The Combination of Morphological and Phylogenetic Evidence Reveals Four New Species and New Distribution.

The genus plays a significant role in ecological systems, with certain species holding potential as food or medicinal resources. However, the species diversity of in China remains unclear. In recent years, more than one thousand specimens have been collected across China. Thus, through the integration of ecological evidence, detailed morphological studies, and phylogenetic analysis using a multiloci dataset of ITS + nLSU + , four new species-, , , and -have been differentiated from known species. has been newly documented from Jiangxi Province, China. Detailed descriptions and vivid illustrations have been provided based on the newly collected specimens, along with comparisons to closely related species. Additionally, a key to the reported species of s.l. from East China has been included.