Two New Species of (, ) with a Key to Worldwide Species.

is a genus of wood-inhabiting fungi consisting of four species so far, including as generic type. Two new species, and , are described and illustrated from China. from southwestern China is characterized by a grandinioid to odontioid hymenophore with numerous small aculei, a dimitic hyphal system with scattered, smooth skeletal hyphae and ellipsoid basidiospores measuring 4.2-5.2 × 3.5-4.5 μm. from the West Tianshan Mountain in northwestern China is distinguished by an odontioid to hydnoid hymenophore, a dimitic hyphal system, and ellipsoid basidiospores measuring 3.7-4.4 × 2.8-3.4 μm. The phylogenies inferred from the data set of nuc rDNA ITS1-5.8S-ITS2 (ITS) and D1-D2 domains of nuc 28S rDNA (28S), and that of ITS, 28S, translation elongation factor (), and RNA polymerase II second largest subunit () supported as a monophyletic genus in the and and as separate lineages within . Multi-rate Poisson Tree Processes, Automatic Barcode Gap Discovery and genetic distance methods based on ITS sequences of also supported and as distinct species. The taxonomic status of that was recently transferred from , is briefly discussed. A key to all six known species of is provided.