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The Caloplaca crenulatella species complex; its intricate taxonomy and description of a new species

Published online by Cambridge University Press:  29 July 2011

Jan VONDRÁK ,
Pavel ŘÍHA ,
Olexii REDCHENKO ,
Olga VONDRÁKOVÁ ,
Pavel HROUZEK  and
Alexander KHODOSOVTSEV
Jan VONDRÁK
Affiliation:
Institut of Botany, Academy of Sciences, Zámek 1, CZ-252 43 Průhonice, Czech Republic. Email: [email protected]
Pavel ŘÍHA
Affiliation:
Department of Zoology, Faculty of Science, University of South Bohemia, Branišovská 31, České Budějovice.
Olexii REDCHENKO
Affiliation:
Kholodny Institute of Botany, National Academy of Sciences of Ukraine, 2 Tereshchenkivska Street, 01601 Kiev, Ukraine.
Olga VONDRÁKOVÁ
Affiliation:
Institute of Steppe (Urals Branch of Russian Academy of Sciences), Pionerskaya st. 11, Orenburg, RF–460000, Russia.
Pavel HROUZEK
Affiliation:
Department of Autotrophic Microorganisms, Institute of Microbiology, Academy of Sciences, Opatovický mlýn, Třeboň, CZ-379 81, Czech Republic.
Alexander KHODOSOVTSEV
Affiliation:
Kherson State University, 40 Rokiv Zhovtnya str. 27, 73000 Kherson, Ukraine.
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Abstract

The Caloplaca crenulatella species complex is monophyletic, based on analysis of ITS nrDNA sequences. It is characterized mainly by its ascospores and a simplified thallus. Caloplaca aquensis, C. borysthenica, C. interfulgens, C. lactea, C. marmorata and C. tominii represent well-defined monophyletic lineages within it. Caloplaca diffusa, described here as a new species, is a well-supported lineage with a distinctive phenotype. Caloplaca crenulatella s. lat. and C. ferrarii s. lat. are heterogeneous taxa appearing in four and two places respectively within our tree. Caloplaca ochracea also belongs to the group, although it has different ascospore characters. Caloplaca gyalolechiaeformis and C. pseudocitrina are later synonyms of C. tominii. Arctic and North American sorediate specimens morphologically very close to C. tominii represent a separate lineage recently recognized as C. erichansenii. The North American Caloplaca nashii has a C. crenulatella-like phenotype but does not belong to the C. crenulatella complex. The identities of Caloplaca lacteoides and Caloplaca epigaea are not clear, but the latter may be a terricolous ecotype of one of the entities within C. crenulatella s. lat. A key to the European species of the group is provided.

Keywords

Caloplaca lactea groupITS nrDNAlichensparaphyletic taxaphylogenyTeloschistaceae
Type
Research Article
Information
The Lichenologist , Volume 43 , Issue 5 , September 2011 , pp. 467 - 481
Copyright
Copyright © British Lichen Society 2011

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