Two New Species of Crepidotus (Crepidotaceae, Agaricales) from China

Crepidotus represents a group of broadly distributed saprophytic fungi distinguished by remarkable species diversity. Herein, two undescribed species from China are introduced, supported by integrative evidence such as molecular phylogenetics, morphological features, host associations, and biogeographic distribution. Crepidotus hainanensis C.G. Song & Z.F. Jia, sp. nov., is characterized by its tomentose, plano-convex, white to pale mouse grey or straw yellow pileus, clamped hyphae, and hyaline, ellipsoid, thin-walled, smooth basidiospores. Phylogenetically, it forms an isolated terminal lineage without an immediate sister species. Crepidotus subasiaticus C.G. Song & Z.F. Jia, sp. nov., is characterized by its stipitate basidiomata, pinkish buff, cinnamon buff, clay-pink to yellowish-brown pileus, clamped hyphae, and olivaceous buff to yellowish-brown, ellipsoid, thick-walled, finely verrucose basidiospores, and phylogenetically it is closely allied to C. asiaticus. Morphological illustrations and taxonomic descriptions of the new proposed species are provided.