Hispidaedalea gen. nov and Griseoporia taiwanense sp nov (Gloeophyllales, Basidiomycota) based on morphological and molecular characters

Previous studies have shown that Gloeophyllum s.l. is polyphyletic. We analyzed the combined ITS and nLSU rDNA sequences of most Gloeophyllum s.l. species and other taxa of Gloeophyllales retrieved from open databases. The Gloeophyllum s.s. clade included G. sepiarium, G. abietinum, G. striatum, and G. trabeum. Gloeophyllum imponens that is characterized by a strigose upper surface of basidiocarps and distinctly daedaleoid to lamellate hymenophore formed a single clade, and thus a new genus Hispidaedalea is erected to accommodate it. The genera Griseoporia and Osmoporus are supported. The new species Griseoporia taiwanense is described and illustrated, and the new combination Osmoporus mexicanus is proposed. An identification key to the four genera of Gloeophyllum s.l. is provided.