Journal
MYCOLOGIA
Volume 106, Issue 5, Pages 1015-1026Publisher
TAYLOR & FRANCIS INC
DOI: 10.3852/13-338
Keywords
Allopatric speciation; monophyly; new combinations; Singerocybe umbilicata; synapomorphy
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Funding
- National Basic Research Program of China [2014CB138305]
- Joint Funds of the National Natural Science Foundation of China
- Yunnan provincial government [U1302263]
- Hundred Talents Program of the Chinese Academy of Sciences
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The genus Singerocybe (Tricholomataceae, Agaricales, Basidiomycota) has been the subject of controversy since its proposal in 1988. Its taxonomic foundation, species circumscription and geographical distribution have not yet been examined with molecular sequence data. In this study phylogenetic analyses on this group of fungi were conducted based on collections from Europe, eastern Asia, southern Asia, North America and Australia, with four nuclear markers, ITS, nrLSU, tefl-alpha and rpb2. Molecular phylogenetic analyses, together with morphological observations, strongly support Singerocybe as a monophyletic group and identify the vesicles in the pileal and stipe cuticle as a synapomorphy of this genus. Seven species are recognized in the genus, including one new species and four new combinations. Clitocybe trogioides and Clitocybe trogioides var. odorifera are synonyms of Singerocybe humilis and Singerocybe alboinfundibuliformis respectively. Most of these species are geographically restricted in their distributions. Furthermore our study expands the distribution range of Singerogbe from the North Temperate Zone to Australia (Tasmania) and tropical southern Asia.
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