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Caloplaca phlogina, a lichen with two facies; an example of infraspecific variability resulting in the description of a redundant species

Published online by Cambridge University Press:  01 October 2010

Jan VONDRÁK
Affiliation:
Department of Botany, Faculty of Science, University of South Bohemia, Branišovská 31, CZ-370 05, České Budějovice, Czech Republic. Email: j.vondrak@seznam.cz
Jaroslav ŠOUN
Affiliation:
Department of Botany, Faculty of Science, University of South Bohemia, Branišovská 31, CZ-370 05, České Budějovice, Czech Republic. Email: j.vondrak@seznam.cz
Majbrit Zeuthen SØGAARD
Affiliation:
Section on Ecology and Evolution, Department of Biology, University of Copenhagen, Universitetsparken 15, 2100 Copenhagen Ø, Denmark.
Ulrik SØCHTING
Affiliation:
Section on Ecology and Evolution, Department of Biology, University of Copenhagen, Universitetsparken 15, 2100 Copenhagen Ø, Denmark.
Ulf ARUP
Affiliation:
Botanical Museum, Lund University, Östra Vallgatan 18, SE–223 61 Lund, Sweden.

Abstract

Caloplaca phlogina is shown here to have two kinds of soralia, yellow soralia with anthraquinones versus whitish or white-green soralia lacking pigments. Both kinds are present, growing side by side, in some localities in Scandinavia, but yellow soralia appear to be more common. In contrast, the populations from halophilous shrubs on the Black Sea coast have predominantly white soralia, and they were described as a separate species, C. scythica. A single collection from Chile also has white soralia. Molecular data and phenotype examinations convinced us that Scandinavian and Black Sea populations are conspecific. We consider the North European, phenotypically variable population as a source for the Black Sea population which is ecologically and phenotypically more uniform.

Information

Type
Research Article
Copyright
Copyright © British Lichen Society 2010

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