A new edible species of Gomphus (Gomphaceae) from southwestern China

Gomphus matijun, a new edible species, is described from southwestern China based on phylogenetic and morphological evidence. Phy-logenetic analyses of the nrLSU and ITS datasets indicated that G. matijun is related to G. crassipes and G. ludovicianus with weak statis-tical support in maximum likelihood but strong statistical support in Bayesian analyses. Gomphus matijun is characterized by its gray-blue to blue or blue-purple pileus with a round or irregular outline, relatively smaller basidiospores [9-11(-13) x 6-7(-8) mu m], mostly 2-spored basidia, and occurs in subtropical fagaceous forests. A key to the known species of Gomphus is provided.