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Reassessment of the genus Catillochroma (lichenized Ascomycota, Ramalinaceae)

Published online by Cambridge University Press:  03 August 2010

Alan M. FRYDAY  and
James C. LENDEMER
Alan M. FRYDAY
Affiliation:
Herbarium, Department of Plant Biology, Michigan State University, East Lansing, MI 48824-1312, USA. Email: [email protected]
James C. LENDEMER
Affiliation:
Cryptogamic Herbarium, Institute of Systematic Botany, The New York Botanical Garden, Bronx, NY, 10458-5126, USA.
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Abstract

The species assigned to the genus Catillochroma are reassessed. The two characters used to characterize Catillochroma, exciple anatomy and thalline chemistry, are shown to be variable and contradictory with a number of intermediates. Consequently, Catillochroma is reduced to synonymy with Megalaria, and the species previously placed in Catillochroma transferred, or returned, to Megalaria. As such, the following new combinations are proposed: Megalaria anaglyptica, M. endochroma, M. intermiscens and M. leptocheila. The genus Lopezaria is also shown to be related to Megalaria and to be closely related to the type species of Catillochroma, C. endochroma, and so is also reduced to synonymy with Megalaria. A number of species found to have been misplaced in Catillaria are also transferred to Megalaria: M. leucochlora, M. melanopotamica, M. obludens, M. pannosa and M. phaeolomiza. Megalaria imshaugii is reduced to synonymy with M. obludens, Megalaria pannosa is reported for the first time from North America and Lopezaria isidiza is reported for the first time from outside Asia from Jamaica.

Keywords

ascus structureCatillariachemistryconidiaexciple structureWest Indies
Type
Research Article
Information
The Lichenologist , Volume 42 , Issue 5 , September 2010 , pp. 587 - 600
Copyright
Copyright © British Lichen Society 2010

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