Hostname: page-component-76fb5796d-wq484 Total loading time: 0 Render date: 2024-04-29T21:33:29.678Z Has data issue: false hasContentIssue false
  • English
  • Français

Pyrenocarpous lichens (except Trypetheliaceae) in Rondônia

Published online by Cambridge University Press:  31 October 2013

André APTROOT  and
Marcela Eugenia da Silva CÁCERES
André APTROOT
Affiliation:
ABL Herbarium, G.v.d.Veenstraat 107, NL-3762 XK Soest, The Netherlands. Email: andreaptroot@gmail.com
Marcela Eugenia da Silva CÁCERES
Affiliation:
Departamento de Biociências, Universidade Federal de Sergipe, CEP: 49500-000, Itabaiana, Sergipe, Brazil
Get access Rights & Permissions [Opens in a new window]

Abstract

The following new species of pyrenocarpous lichens are described from Rondônia: Agonimia tenuiloba: corticolous, thallus with minute flabellate lobes developing goniocysts; ascomata smooth, grey, ellipsoidal; ascospores densely muriform, 30–50(–76)×20–35 µm. Anisomeridium lateriticum: saxicolous; conidiomata sessile, pyriform, ostiole with brown and hyaline septate setae; conidia simple to 1-septate, 8–11×2·0–2·5 µm. Anisomeridium triseptatum: corticolous, ascomata with lateral ostioles; ascospores (1–)3-septate, 25–30×7·5–10·0 µm, often with gelatinous appendages. Mycomicrothelia megaspora: ascospores ornamented, 1-septate, (27–)29–35(–40)×8–12 µm, often with a gelatinous layer 6–15 µm thick. Porina linearispora: corticolous; thallus green, shiny; ascomata immersed, 0·2–0·3 mm; ascospores filiform, (7–)9(–13)-septate, 75–90×1·5–2·0 µm. Porina maxispora: corticolous; thallus green, matt; ascomata immersed, 0·5–0·7 mm; ascospores filiform, (17–)23–35-septate, 95–110×4·5–5·5 µm. Porina novemseptatoides: saxicolous; thallus very thin, brown, glossy; ascomata superficial, 0·1–0·2 mm; ascospores fusiform, (7–)9-septate, 21–24×4·5–5·0 µm, with a c. 5 µm thick gelatinous layer. Porina termitophila: terricolous; thallus greyish green; ascomata emergent, 0·15–0·20 mm; ascospores fusiform, 1–3-septate, 13–15×2·5–3·0 µm. Pyrenula bispora: corticolous, thallus whitish, ascomata dispersed; hamathecium inspersed; ascospores 2 per ascus, muriform, 55–75×19–23 µm. Pyrenula leptaleoides: corticolous; thallus green to pale brown; ascomata deeply immersed in bark, with long necks fused in joint ostioles visible as brown dots on the surface; ascospores 23–27×8–11 µm, with rather angular lumina. Pyrenula rhomboidea: corticolous; thallus olive-brown; ascomata single, immersed; ascospores irregularly uniseriate, clavate-rhomboidal, 11–13×3·5–4·0 µm.

A key is provided to all species of pyrenocarpous lichens (except Trypetheliaceae) found in Rondônia. Nearly all species are new reports for Rondônia. Aspidothelium glabrum, Pyrenula leucotrypa and P. micheneri are newly reported for South America. The usually foliicolous Strigula nitidula is reported for the first time from bark.

The high lichen diversity is explained by the poor soils, supporting an only moderately dense forest where enough light can reach the tree trunks at ground level to support a rich flora of crustose lichens usually confined to the upper trunks.

