Chiang Mai Journal of Science

     As part of our effort to study wild edible mushrooms from central Mexico. We collected two specimens of Cystodermella. Cystodermella mazahuensis is described as a new species from Mexico. This species has biocultural importance as food for the Mazahua people of the State of Mexico located in Central Mexico. Cystodermella mazahuensis differs from other related species by its small cheilocystidia (17–30 × 4–5 μm) and molecular phylogenetic analysis. This is the fourth edible species known in the genus Cystodermella along with C. cinnabarina, C. granulosa, and C. japonicum. Comprehensive descriptions, illustrations and molecular phylogeny of the nrITS region are provided.