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Lichenized Species of Omphalina (Tricholomataceae) in the Iberian Peninsula

Published online by Cambridge University Press:  28 March 2007

José María Barrasa  and
Víctor J. Rico
José María Barrasa
Affiliation:
J. M. Barrasa: Departamento de Biología Vegetal, Universidad de Alcalá, E-28871 Alcalá de Henares, Madrid, Spain.
Víctor J. Rico
Affiliation:
V. J. Rico: Departamento de Biología Vegetal II, Facultad de Farmacia, Universidad Complutense, E-28040 Madrid, Spain.
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Abstract

A taxonomic revision of the lichenized species of the genus Omphalina in the Iberian Peninsula is presented, based upon fungal and lichen herbarium material, as well as on fresh collections. Relevant morphological and ecological features are discussed and a diagnostic key is provided. Four lichenized species, O. ericetorum, O. hudsoniana, O. meridionalis and O. velutina are recognized. A squamulose vegetative thallus (Coriscium-type) is present only in O. hudsoniana, while the other three species form a thallus of hyphal globules (Botrydina-type). Anatomical features of the vegetative thallus cannot be used to distinguish between these last three species. Whilst O. hudsoniana is known only from the montane belt of the Eurosiberian Region and O. meridionalis seems to restricted to the Mediterranean Region, living in more or less humid sites of the Supramediterranean belt, the other two species, O. ericetorum and O. velutina, are widespread.

Type
Research Article
Information
The Lichenologist , Volume 33 , Issue 5 , September 2001 , pp. 371 - 386
Copyright
Copyright © British Lichen Society 2001

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