longer than wide on the same<br />
minor veins moderately obscure, arising mostly plant (e.g., Croat & Hannon 64638). Plants from<br />
from the midrib but also from the primary lateral the Lancetilla Valley in Honduras have proportionveins.<br />
INFLORESCENCES 2 to 4 per axil; peduncle ately longer blades, with some plants having blades<br />
to (7.5)15-29 cm long (averaging 16 cm long), up to 3.2 times longer than wide (Croat 42676).<br />
somewhat flattened; spathe matte, 20-50 cm long Specimens collected at Lancetilla and its surround-<br />
(averaging 28.3 cm long), 1.2-3.1 times longer than ings have blades that range from 1.9 to 3.5 times<br />
the peduncle (averaging 1.6 times longer), 2.5-3.0 longer than wide (averaging 2.5 times longer than<br />
cm diam.; spadix 20-30 cm long (averaging 25 cm wide). Specimens from areas other than Lancetilla,<br />
long); pistillate portion of spadix 12-13 cm long; and outside Honduras, have blades 1.6 to 2.7 times<br />
staminate portion 15-16 cm long. Fruits to 1 cm longer than wide (averaging 2.1 times longer than<br />
long, closely packed, reddish orange to scarlet at wide).<br />
maturity with the spathe light yellow.<br />
A c ollection from Zulia, Venezuela, between l,<br />
Frfa and San Juan de Cold)n (Croat 78289) differs<br />
Ditstriblltion (lnd h(ll)it(lt. Die,t,tenbflchi(l .st(ln- in having the petiole less fully sheathe(l an(l in havdleyi<br />
ranges from Honduras (Atlanti(la, Comayagua, ing narrower bla(les up to 2.6 times longer than<br />
Cortes, El Paraiso, (Jrae ias a l)ios, ()lane ho, Yoro) broa(l an(l drying somewhat less hlackene(l. It may<br />
to Nicaragua (Matagalpa an(l %elaya) at 3()-1()0() [)rove to t)e the same species. If so, it wouI( [)e the<br />
m elevation. Most c ollee tions in Hon(luras were only (:entral American sI)eeies (with the [)ossit)le<br />
made in the lian(etil]a Va11ey.<br />
exce,Dtion of D. killi)ii) that ranges from Central<br />
Phenology. F]owering s)ee imens of D. .st(lndle- Americ a to Venezuela.<br />
yi have been seen from May through Septeml)er, Etynology. Diefjfenl)lchi(l .standleyi was first<br />
although a few flowering c o11ee tions were also made collectecl in 1928 by Paul Standley at Lan(etilla,<br />
as early as February and March. Fruits start to de- Hon(luras. Standley was not only the author of most<br />
velop in February and reac h full size during March c)f the aroid treatments for most existing Central<br />
or April (in Nicaraguan collections) or July-August American floras, but he also described a number<br />
(in Honduras).<br />
of new species of Araceae, as well as collecting<br />
Discussion. The species is characterized by its several paratypes of D. standleyi. The species is<br />
stout stem, fully winged petioles, yellow-brown-dry- named in his honor.<br />
ing ovate-elliptic blades with 12 to 24 pairs of primary<br />
lateral veins, and a long spathe (20-50 cm). Paratypes. HONDURAS. Atlantifla: 5 km S of La<br />
It is most easily confused with D. horichii and may Ceiba, Madison 705 ((;H); near Lancetilla, Yuncker 4961<br />
(F, MO, NY); Lancetilla valley, near Tela, Pfeifer 2124<br />
ultimately prove to be inseparable from that spe-<br />
(US); near Puente Alto stop on S.F. Co. R.R., E of Ceiba,<br />
cies. Dieffenbachia horichii differs in having shorter Yuncker et al. 8551 (F, GH, MO, NY, US); ca. 3 mi. S of<br />
petioles with the sheath involute and moderately Tela, Webster et al. 12581 (DAV); vic. Tela, near Rio Lansmooth,<br />
in contrast to the petiole sheaths erect and cetilla, above Exp. St., MacDougal et al. 3303 (MO, NY,<br />
even curled outward as well as being undulate<br />
US); Tela, ca. 10 mi. SE of Tela along Rio Lancetilla,<br />
Croat 42625 (MO), Croat 42676 (MO), Standley 53146 (F,<br />
along the margins in D. standleyi.<br />
US). Comayagua: Siguatepeque, Standley & Chacon<br />
A collection by Stevens et al. 20998 from Mata- 6701 (F). Cortes: 2-3 mi. SW of Omoa on rd. from Puerto<br />
galpa is unusual in being described as 3 m tall with Cortes to Guatemalan border, Croat 42556 (MO); E1 Para<br />
trunk 1() cm in diameter. Another Stevens col- aiso, Yuscaran, Rio de los Aguacates, Standley 25700<br />
(EAP). Gracias a Dios: Ahuas Bila, 200 km SW of<br />
lection (7457) from Zelaya Department is notewor-<br />
Puerto Lempira, Nelson & Cruz 9291 (TEFH, UNAH, US).<br />
thy in drying darker yellow-brown than other col- Olancho: Catacamas, Standley 18786 (EAP); along Rio<br />
lections.<br />
Olancho, W of main Tegucigalpa-Catacamas Hwy., ca. 1<br />
753
754<br />
Annals of the<br />
Missouri Botanical Garden<br />
km upstream from and NW of Puente Boquer6n, 8.6 mi. throughout (this white coloration continuing onto<br />
SW of Catacamas, 6 mi. SW of Sta. Maria del Real, Croat the midrib), sheathed virtually throughout; sheath<br />
& D. Hannon 64109 (INB, MEXU, MO, TEFH, US); along<br />
Rio Olancho, on rd. Gualaco-San Esteban at Rio San erect to involute (rolled inward throughout in age),<br />
Martin, 19.3 mi. E from Gualaco, 8.7 mi. SW of San Es- free-ending and unequally rounded at apex, proteban,<br />
Croat & D. Hannon 64317 (B, MO, US); Rio Olan- longed to 2 cm beyond the base of blade; uncho,<br />
San Esteban-Bonito Oriental, 19 mi. NE of San Es- sheathed part obsolete or rarely to 1 cm long (when<br />
teban, Croat & D. Hannon 64476 (MO); Refugio de Vida<br />
Silvestre "La Muralla," Nelson & Andino 16247 (TEFH);<br />
evident obtusely flattened); blades ovate to ovate-<br />
Mpio. Jano, 16 mi. NE of La Union along the rd. to Olan- elliptic or oblanceolate-elliptic, (15-)25-48(-63)<br />
hito, Davidse et. al. 35484 (MO). Yoro: near Puente cm long, (8-)15-32 cm wide (averaging 34 x 16<br />
Grande, on a tributary of the Rio Agua (Rio Puente cm), broadest near the middle, sometimes below,<br />
Glande), Blackmore & Chorley4073 (MO). NICARAGUA. frequently above the middle, 1.4-2.5(-3.5) times<br />
Matagalpa: El Tollsa Rd., Neill 1571 (MO); ridge along<br />
td. betw. fJa Dalsta arld La Luna, E of Esquipulas, Stevens longer than wide (averaging 2.1 times longer than<br />
11786 (CAS, M() TEX); Macizos de Penas Blancas, SE wide), 1.9-3 times longer than petioles, spreading<br />
side, drainage ol (ssuebrada E1 (ssuebradon, Hda. San Mar- to erect-spreading, inequilateral, one side 1-3 cm<br />
tin, horder with l)epartmento de Jinotega, Stevens et al. wider than the other, gra(lually to abruptly acumi-<br />
2()998 (MO); Matagalpa-Siuna, 1.5 km al NE de Los Angeles,<br />
Moreno 17/42 (MO); E1 Trebol, 7 km S of Penas<br />
nate, sometimes acute at apex, inequilaterally cor-<br />
T3lancas, rd. to fi l 'luma, Moreno & Robleto 20526 (MO). dulate at base, one side sometimes broadly rounded<br />
Zelaya: Finca Waylawas, Pipoly 4479 (MO, US); Siuna- to obtuse, the other side cordulate, sometimes in-<br />
Matagalpa, ca. 31.4 km beyond Rio Uli (near Wani), ca. equilaterally acute, subcoriaceous, often conspicu-<br />
8.9 km beyond llosa Grande La Balsama, Stevens 7457<br />
ously quilted, moderately l)icolorous; upper surface<br />
(MEXU! MO); Cerro l ivico, 7 km NE of Siuna, Neill 3629<br />
(MO); Rio Sucio, Ed of Bonanza, Stevens 12311 (MO), Ste- usually solid dark to medium green, sometimes<br />
vens 8044 (MO); Res. Bosawas, Bonanza, Cerro Cola Blan- conspicuously to sparsely variegated with pale<br />
ea, vic. Cacerio (le Vitinia, Rueda & Coronado 6557 (MO). green or pale yellow thloughout much of the surface,<br />
the mottling large ol small, but somewhat re-<br />
25. Dieffenbachia tonduzii Croat & Grayum, stricted to the area midwcly t)etween the midrib and<br />
Novon 9: 497. 1999. TYPE: Panama: Bocas del margin, matte to weak]y glossy, sometimes appear-<br />
Toro: Valle del Silencio, along Rio Changuinola, ing weakly velvety, drying glay-green to olive-green<br />
ca. 1 km above mouth of Rio Teribe, vic. Teribe or dark brown; lower surfcl( e much paler and matte<br />
Indian population, disturbed forest among co- to weakly glossy, silvely-gleen, drying yellowish<br />
coa plantations, 9°21 '40"N, 82°31 '40"W, less green to yellow-brown helow; niidrib flat to broadly<br />
than 100 m, 25 June 1994, 1: B. Croat & G. rounded and moderately to strongly paler, pale<br />
Zhu 76452 (holotype, MO-04611212!; isotypes, green or sometimes creanly white above (sometimes<br />
AAU!, B!, BM!, BR!, CAS!, CM!, COL!, CR!, only toward the apex), blutly acute to obtusely an-<br />
DUKE!, F!, GH!, HUA!, INB!, ITIC!, JAUM!, gular and paler, sometillles white or creamy white<br />
K!, L!, LE!, M!, MEXU!, NY!, P!, PMA!, below, (0.6-)1-1.7 cm wi(Se; priniary lateral veins<br />
QCA!, QCNE!, R!, RSA!, S!, SCZ!, SEL!, (14 to)l8 to 25(to 30) per side, arising at an acute<br />
TEX!, UB!, US!, VEN!, WU!). Figures 25, angle and spreading at 45°-90°, sometimes reflexed<br />
29B.<br />
toward the base, promillently to weakly and obtusely<br />
sunken above, convex to weakly raised and<br />
Terrestrial herb, 0.5-1.5 m tall, usually to less darker than surface or concolorous below, some of<br />
than 1 m tall; internodes 1.5-4.5(-6) cm long, 1.5- the lowermost with a weak fold near the base (Croat<br />
3(-4.5) cm diam., usually solid dark to medium & GrayunI 60112), somelillles convex-pleated begreen,<br />
