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The lichen genus Psoromidium (Pannariaceae) re-evaluated, with nomenclatural notes on Degeliella and Psoromaria

Published online by Cambridge University Press:  09 September 2015

Per M. Jørgensen  and
Heidi Lie Andersen
Per M. Jørgensen
Affiliation:
Department of Natural History, University Museum, Box 7800, NO-5020 Bergen, Norway. Email: per.jorgensen@um.uib.no
Heidi Lie Andersen
Affiliation:
Department of Natural History, University Museum, Box 7800, NO-5020 Bergen, Norway. Email: per.jorgensen@um.uib.no
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Abstract

Molecular studies have shown that Psoromidium is well separated from Psoromaria and Degeliella, when including the type species only. The latter generic name is illegitimate and the correct name for the other species sometimes included in Psoromidium is shown to be Psoromaria versicolor (Müll. Arg.) P. M. Jørg. & H. L. Andersen, comb. nov. It is the type species of the genus Psoromaria Nyl. ex Hue. The inclusion of Degeliella rosulata in Psoromaria is unresolved, according to the molecular evidence. However, its characters (except the photobiont) match those of Psoromaria, rather than those of the other species with which it groups. So for nomenclature reasons it is transferred to this genus, as Psoromaria rosulata (P. M. Jørg. & D. J. Galloway) P. M. Jørg. & H. L. Andersen comb. nov.

Keywords

austral biogeographymolecular phylogenynomenclature
Type
Articles
Information
The Lichenologist , Volume 47 , Issue 5 , September 2015 , pp. 343 - 348
Copyright
© British Lichen Society, 2015 

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