New Combinations Within the Briza Complex (Poaceae, Pooideae, Poeae) Author(s): Liliana EssiHilda Maria Longhi Wagner and Tatiana Teixeira de Souza Chies Source: Novon: A Journal for Botanical Nomenclature, 21(3):326-330. Published By: Missouri Botanical Garden DOI: http://dx.doi.org/10.3417/2010026 URL: http://www.bioone.org/doi/full/10.3417/2010026 BioOne (www.bioone.org) is a nonprofit, online aggregation of core research in the biological, ecological, and environmental sciences. BioOne provides a sustainable online platform for over 170 journals and books published by nonprofit societies, associations, museums, institutions, and presses. Your use of this PDF, the BioOne Web site, and all posted and associated content indicates your acceptance of BioOne’s Terms of Use, available at www.bioone.org/ page/terms_of_use. Usage of BioOne content is strictly limited to personal, educational, and noncommercial use. Commercial inquiries or rights and permissions requests should be directed to the individual publisher as copyright holder. BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders in the common goal of maximizing access to critical research. New Combinations Within the Briza Complex (Poaceae, Pooideae, Poeae) Liliana Essi Universidade Federal de Santa Maria, Centro de Educação Superior Norte do Rio Grande do Sul, Departamento de Zootecnia e Ciências Biológicas, Av. Independência 3751, Bairro Vista Alegre, 98300-000 Palmeira das Missões, Rio Grande do Sul, Brazil. lili.essi@gmail.com Hilda Maria Longhi Wagner and Tatiana Teixeira de Souza Chies Universidade Federal do Rio Grande do Sul, Instituto de Biociências, Departamento de Botânica, Av. Bento Gonçalves 9500, Bairro Agronomia, 91501–970 Porto Alegre, Rio Grande do Sul, Brazil. hmlw@plugin.com.br, tatiana.chies@ufrgs.br ABSTRACT. Briza L. (Poaceae, Pooideae, Poeae) is a genus with a controversial circumscription, being either considered sensu lato, including Eurasian and South American species (e.g., Longhi-Wagner, 1987), or sensu stricto, including only four Eurasian species and being considered closely related to the South American species, forming the Briza complex (Matthei, 1975). According to recent phylogenetic analysis, Briza should be accepted sensu stricto, with four Eurasian species, as proposed by Matthei (1975) and other authors. The American species, which were previously published under Briza s.l. or under the genera Calotheca Desv., Chascolytrum Desv., Erianthecium Parodi, Gymnachne Parodi, Lombardochloa Roseng. & B. R. Arrill., Microbriza Parodi ex Nicora & Rúgolo, Poidium Nees, and Rhombolytrum Link, should be included within Chascolytrum, the oldest generic name published for the American species of the complex. As a result, the following 13 new combinations are proposed in Chascolytrum: C. ambiguum (Hack.) Essi, LonghiWagner & Souza-Chies, C. bidentatum (Roseng., B. R. Arrill. & Izag.) Essi, Longhi-Wagner & SouzaChies, C. brachychaetum (Ekman) Essi, LonghiWagner & Souza-Chies, C. brasiliense (Nees ex Steud.) Essi, Longhi-Wagner & Souza-Chies, C. brizoides (Lam.) Essi, Longhi-Wagner & SouzaChies, C. bulbosum (Parodi) Essi, Longhi-Wagner & Souza-Chies, C. calotheca (Trin.) Essi, LonghiWagner & Souza-Chies, C. itatiaiae (Ekman) Essi, Longhi-Wagner & Souza-Chies, C. koelerioides (Trin.) Essi, Longhi-Wagner & Souza-Chies, C. monandrum (Hack.) Essi, Longhi-Wagner & SouzaChies, C. poomorphum (J. Presl) Essi, LonghiWagner & Souza-Chies, C. rhomboideum (Link) Essi, Longhi-Wagner & Souza-Chies, and C. uniolae (Nees) Essi, Longhi-Wagner & Souza-Chies. The names Poa koelerioides Trin., Poa tumidula Steud., NOVON 21: 326–330. PUBLISHED ON Poidium brasiliense Nees ex Steud., and Rhombolytrum berteroanum E. Desv. are lectotypified. Key words: Briza complex, Chascolytrum, Eurasia, Gramineae, South America. The genus Briza L. (Linnaeus, 1753; Poaceae, Pooideae, Poeae) was published with three European species, B. maxima L., B. minor L., and B. media L. Another Old World species, B. humilis M. Bieb., was added later, in 1808. Several new South American species were afterward described under Briza or under the genera Chascolytrum Desv., Calotheca Desv., Poidium Nees, Lombardochloa Roseng. & B. R. Arrill., and Microbriza Parodi ex Nicora & Rúgolo (Nicora & Rúgolo de Agrasar, 1981). Further taxonomic treatments (e.g., Ekman, 1913; Parodi, 1920; Rosengurtt et al., 1968, 1970; Longhi-Wagner, 1987) accepted a broad circumscription for Briza, some including sections or subgenera for Briza to accommodate such great morphological variability. Matthei (1975) published a revision of Briza and related genera, jointly referred as the Briza complex, using morphological, anatomical, and cytological data. This author accepted Briza s. str., restricted to the Eurasian species, and distributed the American species among the genera Calotheca, Chascolytrum, and Poidium, a move that was followed by other authors (Smith et al., 1981; Soreng et al., 2003). Nicora and Rúgolo de Agrasar (1981) described the genus Microbriza for two species previously accepted under Briza or Poidium: M. brachychaete (Ekman) Parodi ex Nicora & Rúgolo and M. poomorpha (J. Presl) Parodi ex Nicora & Rúgolo [as ‘‘poaemorpha’’]. Additionally, Nicora and Rúgolo de Agrasar (1981) accepted Briza with a different circumscription from that proposed by Matthei (1975), including not only the Eurasian species, as in Matthei (1975), but also the American species previously described under the genus Chascolytrum 9 SEPTEMBER 2011. doi: 10.3417/2010026 Volume 21, Number 3 2011 Essi et al. 327 New Combinations in the Briza Complex and a portion of the species described in Poidium. Nicora and Rúgolo de Agrasar (1981) accepted the genera Calotheca, Poidium, and Rhombolytrum Link for the remaining species of this complex. Bayón (1998) published a cladistic analysis of the Briza complex based on 32 morphological characters, resulting in the acceptance of the genera proposed by Nicora and Rúgolo de Agrasar (1981), with similar circumscription. Recently, Essi et al. (2008) performed a phylogenetic analysis of the Briza complex based on molecular data that included three other related genera, Erianthecium Parodi, Rhombolytrum, and Gymnachne Parodi. This study resulted in the acceptance of Briza s. str. with four Eurasian species, and in the proposal of a new circumscription for the genus Chascolytrum, including all the accepted South American species previously assigned to the other genera cited above. The necessary new combinations resulting from this new circumscription are proposed in the present work. Agron. Veterin. (Buenos Aires) 3: 133. 