sometimes faintly marbled with gray-green low; interprimary veins almost as conspicuous as<br />
or yellowish gray throughout (on plants that also the primaries; minor veins moderately to distinctly<br />
have streaked petioles), initially weakly glossy, be- visible, darker than surface below. INFLOREScoming<br />
semiglossy to glossy, often with a subvelvety CENCES 1 to 2(to 4) per axil, often with two orisheen;<br />
petiole scars manila to white, curved down- ented in opposite directions; peduncle (3-)6-17 cm<br />
ward on the opposite side of the stem and ending long (averaging 10.3 cm long), 7-8 mm diam.,<br />
unevenly; petioles 10-24 cm long (averaging 17.6 weakly glossy, dark to medium green, sometimes<br />
cm long), held + erect, medium green (except with pale yellow-green streaks; spathe (12-)15-28<br />
sometimes white to pale green at base), almost cm long (averaging 20 cm long), 2-4 times as long<br />
matte to weakly glossy, weakly striate (especially as peduncle, acuminate at apex, convolute to about<br />
near the base), narrowly rounded to obtusely an- the middle in lower part, matte to weakly glossy<br />
gular on abaxial surface and often white medially, outside, glossy within, solid medium green on both<br />
sometimes streaked in a variegated pattern surfaces, gradually and weakly constricted some-
Volume 91, Number 4<br />
2004<br />
Croat<br />
Revision of Dieffenbachia<br />
Figure 25. Diegenbachia tonduzii. A. Close-up of stem, showing both creeping and erect portions. B. Habit<br />
with inflorescences and variegated blades. C. Crown of plant with open inflorescence. D. Close-up of stem showing<br />
petioles streaked with creamy white. E. Close-up of stem showing solid green petioles. F. Close-up of spathe with<br />
the blade portion open (Croat & Zhu 76452¢ type plant). G. Inflorescence open to show upper male flowers and<br />
lower portion of spadix with pistils and staminodia (Croat 66533). A, B, C. (Croat & Zhu 76452¢ type plant); D, E.<br />
(Croat 76450).<br />
755
756<br />
Annals of the<br />
Missou ri Botanical Garden<br />
what above the middle; spathe tube 1.5-3 cm diam. Because of the fully sheathed petioles it can be<br />
when closed, 6.8-9 cm wide when flattened; con- confused only with D. horichii and D. crebripistilstricted<br />
area 4.3-4.5 cm wide flattened; spadix (9- lata. Both of the latter typically have much larger<br />
)16.5-25.5 cm long, about as long as or up to 3.0 leaves that are not at all cordulate at the base<br />
cm shorter than the spathe; free portion 7.8-8.5 cm (though they are rarely broadly and weakly subcorlong;<br />
pistillate portion (4.8-)6-11.5 cm long; mostly date). Dieffenbachia tonduzii is polymorphic with<br />
sterile portion sparsely flowered to naked (rarely regard to leaf markings in the same way as D. oerlacking,<br />
as in Croat 70768), 1.8-4.0(-8.5) cm long stedii, and is quite variable in all respects. It apwith<br />
0.6-1.5 cm totally bare, the uppermost portion pears, in Panama, to hybridize with D. oerstedii.<br />
with a few staminodia, sometimes with a few scat- Croat & Zhu 76857C from the vicinity of Santa Fe<br />
tered staminodia throughout, the lower half some- in Veraguas Province is apparently a hybrid with<br />
times with an occasional pistil and much reduced characteristics intermediate between D. tonduzii<br />
staminodia, rarely with the female flowers + equi- and D. oerstedii.<br />
distant and nearly contiguous with staminate part The species is similar to D. daguensis, a Col-<br />
(Croat 70768); fertile staminate portion (4-)5.5-10 ombian species described from less than 200 m<br />
cm long, 7-10 mm diam., slightly broader midway, elevation on the Rio Dagua in Valle Department.<br />
weakly tapering to apex and base, bluntly pointed That sl)ecies also has many rather close primary<br />
at apex; staminate flowers 5 to 6 per spiral, + lateral veins and a fully sheathed petiole but differs<br />
rounded in outline, crenulate along margins, trun- in having the staminate and pistillate sections of<br />
cate at apex; sterile male flowers irregularly the spa(lix contiguous or nearly so. In addition, it<br />
shaped, 1.8-2.5 mm diam.; pistillate portion of spa- differs in having much shorter petioles (described<br />
dix to 11 cm long, 9-10 mm diam.; female flowers as being up to 5 cm long).<br />
(15 to)48 to 62, closely aggregated except in the A South American species, D. parlatorei Linden<br />
upper 1.5 cm of spadix, 4 to 5 across the width of & An(l re, also sometimes has petioles fully<br />
the spadix (upI)ermost pistil borne on an almost sheathe(l, but differs from D. tonduzii in having leaf<br />
bare segment of the spadix); pistils pale cream-yel- blades usually broadest al)ove the middle, semilow<br />
to pale yellow-green, smooth, 2.3-3.5 mm glossy on the lower surface, and the midrib often<br />
diam.; style (after stigma has fallen) sharply cupu- broadly l ounded and spongy. It also has the primary<br />
liform, 1.5-1.7 mm diam. with a single central lateral veins arising at a 40°-60° angle from the<br />
pore; stigmas yellow; staminodia clavate, white, 2- midrib (often at more than 60° and sometimes up<br />
3 mm long, mostly contiguous and sometimes fused to 90° in D. tonduzii).<br />
at base. INFRUCTESCENCES with spathe pale Cro(ll 70900, from 250 m in Choco Department<br />
yellow; berries red to red-orange, 5-8 mm diam. of Cololllbia appears to be D. tonduzii but differs<br />
in sevelal ways. It has leaves with the midrib flat-<br />
Distribution and habitat. Dieffenbachia tondu- raised aI)ove with the margins undercut. It also has<br />
zii ranges from southeast Nicaragua throughout stems that appear scurfy (though weakly glossy if<br />
Central America to the Pacific slope of Colombia rubbed clean). Another difference is that the petiole<br />
(Antioquia, Choc6, Cauca, Valle) and Ecuador (Es- sheath is more prominently free-ending and submeraldas,<br />
Loja, and Los Rios), from sea level to acute at the apex. In addition, the free portion of<br />
1400 m, in Tropical wet forest (T-wf) and Premon- the petiole is broadly and sharply sulcate.<br />
tane rain forest (P-rf) in Central America and in<br />
Tropical wet forest (T-wf) and Premontane wet forest Additio/lal specimens examined. COSTA RICA. Alajue-<br />
(P-wf) and Tropical wet forest transition to Premon- la: rd. to Colonia Virgen del Socorro, Rfo Sarapiquf, Stevens<br />
13564 (MO), Croat 68336 (CR, MEXU, MO, TEFH); Cantane<br />
(T-wf/P) in Colombia.<br />
t6n de Alajuela, Grayum & Murakami 9939 (CR, MO); Fin-<br />
Phenology. Flowering in D. tonduzii occurs ca Los Ensayos, ca. 11 mi. NW of Zarcero, Croat 43629<br />
throughout most of the year with flowering collec- (CM, MO); Canas-Upala, 10 km N of Bijagua, Croat 36472<br />
tions seen from February through November. Most (MO); Rfo Zapote, Canas-Upala, Rfo Zapote, 4 km NNE of<br />
Bijagua,<br />
collections have been made from April through Au-<br />
Croat 36260 (MO); Cordillera de Tilaranv San Ram6n-Bajo<br />
Rodrfguezv Rfo Cataratitas, Croat 68097 (INBv<br />
gust. According to the collections, fruits mature MO); Cordillera de Tilaran, San Ram6n-Bajo Rodrfguez,<br />
throughout the year but with the greatest concen- vic. of km 19.5 NW of San Ram6n, Croat 78838 (MO); 17tration<br />
from October to January.<br />
20 km NNW of San Ram6n by rd. on way to San LorenzoS<br />
The species is characterized by its fully sheathed 4-7 km N of Balsa, Ljiesner & Judziewicz 14797 (CRv MO);<br />
San Ram6n-Bajo Rodrfguez, 3S37 km NW of San Ram6n,<br />
petioles, usually matte to weakly glossy, sometimes<br />
Croat 68196 (CMS MO, W); Naranjo-Aguas Zarcas, along<br />
weakly velvety blades with cordulate bases and nu- Hwy. 15, 8 km NE of Quesada, Croat 46945 (K, MO, PMA);<br />
merous, broadly spreading primary lateral veins. Arenal Volcano, Funk et al. 10626 (CR, US), Funk et al.
Volume 91, Number 4<br />
2004<br />
Croat<br />
Revision of Dieffenbachia<br />
10718 (CR); San Ram6n-Fortuna, ca. km 25, D. Smith et (CR, INB, MO) Puntarenas: Cordillera de Tilaran, Bosque<br />
al. 1059 (DUKE, MO); Cordillera de Guanacaste, Montev- Eterno De Los Ninos, Laguna Poco Sol, 18 km ENE of<br />
erde, San Gerardo Biol. Sta., 1.5 km NE of Station, D. Monteverde, Haber et al. 10824 (CR, INB). San Jose: Can-<br />
Penneys 633 (CR, INB, MO); Cordillera de Tilaran, Bosque<br />
Eterno De Los Ninos, Rio Penas Blancas, Laguna Poco Sol<br />
on del Rio Grande de Orosi, Chacon et al. 1488 (CR, MO);<br />
La Hondura, Standley 36314 (US); Vazquez de Coronado,<br />
Haber & Zuchowski 11175 (CR, MO). Cartago: Tucur- Braulio Carrillo NP, along Hwy. San Jose to Siquirres, along<br />
rique, Tonduz 12874 (G, US); Rio Naranjo, Finca E1 Cedral,<br />
Orosi, Lent 4042 (F, MO, NY, SEL); La Vuelta, Tucurrique,<br />
trail to Rio Sucio, site of the Old Carillo Station, Croat<br />
78787 (MO). NICARAGUA. RSo San Juan: "Los Filos"<br />
Tonduz 503 (US); 1.5 mi. E of Cachi, 10.2 mi. NE of jet. near Loma Los Filos, Rio Santa Cruz, Salick 8153 (MO).<br />
at Paraiso, Croat 47088 (MO); along Camino Raiz de Hule, Zelaya: ca. 6.3 km S of bridge at Colonia Yolaina and ca.<br />
SE of Platanillo, Croat 36727 (MO), Croat 36747 (MO), 0.8 km S of ridge of Serranias de Yolaina on rd. to Colonia<br />
