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Usnea viktoriana (Ascomycota, Parmeliaceae), a new European taxon of the Usnea barbata-dasopoga group, with a key to the shrubby-subpendulous sorediate Usnea species in Europe

Published online by Cambridge University Press:  26 September 2018

Philippe CLERC  and
Volker OTTE
Philippe CLERC
Affiliation:
Conservatoire et Jardin Botaniques de la Ville de Genève, case postale 71, CH-1292Switzerland. Email: philippe.clerc@ville-ge.ch
Volker OTTE
Affiliation:
Senckenberg Museum für Naturkunde Görlitz, PF 300 154, 02806 Görlitz, Germany
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Abstract

Usnea viktoriana P. Clerc & Otte is described as new. It is characterized by the presence of alectorialic acid as major secondary compound mainly present in the aggregated efflorescent soralia with long isidiofibrils. Usnea parafloridana K. Mark, Will-Wolf & Randlane is synonymized with U. praetervisa (Asahina) P. Clerc. Both U. viktoriana and U. praetervisa are supported by molecular analysis. A key to the shrubby-subpendulous sorediate Usnea species in Europe is provided.

Keywords

alectorialic acidlichenphylogeneticssystematicstaxonomyTLC
Type
Articles
Information
The Lichenologist , Volume 50 , Issue 5 , September 2018 , pp. 513 - 527
Copyright
© British Lichen Society, 2018 

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