Arrhenia nivea is a new bryophilous species of from valley in southwestern China'a subtropical monsoon humid climate zone.The characterized by pure white basidiomata with an irregularly discoid to cupulate 1.5-4.5 mm diameter pileus, reduced hymenium, nonamyloid basidiospores, lack cystidia, the presence clamps, and no incrusted pigment pileipellic hyphae. Phylogenetic analysis using ITS sequen...