1920, syn. nov. TYPE: Poidium brasiliense Nees ex Steud. Chondrachyrum Nees, Nat. Syst. Bot. 449. 1836. Melica subsect. Chondrachyrum (Nees) W. Hempel, Feddes Repert. 84(7–8): 541. 1973. TYPE: Chondrachyrum scabrum Nees ex Steud. Gymnachne Parodi, Notas Mus. La Plata, Bot. 3: 29. 1938, syn. nov. TYPE: Gymnachne jaffuelii Parodi. Erianthecium Parodi, Notas Mus. La Plata, Bot. 8: 75, f. 1. 1943, syn. nov. TYPE: Erianthecium bulbosum Parodi. Lombardochloa Roseng. & B. R. Arrill., Anales Fac. Quimica Montevideo 9: 260. 1979. Briza sect. Lombardochloa (Roseng. & B. R. Arrill.) LonghiWagner, Bol. Inst. Bioci. Univ. Fed. Rio Grande do Sul 41: 22. 1987, syn. nov. TYPE: Lombardochloa rufa (J. Presl) Roseng. & B. R. Arrill. Microbriza Parodi ex Nicora & Rúgolo, Darwiniana 23(1): 292. 1981, syn. nov. TYPE: Microbriza poimorpha (J. Presl) Parodi ex Nicora & Rúgolo. MATERIALS AND METHODS This work was based on field collections, traditional revision of herbaria, and review of literature. Field collections covered the southernmost Brazilian states. The following herbaria were consulted: B, BLA, BM, Centro Nacional de Pesquisa em Ovinos, CONC, CORD, FLOR, G, GUA, HAS, HB, HBR, ICN, K, L, LINN, LPB, M, MBM, MO, MSB, NY, P, PACA, RB, S, SGO, SMDB, UEC, VIC, and W. Electronic images provided by BAA, GOET, PR, and US were also examined. 1. Chascolytrum ambiguum (Hack.) Essi, LonghiWagner & Souza-Chies, comb. nov. Basionym: Briza ambigua Hack., Oesterr. Bot. Z. 52(8): 308. 1902. Poidium ambiguum (Hack.) Matthei, Willdenowia 8: 121. 1975. TYPE: Brazil. ‘‘Brasilia, in provincia Rio de Janeiro,’’ 1889, A. F. M. Glaziou 17956 (holotype, W-17140; isotypes, BAA-361 [B fragm.] not seen, CP not seen, G, K, LE not seen, MO, US-865537 [W fragm., image seen]). Chascolytrum Desv., Nouv. Bull. Sci. Soc. Philom. Paris 2: 190. 1810. Briza sect. Chascolytrum (Desv.) Benth. & Hook., Gen. Pl. 3(2): 1195. 1883. Briza subg. Chascolytrum (Desv.) Parodi, Revista Fac. Agron. Veterin. (Buenos Aires) 3: 120. 1920. TYPE: Chascolytrum subaristatum (Lam.) Desv. 2. Chascolytrum bidentatum (Roseng., B. R. Arrill. & Izag.) Essi, Longhi-Wagner & Souza-Chies, comb. nov. Basionym: Briza bidentata Roseng., B. R. Arrill. & Izag., Bol. Fac. Agron. Univ. Montevideo 105: 24. 1968. Replaced name: Eragrostis monandra Hack., Repert. Spec. Nov. Regni Veg. 7: 320. 1909. Blocking name: Briza monandra (Hack.) Pilg., Notizbl. Bot. Gart. Berlin-Dahlem 10(97): 725. 1929. Rhombolytrum monandrum (Hack.) Nicora & Rúgolo, Darwiniana 23: 302. 1981. TYPE: Brazil. Rio Grande do Sul: ‘‘Rio Pardo, prope Fazenda Soledade,’’ 70 m, Dec. 1905, C. Jürgens s.n. (holotype, W; isotypes, BAA not seen, US90610 not seen). Calotheca Desv., Nouv. Bull. Sci. Soc. Philom. Paris 2: 190. 1810, nom. orth. cons., non Calosteca Desv. Briza sect. Calotheca (Desv.) Benth. & Hook., Gen. Pl. 3(2): 1195. 1883. Briza subg. Calotheca (Desv.) Parodi, Revista Fac. Agron. Veterin. (Buenos Aires) 3: 130. 1920, syn. nov. TYPE: Calotheca brizoides (Lam.) Desv. Rhombolytrum Link, Hort. Berol. 2: 296. 1833, syn. nov. TYPE: Rhombolytrum rhomboideum Link. Poidium Nees, Intr. Nat. Syst. Bot. 450. 