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New species of Polymeridium from Brazil expand the range of known morphological variation within the genus

Published online by Cambridge University Press:  24 June 2013

André APTROOT ,
Aline Anjos MENEZES ,
Edvaneide Leandro de LIMA ,
Amanda Barreto XAVIER-LEITE  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
Aline Anjos MENEZES
Affiliation:
Programa de Pós-graduação em Ecologia e Conservação, Universidade Federal de Sergipe, CEP: 49100-000, São Cristóvão, Sergipe, Brazil
Edvaneide Leandro de LIMA
Affiliation:
Departamento de Micologia, Universidade Federal de Pernambuco, CEP: 50670-901, Recife, Pernambuco, Brazil
Amanda Barreto XAVIER-LEITE
Affiliation:
Programa de Pós-graduação em Ecologia e Conservação, Universidade Federal de Sergipe, CEP: 49100-000, São Cristóvão, Sergipe, Brazil
Marcela Eugenia da Silva CÁCERES
Affiliation:
Departamento de Biociências, Universidade Federal de Sergipe, CEP: 49500-000, Itabaiana, Sergipe, Brazil
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Abstract

Five new species of the genus Polymeridium are described from Brazil. All exhibit at least one character that was previously unknown in the genus: P. corticatum has a corticate thallus and 2 ascospores per ascus, P. immersum has the ascomata deeply immersed in the bark under the thallus, P. isohypocrellinum has a red, KOH+ green pigment (iso-hypocrellin) in the ostiole, P. julelloides has short and broad muriform (Julella-like) ascospores, and P. paraproponens has ascomata in groups of two to three. Brazil is clearly the centre of diversity of the genus. Iso-hypocrellin is a new substance for the genus.

Keywords

AmazonasCearáParaíbalichensPernambucoRondôniaTrypetheliaceae
Type
Articles
Information
The Lichenologist , Volume 45 , Issue 4 , July 2013 , pp. 545 - 552
Copyright
Copyright © British Lichen Society 2013 

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References

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