Circumscription of the genus Lepra, a recently resurrected genus to accommodate the "Variolaria"-group of Pertusaria sensu lato (Pertusariales, Ascomycota)

Xinli Wei , Imke Schmitt , Brendan Hodkinson , Adam Flakus , Martin Kukwa , Pradeep Divakar , Paul Kirika , Jürgen Otte , Anjuli Meiser , H. Lumbsch Lumbsch

Abstract

Pertusarialean lichens include more than 300 species belonging to several independent phylogenetic lineages. Only some of these phylogenetic clades have been comprehensively sampled for molecular data, and formally described as genera. Here we present a taxonomic treatment of a group of pertusarialean lichens formerly known as “Pertusaria amara-group”, “Monomurata-group”, or “Variolaria-group”, which includes widespread and well-known taxa such as P. amara, P. albescens, or P. ophthalmiza. We generated a 6-locus data set with 79 OTUs representing 75 species. The distinction of the Variolaria clade is supported and consequently, the resurrection of the genus Lepra is followed. Thirty-five new combinations into Lepra are proposed and the new species Lepra austropacifica is described from mangroves in the South Pacific. Lepra is circumscribed to include species with disciform ascomata, a weakly to non-amyloid hymenial gel, strongly amyloid asci without clear apical amyloid structures, containing 1 or 2, single-layered, thin-walled ascospores. Chlorinated xanthones are not present, but thamnolic and picrolichenic acids occur frequently, as well as orcinol depsides. Seventy-one species are accepted in the genus. Although the distinction of the genus from Pertusaria is strongly supported, the relationships of Lepra remain unresolved and the genus is tentatively placed in Pertusariales incertae sedis.
Author Xinli Wei
Xinli Wei,,
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, Imke Schmitt
Imke Schmitt,,
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, Brendan Hodkinson
Brendan Hodkinson,,
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, Adam Flakus
Adam Flakus,,
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, Martin Kukwa KTRiOP
Martin Kukwa,,
- Department of Plant Taxonomy and Nature Conservation
, Pradeep Divakar
Pradeep Divakar,,
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, Paul Kirika
Paul Kirika,,
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, Jürgen Otte
Jürgen Otte,,
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, Anjuli Meiser
Anjuli Meiser,,
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, H. Lumbsch Lumbsch
H. Lumbsch Lumbsch,,
-
Other language title versions
Journal seriesPlos One, ISSN 1932-6203
Issue year2017
Vol12
No7
Pages1-14
Publication size in sheets0.65
Keywords in Englishlichens, lichenized fungi, Lepra, Pertusaria, Ochrolechia, phylogeny, diverity
DOIDOI:10.1371/journal.pone.0180284
URL http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0180284&type=printable
Languageen angielski
LicenseJournal (articles only); published final; Uznanie Autorstwa (CC-BY); with publication
Score (nominal)40
ScoreMinisterial score = 35.0, 20-12-2017, ArticleFromJournal
Ministerial score (2013-2016) = 40.0, 20-12-2017, ArticleFromJournal
Publication indicators WoS Impact Factor: 2016 = 2.806 (2) - 2016=3.394 (5)
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