Two new species of (, ) on threatened or near threatened tree species in Japan.

Mycoscience

c Fungus/Mushroom Resource and Research Center, Faculty of Agriculture, Tottori University.

Published: July 2021

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Article Abstract

We describe two new species of based on morphological observations and phylogenetic investigations. Both species were identified as by former mycologists, but both are morphologically distinct from authenticated specimen of . is characterized by perennial basidiomata, a sulcate pileus surface becoming rimose, lack of a distinct crust on the pileus surface, subdimitic hyphal system in the context, and ellipsoid basidiospores. This species is endemic to the Bonin Islands, Japan, and is specific to the host , a red-listed tree species. is characterized by perennial basidiomata, sulcate and velutinous pileus surface, lack of a crust on the pileus surface, dimitic hyphal system in the context, and broadly ellipsoid basidiospores. This species is specific to , and is known only from Mt. Yokogura-yama, in Kochi Prefecture, Japan. and are considered threatened, because of their high host specificity each with a threatened tree species as well as the limited distribution of the former and the extremely small number of "mature individuals" of the latter. The following new combinations were also proposed: , , and .

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10032352PMC
http://dx.doi.org/10.47371/mycosci.2022.04.002DOI Listing

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