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Malmographina, a new genus for Graphina malmei (Ascomycota: Ostropales: Graphidaceae)

Published online by Cambridge University Press:  12 December 2011

Marcela Eugenia da Silva CÁCERES ,
Eimy RIVAS PLATA  and
Robert LÜCKING
Marcela Eugenia da Silva CÁCERES
Affiliation:
Departamento de Biociências, Universidade Federal de Sergipe, CEP: 49.500-000, Itabaiana, Sergipe, Brazil.
Eimy RIVAS PLATA
Affiliation:
Department of Biological Sciences, University of Illinois-Chicago, 845 West Taylor Street (MC 066), Chicago, Illinois 60607, USA. Email: [email protected] Department of Botany, The Field Museum, 1400 South Lake Shore Drive, Chicago, Illinois 60605-2496, USA.
Robert LÜCKING
Affiliation:
Department of Biological Sciences, University of Illinois-Chicago, 845 West Taylor Street (MC 066), Chicago, Illinois 60607, USA. Email: [email protected]
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Abstract

The new genus Malmographina Cáceres, Rivas Plata & Lücking is introduced for Opegrapha plicosa Meissn. (syn. Graphis malmei Redinger), with the new combination Malmographina plicosa (Meiss.) Cáceres, Rivas Plata & Lücking. The taxon is characterized by prominent, striate, orange-pigmented, non-carbonized lirellae, a more or less clear hymenium, and large, muriform, hyaline ascospores. Malmographina is most similar to Hemithecium in lirellae morphology and anatomy, but in a molecular phylogenetic analysis falls within a clade containing Phaeographis and other genera with usually inspersed hymenium and brown ascospores. Within that clade, it is thus far the only taxon that has persistently hyaline ascospores. It is otherwise similar to Pallidogramme but does not cluster within that genus. A preliminary phylogenetic analysis of the Phaeographis clade confirms monophyly of the genera Halegrapha, Pallidogramme, and Platygramme, and suggests that Phaeographis should be divided into several generic lineages and that Leiorreuma and Sarcographa perhaps be merged.

Keywords

AmazoniaBrazilCreographaEctographislichensPeruPhlegographaSurinam
Type
Research Article
Information
The Lichenologist , Volume 44 , Issue 1 , January 2012 , pp. 115 - 120
Copyright
Copyright © British Lichen Society 2011

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