In this paper descriptions of three new Laccaria species from Southwest China (Yunnan) are reported. Macromorphological, micromorphological, and molecular data have been studied to describe the new species and delineate them within the genus Laccaria. The first species Laccaria fulvogrisea is characterized by a grey to brownish coloured fruiting body and large echinulate spores. Laccaria aurantia is characterized by the deeply orange colour and globose balloon-like spores with a fine echinulate ornament. The third species Laccaria yunnanensis has large barrel-shaped pleurocystidia and a brownish to flesh-coloured fruiting body. All three species have 4-spored basidia and were found near or within Quercus and Lithocarpus mixed broad leaved forests at an altitude of above 2,000 m.
National Natural Science Foundation of China [U1032602, 30725048, 21102152]
; National Basic Research Program of China [2013CB127505]
; National New Drug Innovation Major Project of China [2011ZX09307-002-02]
; Foundation of Chinese Academy of Sciences (Hundred Talents Program) [XDA09030301-4]
; Natural Science Foundation of Yunnan Province [2012GA003, 2011FZ206]