Chiang Mai Journal of Science

During the investigation of Basidiomycetes at Qujing, Yunnan Province, China, some interesting mushroom specimens were collected at the Qujing Normal University premises. Based on their unique morphology, we preliminarily identified them as Agaricus species. Further analyses based on internal transcribed spacer (ITS) region and micro-morphological characteristics confirmed that the collected specimens represent two known species viz. A. andrewii and A. xanthodermulus belonged to Agaricus sections Agaricus and Xanthodermatei, respectively. These two species are reported here as new records to China. Full Descriptions, color plates, and a phylogenetic tree to show the placement of two species are provided.