Taxonomic note of Parnassia (Celastraceae) in China II: population surveys reveal that P.guilinensis is conspecific to P.xinganensis .

Based on investigation of populations of Parnassiaguilinensis and P.xinganensis , examination of herbarium specimens (including types), as well as consultation of protologues and distributions, P.guilinensis is hereby reduced to a synonym of P.xinganensis . P.xinganensis is endemic to northeastern Guangxi Province of China and characterized by having elliptic to ovate leaves and staminodes 3-5-branched with globose glands. Field photographs and an updated morphological description of P.xinganensis are provided.