gen. nov., A Revision of Generic Delimitation in ().

is a fungal order with highly diverse morphological traits of basidiomes, which partially leads to a poor understanding of its taxonomic system at the generic level. To identify our recently collected specimens of to a species level, we perform a comprehensive phylogenetic analysis of the generic relationships in . In association with morphological characteristics, a new genus belonging to is erected with two new species, namely, and . Moreover, separated from the generic type and and recently inaccurately described as members of are recovered in the clade of . These three species are thus transferred to this new genus. One collection of also falls in the clade of , whereas another collection of this species is separated far from and . Since we have no collection to confirm the species identity of , its generic position is uncertain. The main taxonomic morphological differences among and related corticioid genera in are summarized. A key to all the five accepted species of is provided. As two unnamed lineages exist in besides the abovementioned five species, it is assumed that more new species will be revealed from this genus under its current circumscription.