Croat 36821 (MO); Cant6n de Turrialba, Rio Reventazon, Manantiales, Colonia Somoza, Stevens 6420 (MO); Rio Pun-<br />
CATIE, Turrialba, Grayum et al. 9469 (CR, MO, NY), 3<br />
km E of Turrialba "Los Espaveles" nature trail, Rio Reventa<br />
Gorda, Atlanta, mouth of Cano el Guineo, Moreno &<br />
Sandino 12855 (MO), Moreno & Sandino 12891 (MO); Rio<br />
taz6n, Liesner et al. 15330 (MO); Turrialba, Instituto Inter- Punta Gorda, Atlanta, Cano Negro mouth of Rio Chiquito,<br />
am., Lent 639 (F), Lent 694 (F); 12 km S of Turrialba by<br />
air, 4 km SE of Pejibaye along Rio Gato, Liesner 14394<br />
Moreno & Sandino 12917 (MO); Rio Punta Gorda, Atlanta,<br />
mouth of Cano del Oro at Rio Chiquito, Moreno & Sandino<br />
(MO); Tres Equis, 1.5 km E of Turrialba-Lim6n Hwy., Lies- 12955 (MO); Rio Punta Gorda, Cano E1 Guineo, Tellez et<br />
ner et al. 15365 (MO); PN Tapanti, Oropendola trail, Nilsson al. 4875 (MEXU, MO). PANAMA. Bocas del Toro: Limit<br />
et al. 632 (CR); Oropendola trail, Nilsson et al. 377 (CR); trail, Parque Intl. La Amistad, from Quebrada Boca Chica<br />
Monumento Nacional Guayabo, Perez 1 (CR); Monumento to Quebrada Bonyic, Polanco 1615 (PMA); 7.7 mi. W of<br />
Nacional Guayabo, Santa Teresita, Rivera 1718 (CR, K).<br />
Guanacaste: E1 Arenal, Standley & Valerio 45262 (US);<br />
Chiriqui Grande, 1.5 mi. W of Punta Pena, Croat & Grayum<br />
60112 (CR, MEXU, MO, PMA); Chiriqui Grande-Fortuna,<br />
E1 Real, Standley & Valerio 45206 (US); Cordillera de 13.2 mi. W of Chiriqui Grande, Croat & Grayum 60139 (B,<br />
Guanacaste, Rinc6n de la Vieja, near refugee camp, along MO, PMA); Fortuna-Chiriqui Grande Hwy. near Cont. Div.,<br />
rd. NW of Quebrada Grande, Barringer et al. 4039 (F). 1.1 mi. from main hwy., Croat & Grayum 60355 (MO);<br />
Heredia: E of San Ram6n, Loiselle 106 (MO), Porto Viejo- Chiriqui Grande-Fortuna, above waterfal1, 1.6 mi. N of<br />
Rio Sucio, Croat 35753 (F, MO, PMA); La Selva, Puerto Cont. Div., Croat & Zhu 76450 (CR, MO, PMA, SCZ, US);<br />
Viejo de Salapiqui, Croat 44317 (MO); I, Selva, OTS Field<br />
Station on the Rso Puerto Viejo just F, of its j(t. with the<br />
Changuinola, near IJuzon, Kenz1edy.X253 (MO); Changuinola-Altnirante,<br />
Mile 7.5, Cro(lt & I'orter 16249 (MO); (7ual-<br />
Rso Sarapiquf, H(lmmel 8874 (l)UKk, 11, M()), (Jr(lyalrrl a( a-(4hiriqui (7ran(1e, 6.6 trsi. N of bri(lge over Fortuna<br />
278() (I)UK1 , M()); 1, Selva, 6 kns l)y r(l. frorls Rlo l)PjE I,ake, Cro(lt 667XS (M()); (/uala( a-(3hiriquf (7rande, 1.6 mi.<br />
crossing S krs StSk, of Masasay, 5C'/I(I/.Z & (Jr(lyllm 7()6 N of Corst. I)iv., Cr()(lt 749X() (M()); (Juala( a-Chiri(ui<br />
(DUKId); lvuello Viejo just 1d of j( l. with Rfo SaIay)i(Uf,<br />
Folsom 1()116 (I)UK19); ()( ( i(lerstal tail, Kr(^.sx 84-16X()<br />
(lran({ee, X.1 rrsi. S of l'unta l'eena (Jro(lx 749H (MO); N of<br />
Forluna l)arls, M(lther.s()sl 11 129 (M()); r(s. to (Chiri(uf<br />
(SEl,); Rfo S[J(*io rseeal lvolto viPj0, (>ro(lt .XT682 (M()); Zona (^ran(le, M(l'hers0s1 7X71 (M()); 5.t-3 rlsi. N of 11orturla l)arrs,<br />
Protee(tola N slo^)es of Vol( airs 13ar1)a, })etw. Itio l)PjE All(l<br />
Rio (lUa( illso (,r(lyaltll & KSlhel.z W174 (I)U K11,). Lilllon:<br />
the.n 1.4 nsi. W alorlg gravel r(l. lo (Lorst. I)iv. trail, (ro(lt &<br />
X,hll 76X28 (M(), I'MA); along CoIsl. I)iv. trail, M(l'llersos<br />
along hwy. :32 {lorls Turriall)a to l,ills(5rl ( a. 11 rlsi. S of<br />
Siquillees (>ro(lt 4X.X@S (IS(E, M(), l'MA, WlA(2); (^uapiles<br />
6W65 (M()); tortuna l)ans-(Chili(uf (7lan(1ee, I mi. fronl Corst.<br />
I)iv., Chllrf hill & Cllllrcl1ill 62tH (M()); ltio (Cri( ansola, Firs-<br />
I,eosl 72?() (11'); (^Ua)ile.s, 'loro Aurarillo, lJeos1 26573 ((LIt), a St. l,ouis-KorlkirltoeX W)o(lsosl Jr. (t (ll. 79()9 (t, M()).<br />
Fin( a Arlai, at he.a(1waters of (Juebra(la Mata (lee l,irls6n, W<br />
of Mata (se T,inson (Sixaola legion), (Jr(lyun1 & Schfltzt5279<br />
Chiriqui: (7ua1a( a-11'orturla l)ans, 1 () rlsi. NW of Los Planes<br />
de Hornit(, Crc)(lt 50()49 ((2R, M()); vi(. 11ortuna l)am Of<br />
(CR, M()); 11irs(a Castilla, Do(Ige & Coerger (9489 (M()); 7 ltio Chiriqui, Croat 66533 (B, CM, lEl\CT3, l)UKIL, KY(),<br />
km SW of BriT31i, 1,. Gomez et al. 2()405 (B, MO); (Iraitlage I., MO, NY, OOMOT(), (2CA, SAIt, TkzX, US); 4.5-5 km<br />
of Rio Parisnlirla and Ri() Reventazon, Sht1k & Molina<br />
4288 (l)UKkJ); 1() mi. S of Punta Cahuita, ca. 3 mi. S of<br />
N of Fortuna l,ake, Croat & GrKlyum 60070 (INB, MO); 7.9<br />
mi. I)eyond (NW of) I,os l'lanes de Hornito, Croat 499.W<br />
turnoff to BrilXri, Croat 43201 (MO); Ref. IJarra del Colo- (MO); (ualaca-Bocas del Toro bolder, km 111, Gordon 3369<br />
rad(, Rfo Chirrip6cito-Rio Sardina, Grayum 9804 (CR, (PMA); lE ortuna Dam site N of Gualaca, 7.7 mi. beyond Los<br />
MO); Par. Tortuguelo, Est. Biol. Agua Frfa, Sendero Las Planes de Hornito, Croat 48778 (MO). Cocle: vic. E1 Valle<br />
Lomas, 5 km from station, Robles 1142 (CR, MO); Sendero de Anton, La Mesa, Finca Macarenita, Croat & Zhu 76653<br />
Los Ralldales, 8 km .SF, from station, Robles 1158 (CR (BM, C, FSU, GOET, INPA, ITIC, L, LE, MO, QCA, PMA<br />
MO); PN Tortuguero, Lomas de Sierpe, 4 km NE of station R, TEFH, UB). Darien: Mamey, Whitefoord & Eddy 372<br />
along Rfo Sierpe, Robles et al. 2050 (CR, G, MO); Tortu- (BM, MO, PMA). San Blas: Rio Armila, 10 km WSW of<br />
guero Cant6n, BriBri-Suretka, Barringer 3525 (CR, F); Res. Puerto Obaldia, Mori et al. 6814 (MO). Veraguas: valley<br />
Indfgena Talamanca, Sukut, mouth of Rfo Sukut at Rfo of Rio Dos Bocas, 11 km from Escuela Agricola Alto Piedra<br />
Uren, Hammel et al. 17548 (CR, MO); Rfo Reventaz6n, (above Santa Fe) on rd. to Calovebora, Croat 27490 (MO);<br />
Finca Montecristo below Cairo, Standley & Valerio 48997 NW of Santa Fe, 11 km from Escuela Agricola Alto de<br />
(US); Rfo Segundo, Asunci6n, L. Go'mez & Herrera 23477 Piedra, in valley of Rio Dos Bocas, Mori et al. 3817 (F,<br />
(MO); Rfo Sixaola, BriBri-Caribbean coast, Baker & Burger MO); 0.6 mi. beyond Escuela Agricola Alto Piedra, Croat<br />
90 (F, MO); Lim6n-Shiroles, Rfo Sixaola, 0.9 mi. SW of & Folsom 33989 (MO); 1.7 mi. past Alto Piedra School,<br />
Bambu, 6.5 mi. SW of BriBri, Croat 43298 (MO); Rfo Six- Croat & Zhu 76858 (MO, PMA); beyond Escuela Agricola<br />
aola, ca. 0.5 mi. SW of Bambu, ca. 3 mi. NE of Bratsi, Alto Piedra, Croat 49070 (MO); 3-5 mi. N of Santa Fe,<br />
Croat 43266 (CR, MO); Tortuguero Cant6n, BriBri-Sixaola, Gentry 3035 (MO); vic. Escuela Agricultura Alto Piedra<br />
NW of Paraiso, Barringer et al. 3479 (CR, F); Cordillera near, Antonio 2994 (MO); 0.6 mi. beyond Escuela Agricola<br />
de Talamanca, headwaters of Quebrada Kakebeta below di- Alto Piedra, Croat & Folsom 34042 (MO); Cerro Tute revide<br />
between Rio Xikiari and Rio Boyei, Grayum 10858 serve, along ridge to summit, Croat 66993 (HUA, MO,<br />
757
758<br />
Annals of the<br />
Missouri Botanical Garden<br />
PMA); trail to top of Cerro Tute, Croat 48903 (MO, PMA); de Bimbe, Croat 57000 (CM, MO); Centinela, 12 km E of<br />
Cerro Tute, Sytsma & Antonio 3006 (MO). COLOMBIA. Patricia Pilar on border with Los Rios, Gentry 26705 (MO);<br />
Antioquia: Murri, La Blanquita, Rfo Murrf, Transect 7, Centinela, Montanas de Ila, 13 km E of Patricia Pilar, ca.<br />
Gentry et al. 75903 (MO); Villa Arteaga, Gutierrez, G. &<br />
Barkley 17115 (COL); PN Natural "Las Orquideas," Ven-<br />
54 km S of Santo Domingo, Hammel & Trainer 15836 (MO).<br />
ados arriba, Rfo Venados, A. Cogollo et al. 3462 (JAUM,<br />
MO); Mutata, Rfo Chontadural, Hacienda E1 Darien, Fonrl.egra<br />
1344 (HUA); Carepa, Est. Exp. de Tulenapa (CA),<br />
(>(llle.j(l.s et al. 9704 (NY). Choco: Serranfa de Baudo, Las<br />
Anilllas-Pato, Rfo Pato, ca. 4 km SW of Pato, Croat 56112<br />
(Cl-f()CC), JAUM, K, MO); Medellfn-Quibdo, km 208.5, 9<br />
kls W of Tutunedo, ca. 9 km E of Quibd6, Croat 56205<br />
26. Dieffenbachia wendlandii Schott, Oesterr.<br />
Bot. Z. 8: 179. 1858. TYPE: E1 Salvador. Santa<br />
Ana, H. Wendland s.n. (holotype, GOET!).<br />
Figures 26, 28B.<br />
(CH()CO, COL, CUVC, HUA, MO); Quibd6-Medellfnv km<br />
Stout herb, to (0.8)1.2-2(3) m tall; sap strong and<br />
103z). 14 km E of Tutunendo, Croat 56282 (CHOCO, COL<br />
JAUM, MO, PMA); San Jose del Palmar-Novita, vic. Santa foul-scented (only weakly foul-scented in some At-<br />
Rosa, (>roat 56625 (COL, HUA, MO); Quibdo-Medellfn, 25 lantic slope populations); stems erect, decumbent<br />
,l,i. E of Quib(l6, (>roat 52300 (F, MO, PMA); ca. 2 km E at base; internodes dark green to blackish green or<br />
of Playa de Oro, Croat 57427 (CHOCO, MO); Pueblo Rico medium green, glossy to semiglossy, 1-5 cm long,<br />
(Risalalda)-Istmina (Choco), Quebrada Anton, 15 km W of<br />
Santa Cecilia, 6 km SV of Choco-Risaralda border, Croat<br />
2-5.2 cm diam.; petioles (11.5)16-32(65) cm long<br />
7()S*()0 (MO); Me(lellfn-(Juibdo, 85 km W of Bolfvar, Croat (averaging 25 cm long), matte, medium dark green,<br />
46).X1() (MO); Ae andi-Serranfa del Darien, Juncosa 619 sometimes finely darker green-striped throughout<br />
(M()); Pueblo Ri(o (Risaralda)-Istmina (Choco), 1 km W of (or at least near the base), often weakly glossy to-<br />
