Morphological characters and molecular data reveal two new species of Postia (Basidiomycota) from China

Two new species of Postia are described from China based on morphological characters and molecular data. Postia gloeopora sp. nov. is characterized by pileate and white flabelliform basidiomata, glue pores when dry, gelatinous hyphae at the dissepimental edge, abundant oily substances in context and trama, and ellipsoid basidiospores (4-4.5x22.5 mu m). Postia ochraceoalba sp. nov. is characterized by imbricate basidiomata, ochraceous pileal surface with concentric zones, white pore surface, small angular pores (6-7 per mm) with dentate dissepiments, and allantoid basidiospores (4-4.5x1-1.5 mu m). Phylogenetic analysis based on the internal transcribed spacer and nuclear large subunit ribosomal RNA gene regions confirmed the affinity of the new species in Postia and indicated their relationships with other species in the genus.