Three new species within the genus Entoloma (Basidiomycota, Agaricales) with clamped basidia and a serrulatum-type lamellae edge, and their phylogenetic position
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Three new species of the gеnus Entoloma s.l. are described on the basis of morphological and molecular evidence. Two of them are morphologically and phylogenetically closely related to the European species E. violaceozonatum but differ sufficiently by their geographic distribution: E. bulakhae is from the Russian Far East and E. bidupense from Vietnam. The more distant E. atricolor from Vietnam is remarkable because of the brownish-black color of the basidiomata, blackish lamellae edge near the stem, and observed dimorphism in cheilocystidia. These three species are characterized by the combination of clamped basidia and a serrulatum-type lamellae edge and grouped together within the /Inocephalus–Cyanula clade in sister position to /Inocephalus and /Griseorubida. It is argued that they may possibly constitute a separate section in future, when more data will be available. For this reason, section Violaceozonata is proposed here “ad interim” to acknowledge the current isolated position.
KeywordsEntolomataceae Phylogeny New species Russian Far East Vietnam
The authors are very grateful to the staff of the Kedrovaya Pad and Kon Chu Rang Nature Reserves, Bi Dup-Nui Ba National Park for the organization of our field work and to Dr. Ekaterina Malysheva for the material provided. The research was carried out using equipment of The Core Facility Center “Cell and Molecular Technologies in Plant Science” at the Komarov Botanical Institute RAS (St.-Petersburg, Russia). The financial support for this study was provided in the framework of an institutional research project of the Komarov Botanical Institute RAS (N 01201255602) and Russian Foundation for Basic Research (project N 15-04-04645-a). Alina V. Alexandrova acknowledges financial support from the Russian Science Foundation (project N 14-50-00029).
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