: phylogeny and species diversity in China.

is a small genus belonging to the family Cortinariaceae, distinguished by its distinctive combination of small basidiospores and presence of both cheilo- and pleurocystidia, a combination that is rarely found in other genera within the Cortinariaceae. To date, this genus consists of only two subgenera and includes seven recognized species. Previously, only a single specimen of was reported from China. Based on the analysis of 17 newly collected specimens, supported by morphological evidence and two-locus phylogenetic inference, five species, namely, , and , were recognized. Among them, the former three species are new to science, whereas the last one is new to China. This study provides comprehensive taxonomic descriptions and a detailed identification key to the species discovered in China.