1836. Briza sect. Poidium (Nees) Ekman, Ark. Bot. 13(10): 70. 1913. Briza subg. Poidium (Nees) Parodi, Revista Fac. 3. Chascolytrum brachychaetum (Ekman) Essi, Longhi-Wagner & Souza-Chies, comb. nov. Basionym: Briza brachychaete Ekman, Ark. Bot. 13(10): 60. 1913. Poidium brachychaetum (Ekman) Matthei, Willdenowia 8: 107. 1975. Microbriza brachychaete (Ekman) Parodi ex Nicora & Rúgolo, Darwiniana 23(1): 296. 1981. TYPE: Brazil. [Paraná:] ‘‘altoplanitie, Curytiba, in campo,’’ 15 Feb. 1911, P. K. Dusén 13390 (holotype, S; isotypes, BAA-367 NEW COMBINATIONS 328 Novon [B fragm.] not seen, BM, K, L, US-601229 [S fragm., image seen], US-865538 [S fragm., image seen], W-39083 not seen). 4. Chascolytrum brasiliense (Nees ex Steud.) Essi, Longhi-Wagner & Souza-Chies, comb. nov. Basionym: Poidium brasiliense Nees ex Steud., Syn. Pl. Glumac. 1(3): 288. 1854. Briza brasiliensis (Nees ex Steud.) Ekman, Ark. Bot. 13(10): 57. 1913. Poa poidium Döll, Fl. Bras. 2(3): 119. 1878. TYPE: Brazil. ‘‘civit. Paraná, in parte septentrionali civitatis,’’ s.d., F. Sellow 4848 (lectotype, designated here, BAA [image seen]; duplicate, US-98434 [image seen]). Notes. According to Matthei (1975), the holotype of Poidium brasiliense Nees ex Steud. (Sellow 4848 at B herbarium) was destroyed; therefore, he proposed a neotype, Glaziou 6774 (P). However, this specimen belongs to Briza itatiaiae Ekman, which Matthei (1975) placed in synonymy. In the present study B. itatiaiae is accepted as Chascolytrum itatiaiae (Ekman) Essi, Longhi-Wagner & Souza-Chies. Nicora and Rúgolo de Agrasar (1981) had already noticed this problem and indicated there was a fragment of the holotype of P. brasiliense Nees ex Steud. at the herbarium BAA. This material was analyzed and confirmed as belonging to the original type collection of P. brasiliense Nees ex Steud. Another fragment of Sellow 4848 was found at US. The neotype proposed by Matthei (1975: 112) cannot be accepted, and furthermore it belongs to B. itatiaiae according to the circumscription accepted here. The specimen Sellow 4848 (BAA) is now proposed as a lectotype. The fragment from BAA was chosen for lectotypification because it is the material discussed in detail (including leaf anatomy) by Nicora and Rúgolo de Agrasar (1981). 5. Chascolytrum brizoides (Lam.) Essi, LonghiWagner & Souza-Chies, comb. nov. Basionym: Bromus brizoides Lam., Tabl. Encycl. 1: 193. 1791. Calotheca brizoides (Lam.) Desv., Nouv. Bull. Sci. Soc. Philom. Paris 2: 190. 1810. Briza brizoides (Lam.) Kuntze, Revis. Gen. Pl. 3(3): 341. 1898. TYPE: Uruguay. ‘‘E. Monte-Video,’’ P. Commerson s.n. (holotype, P). Briza patula Phil., Anales Univ. Chile 94: 163. 1896. TYPE: Chile. supra Angol, Nov. 1887 (holotype, SGO62648 not seen). Briza tandilensis Parodi, Revista Fac. Agron. Veterin. (Buenos Aires) 3: 132. 1920. TYPE: Argentina. Buenos Aires: cerros del Tandil, Nov. 1919, L. R. Parodi s.n. (holotype, BAA [image seen]; isotype, US1108548 [BAA fragm.]). 6. Chascolytrum bulbosum (Parodi) Essi, LonghiWagner & Souza-Chies, comb. nov. Basionym: Erianthecium bulbosum Parodi, Notas Mus. La Plata, Bot. 8: 77, fig. 1. 1943. TYPE: Uruguay. Minas: cerro Arequita, frecuente en pedregal arbustivo y pratense, 15 Oct. 1939, B. Rosengurtt 3154 (holotype, BAA [image seen]). 