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Myochroidea, a new genus of corticolous, crustose lichens to accommodate the Lecidea leprosula group

Published online by Cambridge University Press:  06 June 2008

Christian PRINTZEN ,
Toby SPRIBILLE  and
Tor TØNSBERG
Christian PRINTZEN
Affiliation:
Department of Botany and Molecular Evolution, Forschungsinstitut Senckenberg, Senckenberganlage 25, D-60325 Frankfurt am Main, Germany. Email: christian.printzen@senckenberg.de
Toby SPRIBILLE
Affiliation:
Department of Vegetation Analysis, Albrecht von Haller Institute of Plant Sciences, University of Göttingen, Untere Karspüle 2, D-37073 Göttingen, Germany
Tor TØNSBERG
Affiliation:
Museum of Natural History, University of Bergen, Allégaten 41, N-5007 Bergen, Norway
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Abstract:

The new lichen genus Myochroidea is described to accommodate four species of the Lecidea leprosula group. Myochroidea is characterized by a crustose, areolate, minutely crenate to almost coralloid or indistinct, grey-brown to olive-brown thallus, reddish brown apothecia with an often persistent margin, moderately branched and anastomosing paraphyses with often swollen, pigmented apical cells, asci of the Micarea-type, and colourless, one-celled, fusiform to broadly ellipsoid ascospores. The new combinations Myochroidea leprosula (Arnold) Printzen, T. Sprib. & Tønsberg comb. nov., M. porphyrospoda (Anzi) Printzen, T. Sprib. & Tønsberg comb. nov., M. rufofusca (Anzi) Printzen, T. Sprib. & Tønsberg comb. nov. and the new species M. minutula Printzen, T. Sprib. & Tønsberg are published. Lecidea porphyroplaca Hinteregger & Poelt is a synonym of M. rufofusca. Descriptions of the four species and an identification key are provided. Myochroidea leprosula and M. rufofusca are reported as new to North America.

Keywords

corticolous lichensEuropenew speciestaxonomyWestern North America

Information

Type
Research Article
Information
The Lichenologist , Volume 40 , Issue 3 , May 2008 , pp. 195 - 207
Copyright
Copyright British Lichen Society 2008

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