Yuchengia, a new polypore genus segregated from Perenniporia (Polyporales) based on morphological and molecular evidence

Yuchengia gen. nov. is proposed to accommodate Perenniporia narymica. It represents a monophyletic lineage within the core polyporoid clade based on sequences of the rDNA ITS and nLSU regions, and it is distinct from Perenniporia s.s. Yuchengia shares some characters with Perenniporia, both having thick-walled and cyanophilous basidiospores, but differs by having acyanophilous and amyloid skeletal hyphae dissolving in KOH, and non-dextrinoid basidiospores.