Hyphodontia mollissima sp. nov. (Schizoporaceae, Hymenochaetales) from Hainan, southern China

Hyphodontia mollissima is described from Hainan Province, southern China, as a new species. This species is characterized by resupinate, soft corky basidiocarps, poroid hymenophores, a pseudodimitic hyphal system with clamped generative hyphae, presence of both bladder-like and apically encrusted cystidia, and broadly ellipsoid, colorless, thin-walled, smooth basidiospores. Morphologically, H. mollissima except for poroid hymenophores, fits the concept of Palifer. A potential member of Palifer, Hyphodontia erikssonii, resembles H. mollissima by similar two kinds of cystidia and also similar shape and size of basidiospores, but distinctly differs from the latter by having non-poroid hymenophores and a monomitic hyphal system.