7. Chascolytrum calotheca (Trin.) Essi, LonghiWagner & Souza-Chies, comb. nov. Basionym: Eragrostis calotheca Trin., Mem. Acad. Imp. Sci. St. Pétersbourg, Sér. 6, Sci. Math. 1(4): 414. 1830. Poa calotheca (Trin.) Kunth, Enum. Pl. 1: 340. 1833. Briza calotheca (Trin.) Hack., Bull. Herb. Boissier, sér. 2, 4(3): 282. 1904. Poidium calotheca (Trin.) Matthei, Willdenowia 8: 116. 1975. TYPE: [Brazil. São Paulo:] ‘‘V. spp. Bras. Sto. Paulo, in fruticeis humidis prope Jundiahy,’’ Oct. 1825, Riedel s.n. (holotype, LE-TRIN2315 not seen; isotypes, LE not seen, US2891459 [image seen]). Briza poa Nees ex Steud., Syn. Pl. Glumac. 1: 283. 1854. TYPE: Brasilia, F. Sellow s.n. (lectotype, designated by Matthei [1975: 116], CGE not seen; duplicates, BAA-391 [B fragm.] not seen, LE-TRIN-2552 not seen). Briza neesii Döll, Fl. Bras. 2(3): 132. 1878. nom. illeg. superfl. Briza neesii Döll var. flaccida Döll, Fl. Bras. 2(3): 133. 1878. TYPE: Brazil. Anonymous s.n. [Academiae Petropolitanae specimina] (holotype, LE not seen). 8. Chascolytrum itatiaiae (Ekman) Essi, LonghiWagner & Souza-Chies, comb. nov. Basionym: Briza itatiaiae Ekman, Ark. Bot. 13(10): 58, t. 4, fig. 1. 1913. Poidium itatiaiae (Ekman) Nicora & Rúgolo, Darwiniana 23(2): 306. 1981. TYPE: Brazil. [Minas Gerais:] ‘‘Serra do Itatiaia, in monticulo Serra da Pedra Assentada,’’ 2400 m, 19 May 1902, P. K. Dusén 292 (lectotype, designated by Matthei [1975: 112], S; duplicates, R not seen, US not seen). 9. Chascolytrum koelerioides (Trin.) Essi, LonghiWagner & Souza-Chies, comb. nov. Basionym: Poa koelerioides Trin., Mem. Acad. Imp. Sci. StPétersbourg, Sér. 6, Sci. Math., Seconde Pt. Sci. Nat. 4, 2(1): 62. 1836. Gymnachne koelerioides (Trin.) Parodi, Revista Argent. Agron. 29(1–2): 19. 1962 [1963]. TYPE: Chile. Quillota: ‘‘in pascuis sylvaticis collium editiorum,’’ Oct. 1829, C. G. Bertero 947 (lectotype, designated here, P; duplicates, LE not seen, US-88773 [P fragm., image seen]). Poa tenuiculmis Steud., Syn. Pl. Glumac. 1: 259. 1854, nom. illeg. superfl. Volume 21, Number 3 2011 Essi et al. 329 New Combinations in the Briza Complex Rhombolytrum berteroanum E. Desv., Fl. Chil. 6: 387. 1854. TYPE: Chile: Los Llanos, provincia de Valdivia, [C.] Gay [Mouret] 298 (lectotype, designated here, P; duplicates, K, US-90608 [image seen]). Gymnachne jaffuelii Parodi, Notas Mus. La Plata, Bot. 3(17): 30. 1938. TYPE: Chile. Concepción: F. Jaffuel 1884 (holotype, BAA not seen). 11. Chascolytrum poomorphum (J. Presl) Essi, Longhi-Wagner & Souza-Chies, comb. nov. Basionym: Panicum poomorphum J. Presl, in C. Presl, Reliq. Haenk. 1(4–5): 310. 1830, as ‘‘poaemorphum.’’ Briza poomorpha (J. Presl) Henrard, Meded. Rijks-Herb. 40: 73. 1921, as ‘‘poaemorpha.’’ Poidium poomorphum (J. Presl) Matthei, Willdenowia 8: 108. 1975, as ‘‘poaemorphum.’’ Microbriza poomorpha (J. Presl) Parodi ex Nicora & Rúgolo, Darwiniana 23(1): 295. 1981, as ‘‘poaemorpha.’’ TYPE: Peru. ‘‘Hab. in montanis Peruviae huanoccensibus,’’ s.d., T. Haenke s.n. (holotype, PR [image seen]; isotypes, B not seen, BAA not seen, US-975970 not seen). Notes. Two syntypes were cited in the protologue of Poa koelerioides Trin., one collected by C. G. Bertero (C. G. Bertero 947) and another attributed to Prescott (Prescott 1832). The latter specimen is considered by Soreng et al. (2003) as being from the same collection C. G. Bertero 947. The collection C. G. Bertero 947 is also included in the protologue of Rhombolytrum berteroanum E. Desv. as one of the two syntypes (the other specimen is the collection Gay 298, P, duplicates K, US-90608 [image seen]). The specimen seen at P (Bertero 947) is well conserved and matches with the original description of P. koelerioides Trin. It also matches with its synonym R. berteroanum E. Desv., but for this last species the collection Gay 298 was preferred in order to avoid using the same lectotype for two different names. 10. Chascolytrum monandrum (Hack.) Essi, Longhi-Wagner & Souza-Chies, comb. nov. Basionym: Poa monandra Hack., Oesterr. Bot. Z. 52(10): 376–377. 1902. Briza monandra (Hack.) Pilg., Notizbl. Bot. Gart. Berlin-Dahlem 10(97): 725. 1929. Poidium monandrum (Hack.) Matthei, Willdenowia 8: 103. 1975. TYPE: prope Cutervo, May 1879, C. von Jelski 402 (holotype, W-41656; isotypes, US-88757 [W fragm., image seen], W-14194). Calotheca stricta Hook. & Arn. var. mandoniana Griseb., Abh. Königl. Ges. Wiss. Göttingen 24: 289. 1879. Briza mandoniana (Griseb.) Henrard, Meded. RijksHerb. 40: 70. 1921. TYPE: Bolivia. G. Mandon [1356] (holotype, GOET; isotypes, G, GH not seen, L not seen, LE not seen, P, S not seen, W). Briza lilloi Parodi, Revista Fac. Agron. Veterin. (Buenos Aires) 3: 133, f. 7(1). 1920. TYPE: Argentina. Tucuruan, La Cienaga, 1905, M. Lillo 4094 (holotype, BAA not seen). Briza mandoniana (Griseb.) Henrard var. herzogiana Henrard, Meded. Rijks-Herb. 40: 71. 1921. TYPE: ‘‘Auf Alpenwiesen bei Choquetanga grande,’’ Oct. 1911, T. Herzog 3017 (holotype, L; isotype, L). Briza mandoniana (Griseb.) Henrard var. tuberculata Henrard, Meded. Rijks-Herb. 40: 71. 1921. TYPE: ‘‘In vicinis Sorata, cerro del Iminapi in humo pingui,’’ Jan.–Mar. 1860, G. Mandon 1355 (holotype, L; isotypes, BM, G, K, NY, P, S, US-865545 not seen, W). Briza mandoniana (Griseb.) Henrard var. vallegrandensis Henrard, Meded. Rijks-Herb. 40: 71. 1921. TYPE: ‘‘In subalpinen Gebüsch des Berges über Vallegrande,’’ Mar. 1911, T. Herzog 1879 (holotype, L; isotypes, L, S, US-865546 not seen). Isachne hackelii Lindm., Kongl. Svenska Vetenskapsakad. Handl., n.s. 34(6): 11, t. 5. 1900. Briza hackelii (Lindm.) Ekman, Ark. Bot. 13(10): 61. 1913. TYPE: Bras. Civ. Rio Grande do Sul: Porto Alegre, Parthenon, C. A. M. Lindman [Exp. I. Regn.] A595 (holotype, W not seen; isotype, US-702321 not seen). Briza hackelii f. pseudisachne Ekman, Ark. Bot. 13(10): 61. 1913. TYPE: Bras. Civ. Rio Grande do Sul: Rio Grande do Sul oppidum in campo arenoso loco subumido, 7 Nov. 1901, G. Malme [Exp. Regn.] 250 (holotype, S). 12. Chascolytrum rhomboideum (Link) Essi, Longhi-Wagner & Souza-Chies, comb. nov. Basionym: Rhombolytrum rhomboideum Link, Hort. Berol. 2: 296. 1833, as ‘‘Rhomboelytrum.’’ TYPE: Chile. ‘‘Habitat in Chile, e seminibus ideallitis enata,’’ Anonymous s.n. (holotype, B not seen; isotypes, BAA-2759 [B fragm.] not seen, P, US-946981b not seen). Poa tumidula Steud., Syn. Pl. Glumac. 1: 258. 