Poriella subacida Gen. & Comb Nov. for Perenniporia subacida (Peck) Donk

Poriella subacida gen. & comb. nov., previously known as Perenniporia subacida, which causes white rot, has been documented in temperate and tropical forests. Specimens from Asia, North America, Europe were examined, including the type specimen of Polylorus subacidus. Sequences ITS1-5.8S-ITS2 region, 28S rDNA, mitochondrial rDNA small subunit (mtSSU), gene encoding translation elongation factor 1-α (EF1) generated. In multigene phylogenies (maximum parsimony, maximum likelihood, Bayesian inferences), “Perenniporia subacida” formed a well-supported lineage, distinct core “Perenniporia” clade (type species: “P. medulla-panis”), sister to “Yuchengia narymica” lineage. We therefore conclude that should be placed new genus “Poriella”gen. nov. Morphologically, “Poriella” is characterized by di- trimitic hyphal system, non-truncate basidiospores, strongly dextrinoid, cyanophilic skeletal hyphae.