Journal
LICHENOLOGIST
Volume 45, Issue 4, Pages 545-552Publisher
CAMBRIDGE UNIV PRESS
DOI: 10.1017/S0024282913000200
Keywords
Amazonas; Ceara; Paraiba; lichens; Pernambuco; Rondonia; Trypetheliaceae
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Funding
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) [501633/2009-0]
- CNPq-Protax Processo [562.330/2010-0]
- INCT-Herbario Virtual Processo [573.883/2008-4]
- Fundacao de Amparo a Ciencia e Tecnologia do Estado de Pernambuco (FACEPE)
- Coordenacao de Aperfeicamento de Pessoal de Nivel Superior (CAPES)
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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.
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