Keywords

AmazonasArthopyreniaceaeidentification keyMonoblastiaceaenew speciesPorinaceaePyrenulaceaeStrigulaceaeVerrucariaeae
Type
Articles
Information
The Lichenologist , Volume 45 , Issue 6 , November 2013 , pp. 763 - 785
Copyright
Copyright © British Lichen Society 2013 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Aptroot, A. (1991) A Monograph of the Pyrenulaceae (excl. Anthracothecium and Pyrenula) and the Requienellaceae, with notes on the Pleomassariaceae, the Trypetheliaceae and Mycomicrothelia (lichenized and non-lichenized Ascomycetes). Bibliotheca Lichenologica 44: 1–178.Google Scholar
Aptroot, A. (1997) Lichen biodiversity in Papua New Guinea, with the report of 173 species on one tree. Bibliotheca Lichenologica 68: 203–213.Google Scholar
Aptroot, A. (2012) A world key to the species of Anthracothecium and Pyrenula . Lichenologist 44: 5–53.Google Scholar
Aptroot, A. & Cáceres, M. E. S. (2014) New lichen species from termite nests in rainforest in Brazilian Rondônia and adjacent Amazonas. Lichenologist 46: (in press).CrossRefGoogle Scholar
Aptroot, A. & Sipman, H. J. M. (1993) Trichotheliaceae (lichens). Flora of the Guianas, Series E 2: 1–57.Google Scholar
Aptroot, A., Lücking, R., Sipman, H. J. M., Umaña, L. & Chaves, J. L. (2008) Pyrenocarpous lichens with bitunicate asci. A first assessment of the lichen biodiversity inventory in Costa Rica. Bibliotheca Lichenologica 98: 1–162.Google Scholar
Aptroot, A., Sipman, H. J. M. & Cáceres, M. E. S. (2013) Twenty-one new species of Pyrenula from South America, with a note on over-mature ascospores. Lichenologist 45: 169–198.Google Scholar
Cáceres, M. E. S. (2007) Corticolous crustose and microfoliose lichens of northwestern Brazil. Libri Botanici 22: 1–168.Google Scholar
Cáceres, M. E. S., Santos, M. W. O., Mendonça, C. O., Mota, D. A. & Aptroot, A. (2013) New lichen species of the genera Porina and Byssoloma from an urban Atlantic rainforest patch in Sergipe, NE Brazil. Lichenologist 45: 379–382.CrossRefGoogle Scholar
Colinvaux, P. A., De Oliveira, P. E. & Bush, M. B. (2000) Amazonian and neotropical plant communities on glacial time-scales: the failure of the aridity and refuge hypotheses. Quaternary Science Reviews 19: 141–169.Google Scholar
Guzow-Krzemińska, B., Halda, J. P. & Czarnota, P. (2012) A new Agonimia from Europe with a flabelliform thallus. Lichenologist 44: 55–66.Google Scholar
Harris, R. C. (1995) More Florida Lichens. New York: Published by the author. Google Scholar
Hooghiemstra, H. & van der Hammen, T. (1998) Neogene and Quaternary development of the neotropical rain forest: the forest refugia hypothesis, and a literature overview. Earth-Science Reviews 44: 147–183.Google Scholar
Komposch, H., Aptroot, A. & Hafellner, J. (2002) New species of lichenized and non-lichenized ascomycetes from a rainforest canopy in southern Venezuela. Lichenologist 34: 223–235.CrossRefGoogle Scholar
Lücking, L. (2008) Foliicolous lichenized fungi. Flora Neotropica Monograph 103: 1–866.Google Scholar
McCarthy, P. M. (1993) Saxicolous species of Porina Müll. Arg. (Trichotheliaceae) in the Southern Hemisphere. Bibliotheca Lichenologica 52: 1–134.Google Scholar
McCarthy, P. M. & Elix, J. A. (1996) Myeloconis, a new genus of pyrenocarpous lichens from the tropics. Lichenologist 28: 401–414.CrossRefGoogle Scholar
Menezes, A. A., Xavier-Leite, A. B., Aptroot, A. & Cáceres, M. E. S. (2013) New lichen species from the Caatinga in Chapada do Araripe, NE Brazil. Bryologist 116: (in press).Google Scholar
Sipman, H. J. M. & Aptroot, A. (2005) Notes on Mycomicrothelia (Arthopyreniaceae s. lat.), with two new species. Lichenologist 37: 307–311.CrossRefGoogle Scholar