Dentipellicula hainanensis (Hericiaceae, Agaricomycetes) and Phylloporia rigida (Hymenochaetaceae, Agaricomycetes), two new species of wood-inhabiting fungi from Hainan Province, South China

Wood-rotting fungi, which are essential constituents of forest ecosystems, act as critical mediators of organic matter decomposition and material recycling within such systems. During the investigation of wood-inhabiting fungi in Hainan, China, a large number of specimens were collected. Two new species are described, based on phylogeny, morphology, host and geographic distribution. <i>Dentipellicula hainanensis</i> <b>sp. nov</b>. is characterised by resupinate, soft corky and tomentose basidiomata, uneven pileal surface and ellipsoid basidiospores (2.8-)3-4.7(-5.2) × 3.2-4.2(-4.4) µm. <i>Phylloporia rigida</i> <b>sp. nov</b>. is characterised by tough, fawn to reddish-brown basidiomata and ellipsoid basidiospores 2.3-4.5 × 2.2-3.8 µm. Detailed illustrations and descriptions of the novel species are provided. Phylogenetic analyses inferred from the combined ITS + nLSU datasets confirmed that the two new species are distinct within <i>Dentipellicula</i> and <i>Phylloporia</i>.