A monotypic genus Donkioporiella is newly introduced for a new species D. mellea. Donkioporiella is characterized by perennial, resupinate and woody basidiocarps, trimitic hyphal system with clamped generative hyphae, and broadly ellipsoid, pale yellowish to yellow, thick-walled, smooth, cyanophilous basidiospores. Morphologically, Donkioporia resembles Donkioporiella, but differs in its thin-walled and acyanophilous basidiospores. Donkioporia is composed of two rare species, viz. D. albidofusca and D. expansa; both species differ from Donkioporiella mellea in their larger pores and narrower basidiospores. The phylogenies inferred from nLSU and ITS datasets support that Donkioporiella mellea fell into the core clade of Polyporales and represented a distinct lineage. This lineage was most related with Donkioporia, but the weak statistical supports suggested it as a separate genus from Donkioporia.
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Vol. 37 • No. 4