1854. TYPE: Chile. Cachapuel Rancagua, Bertero 277 (lectotype, designated here, P; duplicate, US-90609 [image seen]). Rhombolytrum quinquenervium Phil., Linnaea 33(3–4): 293. 1864. TYPE: ‘‘Prope ‘los Molles’ in prov. Aconcagua,’’ R. A. Philippi s.n. (holotype, SGO not seen; isotypes, P not seen, US not seen). 13. Chascolytrum uniolae (Nees) Essi, LonghiWagner & Souza-Chies, comb. nov. Basionym: Eragrostis uniolae Nees, Fl. Bras. Enum. Pl. 2(1): 494. 1829. Briza uniolae (Nees) Nees ex Steud., Syn. Pl. Glumac. 1: 283. 1854. Poidium uniolae (Nees) Matthei, Willdenowia 8: 93. 1975. TYPE: [Brazil or Paraguay.] ‘‘Habitat in confinibus regni Paraguayani,’’ F. Sellow s.n. (holotype, B not seen; isotypes, BAA-405 [B. fragm., image seen], LE-TRIN-2405.01 not seen). Chascolytrum spicigerum J. Presl, Reliq. Haenk. 1(4–5): 282. 1830. Briza spicigera (J. Presl) Steud., Nomencl. 330 Novon Bot. (ed. 2) 1: 225. 1840. TYPE: ‘‘Hab. in Peruviae montanis et in Chile,’’ T. Haenke s.n. (holotype, PR not seen; isotypes, M not seen, MO, US [fragm.] not seen, W). Briza uniolae (Nees) Nees ex Steud. var. modestior Döll, Fl. Bras. 2(3): 131. 1878. TYPE: ‘‘In insula S. Catharinae,’’ F. Müller s.n. (holotype, B; isotype, US [fragm.] not seen). Longhi-Wagner, H. M. 1987. Briza L. in Flora Ilustrada do Rio Grande do Sul, Fasc. 17. Gramineae, tribo Poeae. Bol. Inst. Bioc. Univ. Fed. Rio Grande do Sul 41: 18–68. Matthei, O. 1975. Der Briza-Komplex in Südamerika: Briza, Calotheca, Chascolytrum, Poidium (Gramineae). Willdenowia 8: 7–168. Nicora, E. G. & Z. E. Rúgolo de Agrasar. 1981. Los géneros sudamericanos afines a Briza L. (Gramineae). Darwiniana 23(1): 279–309. Parodi, L. R. 1920. Notas sobre las especies de Briza de la Flora Argentina. Revista Fac. Agron. Veterin. 3: 113– 137. Rosengurtt, B., B. R. Arrillaga de Maffei & P. Izaguirre de Artucio. 1968. Sinopsis de Briza (Gramineae) del Uruguay y notas taxonómicas sobre otras especies de este género. Bol. Fac. Agron. Univ. Montevideo 105: 1– 35. Rosengurtt, B., B. Arrillaga de Maffei & P. Izaguirre de Artucio. 1970. Gramı́neas Uruguaias. Departamento de Publicaciones, Universidad de la Republica, Montevideo. Smith, L. B., D. C. Wasshausen & R. M. Klein. 1981. Gramı́neas, I parte. Pp. 230–256 in R. Reitz (editor), Flora Ilustrada Catarinense. Herbário Barbosa Rodrigues, Itajaı́. Soreng, R. J., P. M. Peterson, G. Davidse, E. J. Judziewicz, F. O. Zuloaga, T. S. Filgueiras & O. Morrone. 2003. Catalogue of New World grasses (Poaceae): IV. Subfamily Pooideae. Contr. U.S. Natl. Herb. 48: 1–730. Acknowledgments. We thank the curators of the relevant herbaria for allowing the review of specimens, for sending type images, and for the loan of material, and the referees for useful advice. We also acknowledge financial support from the Conselho Nacional de Desenvolvimento Cientı́fico e Tecnológico (CNPq), Brazil, and the Margaret Mee Foundation. Literature Cited Bayón, N. D. 1998. Cladistic analysis of the Briza complex (Poaceae, Poeae). Cladistics 14: 287–296. Ekman, E. L. 1913. Die Gräser des brasilianischen Staates Paraná. Ark. Bot. 13(10): 1–83. Essi, L., H. M. Longhi-Wagner & T. T. Souza-Chies. 2008. Phylogenetic analysis of the Briza complex (Poaceae). Molec. Phylogen. Evol. 47(3): 1018–1029. Linnaeus, C. 1753. Briza L. Pp. 70–71 in Species Plantarum, Vol. 1. Stockholm.