(,tlulato and Rio Guarato at Risaralda and Choc6 border,<br />
ward the apex, moderately spongy, obtusely and<br />
(vro(lx 70868 (CM, MO); Nuquf, Quebrada Chaquf, Galeano<br />
46()() (MO); Arusf, E1 Amargal, trail to Arusf, Mora 51 shallowly sulcate (sometimes more acutely sulcate<br />
((j()I,), Croat & Mor(l 83696 (MO); Quibdo, Tutunendo-Alto near the apex) to D-shaped, sometimes with a slen-<br />
({e1 Viente R(l., 25 km N of Quibdo, Callejas & Jangoux der erect margin or often terete in populations in<br />
26t (HUA). Narillo: Rfo Timbiquf, Lehmann 8876 (K); easteln Mexico, sheathed (0.3)0.5-0.9 their length;<br />
vtllley of Rfo Im})i, l'asto-Tumaco, vic. "Palmar" 3 km NW<br />
ol Rie aulte, ca. 1 knl E of Texas Gulf Pipeline Maintenance<br />
sheath (6)12-30(45) cm long (averaging 18 cm<br />
Station, Rfo Inll)i, C8roat 71461 (MO). Risarallla: Pueblo long); sheath sometimes markedly undulate on that<br />
Ri(o, Santa Ce(ilia, Quebrada La Calera, Betancur et al. portion clasping stem, inc urled throughout its<br />
3()54 (MO). Valle del Cauca: Cali-Buenaventura, Lobot,tlerrero-Cisneros,<br />
Quebrada la Guinea at 1.2 kln E of Ciseros,<br />
Croat 62831 (COL, HUA, MO, UB); vic. Queremal,<br />
llfo Cava, Croat & Gaskin 80391 (CUVC, MO); Cordillera<br />
()(cidental, Rfo Digua, Cuatrecasas 15053 (US); Bajo Callength<br />
with the margins incurled to erect and<br />
touching or well-spaced, initially decurrent or nearly<br />
so at the apex and with one side completely hiding<br />
the other from above the middle, sometimes<br />
ima, Buenaventura-Malaga, km 51.3, Croat 71017 (MO); with the margins somewhat erect and eventually +<br />
lAuenaventura-Malaga, Pulpapel facilities at km 9, Croat emarginate with one side rounded, the other side<br />
70099 (MO). ECUADOR. Esmeraldas: San Lorenzo, Rfo<br />
Palavi, vic. AWA encampment, Hoover et al.<br />
rounded and somewhat free-ending, rarely with the<br />
3161 (MO);<br />
Awa camp to Rfo Palavf, Hoover et al. 3968 (MO); Lita-San apex })roadly rounded and free-ending; unsheathed<br />
l,orenzo rd., 14.2 km W of Rfo Lita Bridge (below Lita), portion of petiole (1)3.5-12(24) cm long (averaging<br />
Croat et al. 82305 (MO); 17.3 km E of Rio TululbfX Croat 8 cm long), terete or thicker than broad, 12-14 mm<br />
83126 (MO, WU); 33.0 km E of Gasolinera San Lorenzo,<br />
diam., 13-15 mm thick, usually obtusely sulcate<br />
Rfo San Jose, 1.1 km N Lita-San Lorenzo rd, Croat 83889<br />
(AAU, F, GB, MO, NY, QCA, S); Lita-San Lorenzo Rd., 1.2 except terete in some areas on the Atlantic slope<br />
km W of E1 Durango, 21.1 km W of Alto Tambo, Croat et of Mexico (the sulcus sometimes broader toward the<br />
*11. 82441 (MO, QCNE); Lita-Carondelet Rd., km 16, apex); blades narrowly ovate to ovate-elliptic,<br />
Schwerdtfeger 21422 (MO); Bilsa Biol. Res., Montanas de (15)20-55(65) cm long, (9)10-22(28) cm wide (av-<br />
Mache, 35 km W of Quininde, 5 km W of Santa Isabela,<br />
eraging 35 x 17 cm), 1.3-2.4 times longer than<br />
Pitrnan & Bass 995 (MO, QCNE); Fila de Bilsa, 7 km E<br />
of San Jose de Bilsa, ca. 80 km due SW of Esmeraldas, 12 broad (averaging 2 times longer than broad), subkm<br />
SE of E1 Salto on Atacames-Muisne Rd., Gentry et al. coriaceous to moderately coriaceous, acute and<br />
72955 (MO); Eloy Alfaro, comuna de Corriente Grande (Rfo<br />
Chimbagal, tributary del Cayapas), Yanez et al. 1387 (MO);<br />
Res. Ecol. Cotacachi-Cayapas, Charco VicenteS Rfo San Miguel,<br />
Palacios & Tirado 11287 (MO, QCNE); Quininde,<br />
Herrera-Los Monos, headwaters of Rfo Aguacatal, Palacios<br />
13626 (CM, MO, QCNE, US); NE of Las Golondrinas, Sitio<br />
apiculate to abruptly or gradually acuminate at<br />
apex (sometimes rounded and apiculate), acute to<br />
obtuse or rounded and attenuate at base, sometimes<br />
rounded to subcordate, slightly inequilateral, one<br />
side 0.8-3.0(4.5) cm narrower than the other; upper<br />
La Bella Jungla, Cooperativa Unidos Venceremos, Palacios<br />
11452 (MO, QCNE). Loja: Rfo Pichima, Forero 719 (COL,<br />
MO). Pichincha: Rfo Palenque Science Center, halfway<br />
between Quevedo and Santo Dominga de los Colorados,<br />
Gentry et al. 24700 (MO); rd. E of Santo Domingo-Quevedo<br />
rd. (beginning 10.S km N of Patricia Pilar), Caserfo Palmar<br />
surface dark green, semiglossy to weakly glossy,<br />
drying gray-green to yellow-brown; lower surface<br />
paler, matte or nearly so, drying yellow-green to<br />
yellow-brown (both surfaces dark yellow-brown on<br />
very old specimens); midrib flat to broadly sunken
Volume 91, Number 4<br />
2004<br />
Croat<br />
Revision of Dieffenbachia<br />
Figure 26. Dieffenbachia wendlandii. A. Habit, plant with open inflorescence. B. Adaxial blade surface. C.<br />
Potted flowering plant with open inflorescence (Croat 39749). D. Open inflorescence at anthesis (Croat 47219).<br />
E. Staminate portion of spadix and spathe blade. F. Close-up of spathe showing part of pistillate portion, the mostly<br />
sterile portion and the base of the staminate portion A, B. (Croat 47219); D, E, F. (Croat 47219).<br />
759
760<br />
Ez D. fosten (0, -8 ' ; < * ( \<br />
Annals of the<br />
Missouri Botanical Garden<br />
86° 85° 84° 83° 82° 81° 80° 79O -78°<br />
,$ ''''-- / - X A<br />
11°- X * 'd'§i, 11°<br />
4' ,, tT<br />
10°- 8 \ 10°<br />
< A 0 \+X < ,<br />
9O * D. aurantiaca X X L,> 'X,> < 9O<br />
8° A D. horichii
15°- * D. galdamesiae ^ (, < 15<br />
Volume 91, Number 4<br />
2004<br />
Croat<br />
Revision<br />
of Dieffenbachia<br />
-<br />
85° 84° 83° 82° 81° 80° 79° 7 18° 77° 76°<br />
11° i e A 11°<br />
10°-< \ -10°<br />
B + ' ' FS, s 8<br />
* D. fortunensis f S<br />
A 100 o 100 Kilometers <<br />
_ j d<br />
85° 84° 83° 82° 81° 80° 79° 78° 77° 76° .<br />
1010° 85° 80° 75° _ 70° 65°<br />
10°- 9 _ X -10°<br />
S D. beachiana 2 * ¢<br />
* D. killipii f 4 X<br />
A D. standleyi n<br />
N<br />
l l<br />
70° 65°<br />
Figure 28. Distribution map. A. Dieffenbachia concinna, D. fortunensis, D. galdamesiae, and D. isthmia. B.<br />
Dzeffenbachia beachiana, D. killipii, D. standleyi, and D. wendlandii.<br />
to flattened and concolorous to weakly paler above<br />
with fine, close, slightly paler striations, convex to<br />
round-raised or narrowly rounded and slightly to<br />
moderately paler beneath, usually faintly striate,<br />
drying somewhat orange-tinged and paler than the<br />
;.<br />
761<br />
surface, 5-10(18) mm wide; primary lateral veins<br />
(6)7 to 11(13) per side, weakly and obtusely quilted-sunken<br />
above, convex, weakly pleated-raised<br />
beneath, arising at an acute angle then spreading<br />
at (40°)55°-70° angle, slightly paler than surface<br />
.
762<br />
, C72<br />
89° 86° 83° 80° 77° 74°<br />
l l l l l l<br />
10o- }aN tra Ft<br />
7°- < A *-<br />
* D. Iongispatha < *<br />
* D. piffieri t t<br />
* D. tonduzii t t<br />
4°- >l<br />
H<br />
200 0 200 Kilometers t<br />
Annals of the<br />
Missouri Botanical Garden<br />
'0 B .?'.<br />
oo<br />
n z r t<br />
X<br />
z |<br />
AX<br />
><br />
89° 86° 83° 80° 77° 74°<br />
Figure 29. Distribution map.-A. Dieffenbachia obscurinervia and D. oerstedii. B. Dieffenbachia longispatha, D.<br />
pittieri, and D. tondazii.<br />
when fresh, usually drying darker than surface, closely parallel marginal veins that do not form a<br />
sometimes lighter than surface7 moderately straight collective, minor veins on lower surface moderately<br />
or weakly curved to near the margin then gradually obscure on fresh material7 more prominent and<br />
curved upward along the margin to form a series of darker than surface on drying. INFLORESCENCE<br />
.<br />
71 °<br />
.<br />
-10°
Volume 91, Number 4<br />
2004<br />
a-<br />
Croat<br />
Revision of Dieffenbachia<br />
75° 7p° 6 15° 6p° 5 15° 59° 4 15°<br />
15°-< t i<br />
; f _ V * D. seguine<br />
B ), R . fi.<br />
80° 75° 70° 65° 60° 55° 50° 45°<br />
Figure 30. Distribution map. A. Dieffenbachia nitidipetiolata and D. panamensis.-B. Dieffenbachia seguine.<br />
1 to 4 per axil, bracteoles to 25 cm long, peduncle<br />
(7)12-22 cm long, 1-1.5 cm x 0.8-1.3 cm diam.,<br />
subterete, pale medium green, weakly glossy, faintly<br />
and finely striate-streaked, spathe (16)25-32 cm<br />
long, narrowly acuminate to cuspidate-acuminate at<br />
apex (the tip turned back), medium-green, weakly<br />
glossy to semiglossy outside, equally colored and<br />
glossy within with weak, darker, short oblique lines<br />
running between the parallel vertical veins<br />
throughout the length of the spathe, the spathe tube<br />
rs<br />
763<br />
-20°<br />
-15°<br />
-10°<br />
S12 cm long, (2.7)3.5 1.5 cm diam. when furled,<br />
6.5-12.5 cm wide when flattened, with dense minute<br />
depressions scattered throughout the tube,<br />
constricted portion of spathe (2)3.3-4.0 cm wide,<br />
3.5-8 cm wide when flattened; spathe blade 3.7-<br />
4.5 cm wide, flattening to 3.3-6.3 cm wide, spadix<br />
(12)1>29.3 cm long, 2.0 1.7 cm shorter than the<br />
spathe, scarcely protruded forward, its stipe 1-2 cm<br />
long, 1.3 cm diam., the free portion of the spadix<br />
9-11 cm long, pistillate portion (5.5)8.5-10 cm<br />
-5o
764<br />
Annals of the<br />
Missouri Botanical Garden<br />
