Mycoacia angustata sp. nov. (Basidiomycota, Meruliaceae), the first Chinese hydnoid species

A new hydnoid basidiomycete, Mycoacia angustata sp. nov., is described and illustrated from the tropical and subtropical forest of Hainan and Hubei Province, southern China. It is the first new Mycoacia species described from China. The new species is characterized by ceraceous basidiocarps, an odontioid to hydnoid hymenophore with buff to cinnamon-buff surface, a monomitic hyphal system, and allantoid narrow hyaline basidiospores. Relationships between the new and closely related species are discussed.