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Issue: Vol. 289 No. 3: 29 December 2016
Type: Article
Published: 2016-12-29
DOI: 10.11646/phytotaxa.289.3.7
Page range: 271–278
Abstract views: 28
PDF downloaded: 1

A new species of Graphis (Graphidaceae: Lichenized Ascomycota) and a revised key of the genus in Rio Grande do Sul, southern Brazil

Universidade Federal do Rio Grande do Sul (UFRGS), Graduate Program in Botany, Laboratory of Mycology, CEP 91509-900—Porto Alegre, Rio Grande do Sul, Brazil
Universidade Federal do Rio Grande do Sul (UFRGS), Graduate Program in Ecology, CEP 91509-900—Porto Alegre, Rio Grande do Sul, Brazil
Universidade Feevale, Graduate Program in Environmental Quality, Laboratory of Botany, CEP 93525-075—Novo Hamburgo, Rio Grande do Sul, Brazil
Universidade Federal do Rio Grande do Sul (UFRGS), Graduate Program in Ecology, CEP 91509-900—Porto Alegre, Rio Grande do Sul, Brazil
Universidade Federal do Rio Grande do Sul (UFRGS), Graduate Program in Botany, Laboratory of Mycology, CEP 91509-900—Porto Alegre, Rio Grande do Sul, Brazil
Lichens microlichens corticolous lichens subtropical rain forests Atlantic Forest

Abstract

(A new species of Graphis [Graphidaceae: Lichenized Ascomycota] and a revised key of the genus in Rio Grande do Sul, southern Brazil). In this paper we describe a new species of the lichen genus Graphis, namely G. suzanae Koch & Feuerstein. This species is characterized mainly by lirellae with entire labia, a partially exposed disc with orange pigment in the epithecium, a lateral thalline margin, a laterally carbonized excipulum, a clear hymenium, and transversely septate ascospores measuring 40–44 × 8–10 μm. The chemistry of the species was assessed through TLC analysis. A complete key with G. suzanae and 56 more species of Graphis that where previously recorded to the state of Rio Grande do Sul, southern Brazil, is included.