long, 1.2-1.7 cm diam., 0.9-1.1 cm on drying (ra- til August or rarely September. What appears to be<br />
chis 0.9-1.2 cm diam.), the upper 1 cm sometimes a secondary flowering period may occur in the early<br />
with as few as two apparently fertile flowers, sta- dry season because flowering collections have been<br />
minate portion of spadix (7)9-16 cm long, the fer- seen in December and February. Most fruiting<br />
tile staminate portion (4.5)7-12.5 cm long, gradu- specimens have been made in the dry season and<br />
ally tapered toward both ends, (0.7)1-1.3 cm diam. early wet season from January to May.<br />
midway, 7 mm diam. 1 cm below the apex; mostly Discussion. The species is characterized by its<br />
sterile intermediate portion of spadix 2.0 l.0 cm robust, but moderately short stature, dark green,<br />
long, 7-9 mm diam., with a few aborted pistillate semiglossy stems; narrowly ovate to ovate-elliptic<br />
flowers in the lower half and a few sterile male yellowish brown, to yellow-green-drying leaf<br />
flowers in the apical half, often with a totally barren blades; but especially by the partially sheathed petsegment<br />
of up to 1-2.8 cm long; pistils (33)45 to ioles with the sheath margins decurrent or ending<br />
55, depressed-globose, weakly pale yellow-green, abruptly and rounded at apex with a free, unmoderately<br />
glossy, (2)3 to 5 across the width of the sheathed sulcate portion 1-9 cm long at the apex.<br />
spadix, 3.0-3.7 mm diam., 1.5-1.7 mm high; stig- In addition, the species has an unusually large<br />
ma yellow to pale orange, 0.6-1 mm high, 2.0-2.7 spathe for the size of its leaves, frequently exceedmm<br />
diam., sometimes broadly sunken medially, ing 30 cm long.<br />
sometimes with a prominent, protruding dome held Populations of 1). wendlandii on the Atlantic<br />
slightly above the outer ring; staminodia 3 to 4, free slope have petioles completely terete, rather than<br />
to the base, broadened toward the base, 0.8-1.2 sulcate adaxially, })ut this varies even on the same<br />
mm wide at base and sometimes partly fused, usu- individual. In ad(lition, these populations are more<br />
ally slightly thicker near apex, (2.5)3.5-5 mm long, likely to have the ^)etiole sheath even more decidwhite,<br />
slightly flattened, 1.5-3.5 mm wide, about as edly decurrent at the apex. At least the populations<br />
long as the pistils; synandria 4 to 7 visible per spi- of plants in Oaxaccl at middle elevation above Valle<br />
ral, 3.5 l.0 mm diam., widely spaced at base, trun- Nacional have sal) that is only mildly odorous,<br />
cate and smooth at apex, irregularly rounded, pale whereas elsewhere the sap is malodorous, smelling<br />
tan, becoming bowl-shaped and brown except for somewhat like sk ll 1l k or peccary.<br />
white, erect margins, margins sometimes crenate, DieJ%enbachia 1lperldlandii is easily confused with<br />
with thecae 6 to 8 per synandrium, these subglo- D. oerstedii on the eastern slopes of Chiapas and<br />
bose, ca. 1 mm long, held just below the apex of Veracruz, but D. Ilnendlandii is much more robust<br />
the synandrium. INFRUCTESCENCE with spathe than plants of D. oerstediip which are usually less<br />
green at maturity; berries red to bright orange, 6-8 than 1 m tall and have internodes usually less than<br />
mm diam.<br />
2.5 cm in diameter: In contrast, the stems of D.<br />
wendlandii are rarely less than 2.5 cm in diameter<br />
Distribution and habitat. Dieffenbachia wen- and are usually 4-5 cm in diameter. Other differdlandii<br />
occurs principally in seasonally dry habi- ences in D. oerstedii are the sharply sulcate (rather<br />
tats on the Pacific slope of Central America, rang- than terete to obtusely sulcate) petioles that are<br />
ing from central Mexico (Oaxaca and Chiapas) to white (rather than green) at the base, and the<br />
Guatemala (Escuintla, Huehuetenango, San Mar- sheath apex of which at least one margin is rounded<br />
cos, Suchitepequez), E1 Salvador, Honduras (Mor- and prominently free-ending. In contrast, D. wenazan),<br />
Nicaragua (Esteli, Granada, Matagalpa, Nue- dlandii on the Atlantic slope is more than 1.5 m<br />
va Segovia, Zelaya), Costa Rica (Puntarenas tall at maturity, has internodes more than 3 cm in<br />
Province), and Panama (Veraguas) at elevations of diameter, and petiole sheath margins acute to only<br />
75 to 900 m. In Mexico the species occurs on the weakly protruded at apex with the free portion of<br />
Atlantic slope only in the State of Oaxaca in the the petiole at most obtusely sulcate. Another way<br />
Serrania de Juarez at 250-705 m and in Veracruz D. wendlandii differs from D. oerstedii is by its typin<br />
or near the Estacion Biologica de Los Tuxtlas ically larger spathe, over 25 cm long versus less<br />
near the Caribbean coast at 5-165 m elevation. The than 20 cm long for D. oerstedii.<br />
only collection of the species in Panama, from Ba- Previously most material of D. wendlandii from<br />
hia Honda in Veraguas Province, is unusual in hav- Mexico and Guatemala has been mistakenly called<br />
ing blades more ovate and in drying pale green. It D. oerstedii, and indeed herbarium material without<br />
may prove to be a new species.<br />
good field notes is difficult to separate. Several of<br />
Phenology. DiefNfenbachia wendlandii flowers the collections of D. oerstedii made in lowland Veprincipally<br />
in the rainy season, beginning in May racruz (Holstein & Armbruster 20425; Nee 23 773^<br />
and especially in June and July, but continuing un- 29752 and 29993) appear to have the petiole
Volume 91, Number 4<br />
2004<br />
Croat<br />
Revision of Dieffenbachia<br />
sheath somewhat decurrent without a conspicuous America. The material previously determined as D.<br />
free-ending apex. They are described as plants no seguine in Central America has proven to be either<br />
more than 1 m tall. It is possible that these rep- D. oerstedii with blades larger than normal, or D.<br />
resent hybrid plants since both D. wendlandii and wendlandii.<br />
D. oerstedii occur in lowland Veracruz.<br />
Additional speciniens exaniined. COSTA RICA. Ala-<br />
Dieffenbachia wendlandii has been confused juela: Rfo Cacao, near Atenas, L. Goniez 19572 (MO).<br />
with D. standleyi in eastern Nicaragua. However, Puntarenas: rd. to Monteverde, Wilbur et al. 15861<br />
that species occurs only on the Atlantic slope and (DUKE). EL SALVADOR. Wendland 410 (GOET); San<br />
Salvador, Calderon 914 (US), Renson 266 (NY, US). GUAhas<br />
petioles sheathed completely to the apex and a TEMALA. Escuintla: Engler 2389 (GH); Escuintla-Aloproportionately<br />
longer blade, ranging from 1.9 to tenango, mi. 6, Croat 42050 (DUKE, MO); Cucunya at<br />
3.5 times longer than wide, and averaging 2.5 times San Andre Osuna, Seler 2389 (G), Seler 2398 (GH). Huelonger<br />
than wide. In contrast, D. wendlandii has huetenango: Cerro Victoria, Finca San Rafael, Sierra de<br />
los Cuchumatanes, Steyerniark 49637 (F). San Marcos:<br />
blades ranging from 1.3 to 2.4 times longer than<br />
Finca Armenia near La Trinidad above San Rafael, Croat<br />
wide and averages only 2 times longer than wide. 40790 (ENCB, MO); Rio Ixpal, below Rodeo, Standley<br />
Throughout its range in western Mexico and Central 68724 (F); Santa Rosa, Chiquimulilla-El Ahumado, N of<br />
America, D. wendlandii is variable in the blade Los Cerritos, Standley 79561 (F); E of Cuilapa, Standley<br />
shape with the proportionately broader blades oc- 78161 (F). Suchitepequez: Mazatenango, Morales 1047<br />
(F, CR); vic. Tiquisate, Steyerniark 47684 (F, MO). HONcurring<br />
in Mexico and Guatemala, where they av- DURAS. Francisco Morazan: San Antonio de Oriente,<br />
erage 1.8 times longer than wide. The collections above E1 Jicarito, Standley 21077 (F). MEXICO. Chiafrom<br />
E1 Salvador and Nicaragua, on the other hand, pas: Escuintla-Monte Ovando, 2.8 km NW of Turquiz,<br />
have leaf blades averaging 2.3 times longer than Croat 47510 (MO); Escuintla-El Triunfo, ca. 1 mi. N of<br />
Escuintla, Croat 43813 (MO); Tapachula-Nueva Aleman,<br />
wide. The populations in Mexico and Guatemala<br />
mi. 4, Croat 43791 (CHIP, CM, MO); Mapastepec, Sierra<br />
have shorter petioles (averaging 19.8 cm long and de Soconusco, Croat & D. Hannon 63340 (MO); Tapachu-<br />
22.6 cm long, respectively) than those in E1 Sal- la-Union Juarez, at km 13.5, 1.3 mi. N of Trinidad, Croat<br />
vador and Nie aragua (averaging almost 30 e m 47219 (CHIP, MEXU, MO); Acacoyagua, Eji(la Eas Golong).<br />
lan(lrinas, Cerro Mt. ()van(lo Trail, Croflt 78480 (MO);<br />
A(apetagua, K. Hern(in(lez 47.S (MEXU, M(), NY); Es-<br />
The single Costa Rican colle( tion made in Pun- ( uintla, Esperan>a, Mfltllfl(l 167e55 (F, MEXU); Esperanza,<br />
tarenas Provine e, along the dry roa(l ay)l)roaching Mfltll(l(l 16X66) (MEXU). Oaxaca: Tuxtepec, 6 nli. W of<br />
the Montever(le reserve, is noteworthy in })eing so Valle Na(. on Hwy. 17tS, Croflt. .X9749 (AAU, MEXU, MO,<br />
far out of the range of the sl)ecies. I)iei/enb(lchi(l IASA, SKIJX TE
766 Annals of the<br />
Missouri Botanical Garden<br />
ever, this is a distinct species from Antioquia De- Dieffenbachia picta subvar. angustifolia Engl., Bot.<br />
partment, Colombia.<br />
