Phylogeny and taxonomy of Climacocystis (Polyporales) in China

Jie SONG, Yuan-Yuan CHEN & Bao-Kai CUI

en Cryptogamie, Mycologie 35 (3) - Pages 221-231

Published on 26 September 2014

Climacocystis was a monotypic genus typified by C. borealis. During a continuous survey of poroid basidiomycetes over China, several specimens of a Climacocystis species were collected at high elevations in southwestern China. They deviated from the type species, C. borealis in several microscopic features, including larger and ellipsoid to sub-cilindrical basidiospores (6-8.8 × 3-4.2 m versus 5-6.8 × 3.2-4 m), smooth cystidia (incrusted in C. borealis) and regularly arranged contextual hyphae (interwoven in the type species). Furthermore, phylogenetic inferences based on a combined dataset of ITS, nLSU-rDNA and EF1α regions revealed that our specimens and specimens of C. borealis formed two distinct lineages. We therefore concluded that our chinese collections represent a new species, described below as Climacocystis montana sp. nov. Illustrated descriptions of the two Climacocystis species are provided.

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