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Two new brown-spored species of Pertusaria from south-western North America

Published online by Cambridge University Press:  22 August 2006

Imke SCHMITT ,
H. Thorsten LUMBSCH  and
Charis BRATT
Imke SCHMITT
Affiliation:
Botany Department, The Field Museum, 1400 S. Lake Shore Dr., Chicago, IL 60605, USA
H. Thorsten LUMBSCH
Affiliation:
Botany Department, The Field Museum, 1400 S. Lake Shore Dr., Chicago, IL 60605, USA
Charis BRATT
Affiliation:
Santa Barbara Botanic Garden, 1212 Mission Canyon Road, Santa Barbara, CA 93105, USA
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Abstract

Two new Pertusaria species with brown ascospores are described from southern California and Baja California, Mexico. Pertusaria islandica sp. nov. is characterized by pertusariate to pseudolecanorate ascomata, ellipsoid ascospores, 8-spored asci, a strongly K+ violet reacting epithecium, and the presence of the 2′-O-methylperlatolic acid chemosyndrome, while P. occidentalis sp. nov. has pertusariate ascomata, globose to subglobose ascospores, 8-spored asci, and contains the arthothelin chemosyndrome. Pertusaria ochracea Kremp. is reduced to synonymy with P. melanospora Nyl.

Keywords

Melanarianew taxaPertusaria islandicaPertusaria melanosporaPertusaria occidentalisPertusaria ochraceaPertusarialesSonoran desert
Type
Research Article
Information
The Lichenologist , Volume 38 , Issue 5 , September 2006 , pp. 411 - 416
Copyright
© British Lichen Society 2006

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