Jahrb. Syst. 26: 569. 1899. TYPE: based on a<br />
Dieifenbachia picta Schott forma lancifolia (Lin- cultivated plant of unknown origin, not seen.<br />
den & Andre) Engl. and Dieffenbachia picta Schott No type listed by Engler.<br />
subvar. Iancifolia (Linden & Andre) Engl. are com- Dieffenbachia seguine var. minor Engl., Bot. Jahrb.<br />
binations of Dieffenbachia lancifolia Linden & An- Syst. 26: 567. 1899. TYPE: No type listed by<br />
dre that also must be excluded from consideration Engler.<br />
in this revision of Central American Dieifenbachia. Dieffenbachia picta var. Iatior Engl., Bot. Jahrb.<br />
Dieffenbachia meleagris Linden & Rodigas, Syst. 26: 569. 1899. TYPE: No type listed by<br />
,olaced in synonymy of D. seguine by Engler (1915); Engler.<br />
however, this is a distinct species from Ecuador, Dieffenbachia picta var. Iatior Engl., Bot. Jahrb. 26.<br />
possibly one synonymous with D. spruceana Schott. 569. 1899. TYPE: Not seen. No type listed by<br />
The recombine(l Dieffenbachia meleagris Linden & Engler.<br />
Ro(ligas subvar. meleagris is also to be excluded. Dieffenbachia picta subvar. memoria Engl., Bot.<br />
Dieffenbachia shuttleworthiana Engl. was syn- Jahrb. Syst. 26: 570. 1899. TYPE: based on<br />
onymized with D. picta by Engler (1915), but it living material at Berlin Botanical Garden<br />
must be excluded along with the combination (also Buitenzorg), not seen. No type listed by<br />
D. picta Schott forma schuttleworthiana (Regel) Engler.<br />
Engl. and D. shllttleworthiana Hort. Bull. This Col- Dieffenbachia /)icta subvar. mirabilis Engl., Bot.<br />
ombian species is not closely related to D. seguine. Jahrb. Syst. 26: 570. 1899. DieJ%enbachia mirabilis<br />
Verseh. ex Engl., in DC., Monogr. Phan.<br />
SPEC1ES INCERTAE SEDIS<br />
2: 448. 12J78. TYPE: based on a cultivated<br />
plant of unknown origin by Verschaffelt, not<br />
The following species names are believed to be seen. No type listed by Engler.<br />
synonyms of Dief/enbachia seguine based on the re- Dieffenbachi(l l)icta var. angustior Engl., Bot. Jahrb.<br />
vision of Dieffenb(l chia by Engler (1915); however, Syst. 26. 569. 1899. TYPE: No type or locality<br />
owing to the (lestruction of many herbarium spec- listed, not seen. No type listed by Engler.<br />
imens during World War II, lectotypification was Dieffenbachia seguine fo. viridis Engl., F1. Bras.<br />
impossible. The specimens were no doubt available 3(2): 174. l 878. Dieffenbachia seguine subvar.<br />
during Engler's time, and it is assumed that he saw viridis Engl., Bot. Jahrb. Syst. 26: 567. 1899.<br />
the material.<br />
Dieffen6(lcXlia seguine var. viridis Engl., Pflanzenr.<br />
IV. 2
Volume 91, Number 4<br />
2004<br />
Croat<br />
Revision of Dieffenbachia<br />
manta Massif, Gran Sabana, Venezuela. Bot. Soc. Venez. publica Mexico. 1:200,000. Secretaria de Recursos<br />
Ci. Nat. 25(106): 29-33.<br />
Hidraulicos, Mexico.<br />
. 1965. Commentary on Mexican Araceae. Gentes French, J. C. 1997. Vegetative anatomy. Pp. 9-24 in S. J.<br />
Herb. 9: 289-382.<br />
Mayo, J. Bogner & P. C. Boyce, The Genera of Araceae.<br />
. 1979. Una sinopsis de las Araceae de Venezuela. Royal Botanic Gardens, Kew.<br />
Revista Fac. Agric. (Maracay) 10: 139-290.<br />
, M. Chung & Y. Hur. 1995. Chloroplast DNA phy-<br />
. 1988. Notes on a Guayana Dieffenbachia (Ara- logeny of Ariflorae Pp. 255-275 in P. J. Rudall, P. J.<br />
ceae). Phytologia 65: 390.<br />
Cribb, D. F. Cutler & C. J. Humphries (editors), Mono-<br />
Croat, T. B. 1978. Flora of Barro Colorado Island (Panama cotyledons: Systematics and Evolution. Royal Botanic<br />
Canal Zone). Stanford Univ. Press, Stanford.<br />
Gardens, Kew.<br />
. 1979. The distribution of Araceae. Pp. 291-308 Gentry, A. H. 1982. Evidence for phytogeographic patin<br />
K. Larsen & L. B. Holm-Nielsen (editors), Tropical terns as evidence for a Choco refuge. Pp. 112-136 in<br />
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G. T. Prance (editor), Biological Diversification in the<br />
. 1981 [1982]. A revision of Syngonium (Araceae). Tropics. Columbia Univ. Press, New York.<br />
Ann. Missouri Bot. Gard. 68: 565-651.<br />
Gleason, H. A. 1929. Studies on the flora of northern<br />
. 1983a. A revision of Anthurium (Araceae) for South America XI. New and noteworthy monocotyledons<br />
Mexico and Central America. Part 1. Mexico and Mid- for British Guiana. Bull. Torrey Bot. Club 56: 8-14.<br />
dle America. Ann. Missouri Bot. Gard. 70: 211-240. Grayum, M. H. 1984. Palynology and Phenology of the<br />
. 1983b. Dieffenbachia. Pp. 234-236 in D. N. Jan- Araceae. Ph.D. Dissertation, University of Massachuzen<br />
(editor), Costa Rican Natural History. Univ. Chicago setts, Amherst.<br />
Press, Chicago.<br />
. 1990. Evolution and phylogeny of Araceae. Ann.<br />
. 1985. The large monocots of Panama. In W. G. Missouri Bot. Gard. 77: 628-677.<br />
D'Arcy & M. D. Correa A. (editors), The Botany and . 1991. Systematic embryology of Araceae. Bot.<br />
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. 1986a. A Revision of Anthurium (Araceae) of ogr. Syst. Bot. Missouri Bot. Gard. 43.<br />
Mexico and Central America. Part 2. Panama. Monogr. Hemsley, W. B. 1885. Biologia Centrali-Americana 3: Part<br />
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Henny, R. J. 1988. Ornamental aroids: (3ulture ancl breedin<br />
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767
768 Annals of the<br />
Missouri Botanical Garden<br />
.<br />
& S. E. Endlicher, Nov. Gen. & Spec. F. Hoffmeister, 6. D. crebripistillata Croat<br />
L.<br />
elpzlg.<br />
7. D. davidsei Croat & Grayum<br />
Raven, P. H. & D. I. Axelrod. 1974. Angiosperm bioge- 8. D. fortunensis Croat<br />
ography and past continental movements. Ann. Missouri 9. D. fosteri Croat<br />
Bot. Gard. 61: 539-673.<br />
10. D. galdamesiae Croat<br />
Ray, T. S. 1981. Growth and Heterophylly in an Herba- 11. D. grayumiana Croat<br />
ceous Vine, Syngonium (Araceae). Ph.D. Thesis, Har- 12. D. hammelii Croat & Grayum<br />
vard University, Cambridge.<br />
13. D. horichii Croat & Grayum<br />
. l 987. Cyelic heterophylly in an herbaceous vine, 14. D. isthmia Croat<br />
Syngonium (Araceae). Amer. J. Bot. 74: 16-26. 15. D. killipii Croat<br />
Schatz, G. 199(). Chapter 7. Some aspects of pollination 16. D. Iongispatha Engl. & K. Krause<br />
biology in Cerltral American forests. Pp. 69-84 in K. 17. D. Iutheri Croat<br />
S. Bawa & M. Hadley (editors), Reproductive Ecology 18. D. nitidipetiolata Croat<br />
of Troy)i(.al 11oreest Plants. Parthenon, Park Ridge, New 19. D. obscurinervia Croat<br />
Jersey.<br />
20. D. oerstedii Schott<br />
Schott, H. NV. 12929. Fur Liebhaber der Botanik. Wiener 21. D. panamensis Croat<br />
%. Kunst 1829(3): 803.<br />
22. D. pittieri Engl.<br />
. 186(). Ilodromus Systematis Aroidearum. Typis 23. D. seguine (Jacq.) Schott<br />
Congregationis Mechitharisticae, Vienna.<br />
24. D. standleyi Croat<br />
Standley, P. C. 19.-s1. Araceae. Arum Family. In Flora of 25. D. tonduzii Croat & Grayum<br />
the Lanceti]la Valley, Honduras. Publ. Field Mus. Nat. 26. D. wendlandii Schott<br />
Hist., 130t. Seel . 1(): 118-124.<br />
. 1937. Flora of Costa Rica, Part 1. Publ. Field<br />
Mus. Nat. Hist., Bot. Ser. 18: 131-146.<br />
1944. A l ae eae. In R. E. Woodson, Flora of Pan-<br />
APPENDIX 2<br />
tNDEX TO EXstcCATAE. TYI'F, sICtEs tN BoLDFACE<br />
ama. Ann. Missouri Bot. Gard. 31: 1-60.<br />
Acevedo-Rodriguez 47()5 (2.-3); Acosta Solis, M. 10896<br />
& J. Ste.ye.rmark. 1958. Araceae. Pp. 304-363 in (15); Aguilar, R. 256 (20), 21'35 (4), 2380 (20), 2412 (20),<br />
Flora of Gu at e llsal a. Fieldiana, Bot. 304.<br />
5204 (20); Aguilar et al 43()2 (20); Akers, M. 78 (18),<br />
Takhtajan, A. lt3()9. Araceae. Pp. 8, 108, 199, 239, 247, 78A (11); Allen 5669 (4), .5()()9A (4), 5972 (1); Allen 8z<br />
251 in Flowelillg lvlants, Origin and Dispersal. [Trans- Alston 1839 (6); Alvarez, A. & P. Herrera 699 (15); A1lated<br />
flom lAtlssiarl text by C. Jeffrey, Kew.] Smithsonian verson et al. 283 (19), 376) (15); Anaya 1 (20); Andre 1202<br />
Institution, Wasllington, D.C.<br />
(23), 457 (15); Antonio 2t3()4 (25), 3039 (6), 3820 (6),<br />
Tam, S.-M., P. (:. 13oyce, T. M. Upson, D. Barabie, A. Brun- 4488 (18), 4546 (14), 46).sEJ (1
(15) 1 266() ( l 9) 1 34() 3 (6), l 32J49 ( 1 ()) l l . 5 (6) 1g1t3()()<br />
Volume 91, Number 4<br />
2004<br />
Croat<br />
Revision of Dieffenbachia<br />
Bunting & Trujillo 2236 (23); Bunting et al. 1937A (23),<br />
1949A (23), 1997 (23), 2072 (23), 2074 (23), 2073 (23),<br />
(10),49155 (6),49243 (6),49310 (25),49761 (18),49768<br />
(18), 49791 (19), 49805 (15), 49932 (25), 49971 (8),<br />
4108 (23); Burch et al. 1123 (15); Burger & Antonio 50049 (25), 50480 (15), 50655 (15), 50684 (15), 50725<br />
10905 (18), 11198 (18), 11224 (12), 11249 (4); Burger & (15), 52300 (25), 5378 (14), 53921 (23), 53956 (23),<br />
Baker 9968 (11), 10121 (3), 10137 (13); Burger & Gentry 54380 (23), 54649 (23), 55549 (15), 55629 (15), 55666<br />
Jr. 8898 (3); Burger & I iesner 7111 (20), 7196 (4), 7254 (15), 56070 (18), 56112 (25), 56205 (25), 56282 (25),<br />
(3); Burger & Matta 4181 (11); Burger & Pohl 7825 (20); 56625 (25) ? 57000 (25), 57427 (25), 57462 (18), 59152<br />
