Two new species of Megasporoporia (Polyporales, Basidiomycota) from tropical China

Two new polypores, Megasporoporia ellipsoidea sp. nov. and M. violacea sp. nov., found from tropical forests in Hainan province of southern China, are described and illustrated. Megasporoporia ellipsoidea differs from other species in the genus by its cream to orange yellow pore surface, larger pores (1-1.5 per mm), barrel to calabash-shaped gloeocystidia, and ellipsoid basidiospores. Megasporoporia violacea is distinguished in the genus by having greyish violet to pale fawn brown pore surface, smaller pores (5-7 per mm), abundant dendrohyphidia, and cylindrical to oblong-ellipsoid basidiospores, and by lacking of hyphal pegs. All identification key to Megasporoporia species is provided.