The aim of this study was to investigate the diversity of edible mushrooms in the community forest of Na Si Nuan sub-district. Twenty-seven species of mushrooms were found, and 24 were edible. Three species were not recorded for eating, and 1 of them was similar to Scleroderma. Mushrooms were identified by their morphology and internal transcribed spacer (ITS) region of ribosomal DNA and then categorized into 13 families. Eight and seven species of mushrooms were placed in Russulaceae and Boletaceae, respectively. Two species of mushrooms were categorized in the families Tricholomataceae and Clavariaceae. Only 1 species was found in each family of Pluteaceae, Amanitaceae, Agaricaceae, Schizophyllaceae, Auriculaceae, Hymeogasteraceae, Diplocystaceae, and Sclerodermataceae. The internal transcribed spacer region of the rDNA sequences of all mushrooms was homologous with the GenBank database, with similarities between 59-100%. Only 9 species from the morphology studies were given the same scientific name as that in the sequence databases: RDEN, REME, AHEM, TCLY, TALB, CMIS, CTA, PHY, and ALPO. The others were the same at the genus level except for SCHI and some Boletus spp. The molecular phylogenetic analysis of 27 mushroom sequences showed high genetics relatedness with reference strains.