Burger & Stolze 5024 (18), 5461 (4), 5489 (3), 5753 (18), (2), 60567 (23), 60613 (23), 60867 (23), 62831 (25),<br />
5754 (2); Burger et al. 1323 (20), 10323 (18), 10669 (13), 66533 (25),66732 (25),66866 (8),66953 (2),66993 (25),<br />
10671 (3), 10699 (18), 10734 (11), 11695 (20), 11926 67115 (6),67197 (15),67329 (19),67379A (18),67399A<br />
(20); Busey 743 (1).<br />
(16), 67480 (15), 67526 (21), 67533 (20), 67576 (6),<br />
Cadet 6030 (23); Calderoll 914 (26); Callejas & Jan- 67594 (4), 67692 (3), 67700 (1), 67837 (8), 68012 (8),<br />
goux 2692 (25); Callejas et al. 4873 (19), 5661 (18), 9704 68069 (20), 68()97 (25), 68195 (18), 68196 (25), 68336<br />
(25); Calzada 338 (20); Camp E-3599 (15), 3653 (15); (25), 68358 (2), 68359 (11), 68379 (18), 68449 (20),<br />
Carballo et al. 47 (20); Carleton 508 (20); Carlson 153 68494 (23),68547A (23),68582 (23),68679 (15),68699<br />
(20); Carrasquilla 2005 (18); Carrasquilla & Mendoza (6), 68746 (6), 68820 (21), 68854 (18), 68961 (15),<br />
1239 (18); Carrasquilla & Rincon 304 (15); Carvajal 273 68971 (16), 69070 (17), 69343 (15), 70099 (25), 70868<br />
(20); Catharino et al. 1909 (23); Cedillo, T. 3645 (20); (25), 70900 (25), 71017 (25), 71119 (15), 71461 (25),<br />
Ceron & J. Corozo 33858 (18), 33947 (18), 34097 (18); 72573 (15), 73792 (15), 73826 (15), 74137 (23), 74759<br />
Ceron et al. 29159 (15); Chacon 364 (20), 507 (11), 553 (15), 74760 (6), 74789 (15), 74792 (15), 74853 (20),<br />
(12), 1406 (13); Chacon et al. 1488 (25); Chavarria & 74861 (6), 74930 (25), 74945 (11), 74952 (25), 74953<br />
Umana 157 (13); Chavarrfa et al. 257 (4); Chazaro 416 (11), 74958 (18), 75007 (17), 75099 (20), 75100 (7),<br />
(20); Chinchilla 137 (20); Churchill & Churchill 6105 75149 (19), 75154 (15), 75172 (6), 75195 (16), 77281<br />
(18), 6158 (8), 6159 (8), 6252 (25); Churchill & de Nevers (4),77283 (20),77298 (23),78287 (23),78318 (4),78323<br />
4333 (15); Churchill et al. 3993 (6), 4032 (15), 4125 (15); (23), 78345 (23), 78480 (26), 78678 (20), 78687 (20),<br />
Clarke 60 (20); Clewell & Tyson 3306 (15); Clezio 221 78695 (20), 78711 (26), 78720 (26), 78731 (12), 78732<br />
(15); Cogollo et al. 3462 (25); Colehester 21()8 (23); Con- (4),78733 (11),78758 (12),78771 (2),78784 (20),78787<br />
rad sT Conrad 2882 (20); Conrad et al. 2863 (20); Cornejo (25), 78788 (18), 788
770 Annals of the<br />
Missouri Botanical Garden<br />
5727 (18), 7407 (18), 7409 (19), 8267 (15); Delinks 452<br />
(15); Dillon et al. 1837 (20); Dodge 10020 (4), 10198 (4);<br />
Dodge & Goerger 9489 (25), 10157 (20); Dodson 6188<br />
(15); Dodson & Dodson 11130 (15); Dodson & Tan 5338<br />
(15); Dodson et al. 8415 (15), 10594 (15), 14638 (15);<br />
Hahn 142 (15), 945 (23); Hammel 122 (2)! TT8 (21), 3140<br />
(6), 3586 (20), 3781 (6), 4049 (18), 4101 (20), 4298 (14),<br />
4484 (19), 5378 (14), 5607 (7), 6264 (20), 7212 (6), 8123<br />
(18), 8167 (11), 8212 (12), 8270 (20), 8273 (12), 8415<br />
(20), 8606 (20), 8617 (11), 8748 (12), 8784 (4), 8846 (2),<br />
Donnell Smith 7813 (20); Drake 7 (23); Dressler 4688 8873 (11), 8874 (25), 9688 (4), 9772 (4), 9922 (20),<br />
(15), 4716 (14), 5316 (10); Dryer 1681 (11); Duke 5014<br />
(14), 5099 (15), 5169 (15), 5260 (15), 5437 (15), 13082<br />
(15), 13601 (15), 14346 (15), 15591 (15); Duke & Kirk-<br />
10081 (4), 10082 (18), 10449 (20), 12320 (12), 13636<br />
(5), 13685 (7), 20231 (20); Hammel & D'Arcy 5018 (15);<br />
Hammel & Grayum 14169 (1); Hammel & Kernan 16661<br />
bride 14019 (15); Duss, P. 3790 (23), 21496 (23); Dwyer<br />
2077 (15), 4565 (15), 9920 (20), 11184 (20); Dwyer &<br />
Dieckman 13008 (20); Dwyer & Gentry 9479 (6).<br />
Eggers 14183 (15), 15095 (15); Ekman 1983 (23); Engler<br />
226 (23), 227 (23), 2389 (26), 2793 (23); Espina et<br />
(4); Hammel & Trainer 13962 (20), 14211 (20), 14767<br />
(14), 14786 (19), 15836 (25); Hammel et al. 4882 (18),<br />
6871 (20), 14472 (15), 16262 (14), 16397 (7), 17548 (25),<br />
20114 (20); Harling 313 (15); Harling & Andersson<br />
16727 (15), 18898 (15), 19371 (15), 24778 (15); Harmon<br />
al. 2902 (15); Espinosa & Guerra 3762 (15), 3939 (15);<br />
Espinosa & E. Martinez 3308 (6); Espinosa et al. 3138<br />
& Dwyer 4035 (20); Harmon & Fuentes 4740 (20), 6419<br />
(20); Harris 8361 (23); Harris & Neal s.n. (23); Hartman<br />
(l5), 3611 (15), 4478 (15), 4723 (6), 10035 (20).<br />
Faden et al. 76/82 (20); Fallen & Ray 860 (15); Fishlo(<br />
k 326 (23); Folsom 1265 (6), 1444 (15), 3211 (6), 4054<br />
(20), 6218 (6), 6247 (15), 8712 (20), 9200 (18), 9329 (12),<br />
9724 (11), 10116 (25); Folsom & Collins 436 (15), 6486<br />
(21); Folsom & Mauseth 7844 (15); Folsom et al. 2111<br />
(20), 6848 (15), 6852 (15), 8264 (21); Fonnegra 1344<br />
(25); Fonnegra et al. 2899 (18), 2907 (18); Forero 719<br />
(25); Forero et al. 1723 (14), 4571 (18), 4659 (18), 6272<br />
(15), 6489 (15), 9007 (15), 9047 (15); Forther 10213 (20);<br />
Foster, R. B. 865 (14); Foster et al. 14649 (9); Fuentes<br />
R. 12488 (15); Henny 5 (2), 7 (23); Herbst & S. Ishikawa<br />
5459 (23); Heredia, M. 60 (23); Helnandez 473 (26), 542<br />
(20), 605 (20), 1318 (26), 2586 (26); Hernandez & Vazquez<br />
551A (20); Herrera 1636 (20)! 4116 (18); Herrera,<br />
G. et al. 2928 (20); Herrera, H. 245 (19); Heyde & Lux<br />
4654 (20); Higgins, J. 119 (23); Hill, S. 24812 (23);<br />
Hitchcock s.n. (23); Hodge 2929 (23); Hodge & Hodge<br />
3174 (23); Holm-Nielsen et al. 2769 (15), 25355 (18);<br />
Holst 62370 (23); Holstein & Allbruster 20425 (20);<br />
Hoover 1324 (15); Hoover et al. :3161 (25), 3968 (25);<br />
Horich s.n. (11), s.n. (13); Howar(l 11564 (23), 11744<br />
367 (20); Fuertes 564 (23); Funk et al. 10626 (25), 10718<br />
(25).<br />
Galdames et al. 1138 (18), 1330 (7), 1570 (7), 1626<br />
(23); Howard & Nevling 16978 (2:3); Huft & Jacobs 1997<br />
(14).<br />
Ibarra 167 (20), 455 (20), 645 (2()); Ibanez et al. 1829<br />
(14), 2252 (14), 2286 (14), 2486 (14); Galeano, G. 4600<br />
(25); Galeano, G. et al. 4825 (19); Gamboa et al. 71 (15),<br />
91 (15); Garibaldi 68 (14); Garnier 772 (26); Gentry 3035<br />
(26); Ibarra & Cedillo 1804 (2()); lltis et al. 30338 (20);<br />
INBio 186 (20); Ingram 1124 (15)! l 146 (17), 1169 (23),<br />
76452 (25).<br />
(25), 26705 (25); Gentry & Dwyer 3643 (15); Gentry &<br />
Forero 7217 (18), 7342 (18); Gentry & Juncosa 41037<br />
Jacobs 2159 (20); Jimenez 10:3 (18). VI (18); Johnston,<br />
I. 1165 (14); Johnston, J. R. 305 (23). Judd et al. s.n.<br />
(18); Gentry & Lajones 73108 (15); Gentry & Tyson 1653<br />
(14); Gentry et al. 3406 (15), 24700 (25), 26709 (15),<br />
28574 (14), 72496 (15), 72955 (25), 75903 (25); Gomez<br />
19038 (20), 19531 (4), 19532 (20), 19572 (26), 20562A<br />
(20), 20565 (20), 22016 (20), 22951 (13); G6mez & Herrera<br />
23477 (25); Gomez et al. 20405 (25), 21108 (20);<br />
G6mez-Laurito 7792 (13), 7856 (4); G6mez-Pompa 1505<br />
(20); GonSalves et al. 224 (23); Gonzalez 1473 (20), 671I<br />
(23); Juncosa 619 (25), 797 (15). 1795 (18), 1898 (18),<br />
1912 (18); Jones, A. & Tejada 275 (15).<br />
Kennedy 455 (15), 1193 (14)! 1.594 (15), 2661 (15),<br />
3253 (25); Kennedy & Foster 395 (15); Kennedy & Solomon<br />
4629 (20); Kenoyer 188 (14); Kernan 381 (20), 748<br />
(4); Kernan & Phillips 831 (4); KeBw 70-76-494 (20); Killip<br />
12154 (15), 35113 (18), 39979 (l4); Knapp 1042 (19),<br />
2165 (4), 2275 (15), 5758 (6); Kllap^) & Mallet 3089 (15);<br />
(20), 3341 (20), 5597 (20); Gordon 55C (18), 339 (25); Knapp et al. 1717 (6); Koshear 59 (4); Kress T7-830 (15),<br />
Grant & Rundell 92-01928 (4); Grayum 2225 (18), 2288<br />
(11), 2771 (20), 2772 (12), 2780 (25), 2840 (4), 4756 (13),<br />
T7-831 (15), 84-630 (25), 84-1622 (20), 84-1632 (11);<br />
Kufer, J. 394 (20); Kursar & Coley 4 (15); Kvist & Asanza<br />
4765 (20), 6194 (20), 6887 (11), 6899 (2), 6918 (20), 40756 (18); Kvist et al. 48348 (18).<br />
6925 (20), 6936 (2), 7620 (12), 7698 (2), 8638 (13), Lasser 16678 (15); Lavastre 1845 (93); Lazor & Tyson<br />
9251 (20), 9277 (20), 9773 (11), 9777 (4), 9804 (25), 3492 (15); Lazor et al. 2578 (18); l eClezio 135a (16); Le<br />
9830 (11), 9844 (18), 10588 (4), 10858 (25); Grayum & Goff A. 95 (23); Lehmann s.n. (15), 5311 (15), 8876 (25);<br />
Evans 10156 (4); Grayum & Fleming 8119 (4), Grayum Leija & Garza 3341 (20), 5597 (20); Leimbeck, R. 306<br />
& Hammel 5785 (18); Grayum & G. Herrera 7829 (20), (15); Lent 37 (18), 161 (1), 639 (25) 694 (25), 2789 (20),<br />
9139 (1), 9236 (3); Grayum & Jacobs 3524 (18), Grayum 4042 (25); Lent et al. 3374 (18), Leon 720 (25), 26573<br />
& Murakami 9939 (25); Grayum & Schatz 3174 (25), (25); Lewis et al. 1753 (6), 2195 (14), 3251 (14); Liesner<br />
3206 (11), 3218 (18), 3220 (2), 5279 (25); Grayum & 114 (1), 1736 (3), 2871 (4), 14102 (20), 14394 (25); Lies-<br />
Sleeper 6100 (20); Grayum & Warner 5710 (20); Grayum ner & A. Gonzalez 10126 (23); Liesner & Judziewicz<br />
et al. 3982 (4), 3983 (4), 4014 (3), 4440 (7), 4447 (4), 14797 (25); Liesner & Mejia 26236 (20); Liesner et al.<br />
4483 (7), 4961 (20), 5467 (13), 5719 (20), 5723 (13), 7681 (23), 15035 (20), 15122 (20), 15144 (18), 15330<br />
5862 (20), 7547 (3), 7549 (1), 7567 (4), 7657 (15), 8038 (25), 15365 (25); Liogier 13307 (23); Liogier & Liogier<br />
