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Seven species of Graphis from Portugal reported new to Europe

Published online by Cambridge University Press:  28 July 2016

Zacarias LEPISTA
Affiliation:
Tr. dos Moínhos 2, 3º-A, Alfragide, 2610-121 Amadora, Portugal
André APTROOT*
Affiliation:
ABL Herbarium, G.v.d.Veenstraat 107, NL-3762 XK Soest, The Netherlands

Abstract

Seven Graphis species are reported as new to Europe from the Serra de Sintra and the Planalto das Cezaredas, two regions of Portugal where graphidoid Graphidaceae are abundant and diverse. The following species were identified: Graphis cincta, G. crebra, G. handelii, G. leptospora, G. lineola, G. plumierae, and G. verminosa. Many of these share two characters: a densely inspersed hymenium and the presence of norstictic acid in the thallus. A key to the Graphis species known from Europe is provided. The possible reasons for the high, previously unknown, diversity of graphidoid Graphidaceae in this region are discussed. Global warming might be a contributory factor.

Type
Articles
Copyright
© British Lichen Society, 2016 

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