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Silobia, a new genus for the Acarospora smaragdula complex (Ascomycota, Acarosporales) and a revision of the group in Sweden

Published online by Cambridge University Press:  16 December 2010

Martin WESTBERG ,
Anna T. CREWE ,
O. William PURVIS  and
Mats WEDIN
Martin WESTBERG
Affiliation:
Cryptogamic Botany, Swedish Museum of Natural History, P.O. Box 50007, SE-104 05 Stockholm, Sweden. Email: Martin.Westberg@nrm.se
Anna T. CREWE
Affiliation:
Department of Ecology and Environmental Science, Umeå University, SE-901 87 Umeå, Sweden.
O. William PURVIS
Affiliation:
Department of Botany, Natural History Museum, Cromwell Road, London, SW7 5BD, UK.
Mats WEDIN
Affiliation:
Cryptogamic Botany, Swedish Museum of Natural History, P.O. Box 50007, SE-104 05 Stockholm, Sweden. Email: Martin.Westberg@nrm.se
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Abstract

The new genus Silobia M. Westb. & Wedin is proposed for the Acarospora smaragdula group, which is taxonomically and nomenclaturally revised in Sweden. The proposed taxonomy results from our former molecular phylogeny, together with morphological and anatomical investigations and analysis of secondary metabolites. Seven species are recognized in Sweden in this paper: Silobia dilatata sp. nov., S. myochroa sp. nov., S. rhagadiza comb. nov., S. rufescens comb. nov., S. scabrida comb. nov., S. smaragdula comb. nov. and S. tangerina sp. nov. Acarospora alberti, A. amphibola, A. isortoquensis, A. murina and A. undata are recognized as synonyms of S. smaragdula, Acarospora verruciformis as a synonym of S. scabrida and A. scyphulifera as a synonym of S. rhagadiza. The following names are lectotypified: Acarospora amphibola, A. amphibola f. testacea, A. lesdainii, A. lesdainii var. subochracea, A. murina, A. scyphulifera f. subdiscreta, Endocarpon smaragdulum, Lecanora rhagadiza and Sagedia rufescens. Acarospora scyphulifera is neotypified. Acarospora fusca is excluded from the Swedish checklist as the specimen was found to belong to S. rufescens. A key to the species is presented.

Keywords

AcarosporaceaeAcarosporomycetidaelichenized fungilichensnomenclaturetaxonomy
Type
Research Article
Information
The Lichenologist , Volume 43 , Issue 1 , January 2011 , pp. 7 - 25
Copyright
Copyright © British Lichen Society 2010

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