(11), 8336 (13), 8345 (20), 9250 (4), 9469 (25), 9744 (12), 20185 (23); Lister & Colchester 272 (23); Lloyd 237 (23);<br />
9962 (4), 9973 (23), 10578 (20), 11116 (11), 11139 (4), Loiselle 106 (25); (20); L0jtnant & Molau 15839 (15);<br />
11163 (11), 11169 (12), 11174 (13); Grove 01 (20); Guer- Lopez Garcia & Martin 122 (26); Lotto s.n. (23); Luteyn<br />
ra & Liesner 2871 (4); Guillermo, J. & D. Cardenas L. 1010 (6), 1203 (15), 3175 (15), 3180 (15), 3188 (6), 3263<br />
863 (16); Gutierrez, G. & Barkley 17115 (25).<br />
(20), 3342 (20), 3385 (18), 4043 (14); Luteyn & Croat<br />
Haber & Atwood 9163 (20); Haber & Bello 7191 (20);<br />
Haber & Hammel 1799 (20); Haber & Zuchowski 9251<br />
906 (14); Luteyn & Kennedy 1612 (6), 1837 (6); Luteyn<br />
& Wilbur 4569 (20); Luther s.n. (23).<br />
(20), 11175 (25); Haber et al. 4979 (20), 10824 (25); Maas et al. 7834 (1); MacDougal 1027 (18), 1090 (20),
Volume 91, Number 4<br />
2004<br />
Croat<br />
Revision of Dieffenbachia<br />
3193 (20), 3299 (20), 3303 (24); Madison 589 (20), 627<br />
(20), 705 (24), 712 (20); Madison et al. 5008 (15); Machilla<br />
352 (20); Sargent 340 (23), 643 (23); Schatz 1079<br />
(15); Schatz & Grayum 700 (20), 701 (20), 706 (25);<br />
guire et al. 36461 (23); Marten 789 (4), 831 (20), 848 (3);<br />
Martinez 3016 (20); Martinez et al. 22713 (20), 23175<br />
Schipp 386 (20); Schmalzel 1212 (15); Schmalzel & A1verson<br />
1199 (15); Schubert & Rogerson 619 (20); Schultes<br />
(20), 23474 (20), 23693 (20); Martinez, E. 2287 (26),<br />
13445 (20), 13630 (20), 16131 (20); E. Martinez S. &<br />
& Cabrera 17890 (23); Schwerdtfeger 21422 (25); Seler<br />
2389 (26), 2398 (26); Shank & Molina 4288 (25); Shat-<br />
Aguilar 12435 (20); Matuda 16369 (26), 16765 (26); Max- tuck 397 (14); Shepherd 438 (19); Simmonds s.n. (23);<br />
on et al. 6812 (14), 6820 (14); Mayo & Madison 301 (20); Sinaca 830 (20); Sintenis, P. 2793 (23); Skutch 5328 (1);<br />
McAlpin 85-33 (4); McDade s.n. (16); McDonagh et al.<br />
433 (15), 439 (15); McDowell 148 (20), 769 (11), 1012<br />
Slane 634 (23); Smith 2239 (20); Smith, C. E., Jr. & H.<br />
M. Smith 3389 (6); Smith, D. A. 134 (20); Smith, D. et<br />
(20); McPherson 7371 (25), 9176 (15), 9829 (18), 9865 al. 1059 (25); Smith, H. H. & G. W. Smith 1411 (23)<br />
(25), 10725 (7), 10958 (14), 11129 (25), 11381 (18), Soejarto & Renteria 3556 (19); Solomon 5761 (23); Sparre<br />
11401 (18), 11591 (14), 11816 (2), 15037 (14); McPher- 14122 (15), 14556 (15), 15182 (15), 15499 (15), 18326<br />
son & J. Aranda 10095 (2); McPherson & Merello 8143 (18), 19397 (15), 19488 (15); Sparrow & Brewster 108<br />
(19), 8235 (18); Meier et al. 5164 (23); Mejia & Ramirez (20); Spellman et al. 164 (20); Sperry 517 (20), 525 (20),<br />
9929 (23); Mejia & Zanoni 6614 (23); Mena 190 (20); 567 (20), 570 (20); Standley TT00 (20), 7935 (20), 18786<br />
Mendieta 1-10 (15), 1-101 (15), 1-121 (15); Miller & (24), 20085 (20), 21077 (26), 21414 (20), 25700 (24),<br />
Schmidt 5551 (23); Miller & Taylor 5937 (23); Miller et 26156 (16), 26305 (20), 27224 (15), 27413 (15), 28238<br />
al. 753 (15); Miranda, F. 7546 (20); Miyashiro s.n. (23); (16), 28732 (16), 29867 (14), 31266 (14), 32242 (20),<br />
Montenegro, D. & Chung 1462 (20); Montes s.n. (23); 32794 (20), 36314 (25), 36739 (4), 36840 (2), 38942 (20),<br />
Moore, J. W. 451 (23); Moore Jr. & Bunting 8928 (20), 40223 (20), 40960 (14), 41107 (14), 44754 (20), 52702<br />
8933 (20); Mora 51 (25), 70 (18); Moraga 173 (20); Mo- (20), 52924 (20), 53146 (24), 53990 (20), 55444 (20),<br />
rales 1047 (26), 2035 (13); Morales et al. 5413 (20); Mo- 58291 (20), 60715 (20), 63529 (20), 63620 (20), 65041<br />
reno 15290 (26), 16421 (26), 16464 (26), 17142 (24); (20), 66844 (20), 68724 (26), 72447 (20), 75669 (20),<br />
Moreno & Henrich 8427 (26); Moreno & Robleto 20526 78161(26), 78523 (20), 79561 (26), 87180 (20), 88988<br />
(24); Moreno & Sandino 12855 (25), 12891 (25), 12917 (20); Standley & Chac6n 6701 (24); Standley & Valerio<br />
(25), 12955 (25), 12976 (18), 15160 (18); Mori & Bolten 45008 (20), 45206 (25), 45262 (25), 45592 (20), 46000<br />
7698 (15); Mori & Gracie 18717 (23); Mori & Kallunki (20), 48960 (4), 48997 (25); Stein & Hamilton 990 (6);<br />
3591 (15), 6026 (6); Mori et al. 3817 (25), 4184 (7), 6814<br />
(25); Murphy & Jacobs 1289 (20); Moreno, P. & J. Sandino<br />
15160 (18).<br />
Nash, G. 611 (23); Nee 9023 (16), 22595 (20), 23733<br />
(20), 29752 (2()), 29993 (20)! 41364 (23), 99121 (20); Nee<br />
et al. 24759 2())! 26103 (20); Neill 1571 (24), 1657 (26),<br />
3629 (24); Neill & Vin(elli 3484 (12); Neill et a1. 11683<br />
(15); Nelson & Andino 16247 (24); Nelson & Cruz 9215<br />
Stergios et al. 7940 (23); Stern et al. 433 (15); Stevens<br />
6027 (26), 6420 (25), 7457 (24), 8044 (24), 11786 (24),<br />
12311 (24), 13564 (25), 13761 (20). 23642 (11)! 24257<br />
(12); Steverls et al. 17591 (26)! 20998 (24), 24699 (12);<br />
Stevensone P. 379 (16); Steyerlnark 31763 (20)! 34555<br />
(20). 37153 (20), 37456 (20), 38647 (20), 38775 (20),<br />
41699 (2()), 44754 (20), 4541() (20)! 45869 (20), 47684<br />
(26), 47908 (20), 49321 (20), 49637 (26), 52070 (20),<br />
(20), 9291 (24); Nevling & G6mez-Pampa 1505 (20); Ni(- 60796 (23), 88864 (23), 91896 (23), 94331 (23); Steyerolson<br />
2()6() (23), 3393 (4); Nilsson & Manfredi 505 (20); mark & Bunting 97728 (23), 105293 (23); Steyermark &<br />
Nilsson et a1. 377 (25)! 632 (25); Noriega & H. Vasquez Davidse 116647 (23); Fiteyermark & Liesner 118891 (23),<br />
G. 1353a (20).<br />
121834 (23); Steyermark & Rogers 119364 (23); Steyer-<br />
Ocampo 3411 (20); Oersted s.n. (20); Opler 246 (20); mark et al. 100213 (23), 100239 (23), 100318 (23),<br />
Oppenheimer 67-1-3-1244 (16).<br />
102036 (23), 122412 (23), 124629 (23), 124955 (23),<br />
Palacios 11452 (25), 13626 (25); Palacios & Tirado 127204 (23); Stimson 5277 (16); Stone 3317 (20); Stricker<br />
1287 (25), 11327 (15); Paredes et al. 940 (7); Peneis, D. 342 (20); Sturrock 352 (23); Sullivan 59 (15), 537 (6),<br />
633 (25); Perez 1 (25); Perez, J. & M. Sosa 671 (23);<br />
Peterson 6405 (16); Peterson & Annable 6768 (15); Pfeifer<br />
2124 (24), 2163 (20); Philcox 8231 (23); Picado &<br />
745 (15); Sytsma 1658 (15), 1695 (18); Sytsma e.t al. 2414<br />
(15), 4398 (6); Sytsma & Andersson 4573 (6); Sytsma &<br />
Antonio 3006 (25).<br />
Gamboa 134 (20), 138 (1); Pipoly 4479 (24); Pitman &<br />
Bass 995 (25); Pittier 2600 (15), 2715 (16), 2836 (20),<br />
Taylor 216 (20); Taylor, N. 48 (23); Taylor & Taylor<br />
11660 (18); Tellez et al. 4466 (20), 4875 (25); Thompson<br />
3754 (14), 3766 (22), 3838 (16), 3847 (19), 6845 128 (15), 160 (15), 441 (26), 3238 (23), 4593 (15), 4816<br />
(15); Pittier & Durand s.n. (1); Plowman 14121 (15); Po- (15), 4874 (6), 4937 (2), 4951 (8), 5028 (18); Thorne &<br />
lanco 1485 (15), 1591 (18); Polanco et al. 1905 (15); Por- Lathrop 40559 (20); Tipaz et al. 2280 (18); Tonduz 503<br />
ter et al. 4282 (15); Prance et al. 30247 (23); Prevost 3258<br />
(23), 3382 (23), 3580 (23); Proctor 20987 (23), 32251<br />
(25), 9961 (1), 12874 (25); Trujillo et al. 17397 (23);<br />
Tyson 1438 (16), 1443 (15), 4632 (14), 6700 (16); Tyson<br />
(20), 38601 (23).<br />
& Blum 3954 (15), 3997 (15), 3998 (14), 4099 (15); Tyson<br />
Quesada 51 (4), 175(20); Quishpe & Davila 82 (15). et al. 4486 (15), 4631 (14), 4701 (16), 4834 (14).<br />
Ramamoorthy et al. .3763 (20); Raven 21532 (4); Read<br />
& Watson 84-75 (21); Renson 266 (26); Renteria 10680<br />
Utley & Utley 1100 (3).<br />
Valerio s.n. (20), 246 (20), 462 (1), 1355 (20), 1356<br />
(15); Rios et al. 109 (20); Rivera 623 (20), 758 (20), 1560 (20); Valverde 741 (13); Vanderveen 590 (20); Vasquez,<br />
(20), 1718 (25); Robles, R. 815 (20), 1142 (25), 1158 M. et al. V-907 (20); Villacorta et al. 314 (20), 408 (20);<br />
(25), 1234 (2), 2090 (4); Robles et al. 2050 (25); Rodri- von Wedel 1438 (2), 2892 (18).<br />
guez, A. & Estrada 142 (20); Rodriguez, G. 32 (20); Rodriguez,<br />
J. 262 (15); Rojas et al. 607 (23); Roldan et al.<br />
Wagner, R. 558 (23); Webster et al. 12581 (24), 12624<br />
(20), 12625 (20); Wendland s.n. (26), 410 (26); White-<br />
1199 (18); Romero-Castaneda 6436 (16); Rose et al. 4375 foord 1176 (20), 3284 (20); Whitefoord & Eddy 136 (15),<br />
(23); Rueda et al. 4070 (4); Rueda & Coronado 6557 (24). 372 (25); Whitehill 8 (23); Wilbur 28249 (20), 37243 (20)<br />
Salick 8092 (12), 8153 (25); Sanchez 539 (2); Sanders 37337 (20); Wilbur & Jacobs 34819 (20), 34962 (20),<br />
et al. 19322 (20); Sandino 1248 (26); Sandoval & Chin- Wilbur et al. 15664 (6), 15861 (26); Williams, L. et al.<br />
771
772 Annals of the<br />
Missouri Botanical Garden<br />
28479 (13); Witherspoon & Witherspoon 8401 (15), Won<br />
s.n. (23); Woodbury et al. s.n. (23); Woodson Jr. & Schery<br />
861 (1); Woodson Jr. et al. 1909 (25).<br />
Yanez et al. 1387 (25); Yuncker 4961 (24); Yuncker et<br />
al. 8395 (20), 8551 (24)? 8826 (20).<br />
Zak et al. 5383 (15), 5414 (15), 5726 (15); Zambrano<br />
& Delgado 1336 (14); Zanoni & Pimentel 23420 (23)<br />
23456 (23); Zanoni et al. 23113 (23), 25159 (23), 27170<br />
(23); Zapata et al. 289 (19); Zent, E. & S. 2189 (23)<br />
Zuniga 216 (20).