Physisporinus yunnanensis sp. nov. (Polyporales, Basidiomycota) from Southern China

A wood-inhabiting fungal species, Physisporinus yunnanensis is proposed based on a combination of morphological features and molecular evidence. Physisporinus yunnanensis is characterized by annual, resupinate, bone-hard basidiomata with an olivaceous to black pore surface, a monomitic hyphal system, presence of hyphoid cystidia at dissepiment edge and subglobose, smooth basidiospores measuring as 4-5.5 x 3.5-5 mu m, and causing a white rot. The phylogenetic analyses based on molecular data of ITS+nLSU sequences showed that P. yunnanensis is sister to P. furcatus with high support (100% BS, 100% BP, 1.00 BPP). Both morphological characteristics and molecular phylogenetic analyses confirmed the placement of the new species in Physisporinus.

Automated summary

A new wood-inhabiting fungal species, Physisporinus yunnanensis, is proposed based on morphological features and molecular evidence. This species is characterized by annual, resupinate, bone-hard basidiomata with an olivaceous to black pore surface, a monomitic hyphal system, presence of hyphoid cystidia at dissepiment edge, and subglobose, smooth basidiospores measuring as 4-5.5 x 3.5-5 μm, causing white rot. Phylogenetic analyses confirm the placement of the new species in the Physisporinus genus, with P. yunnanensis being sister to P. furcatus.