中文摘要：

通过对采自贵州省各区、县及馆藏瘤冠苔科Aytoniaceae植物标本的鉴定，贵州瘤冠苔科植物有5属13种，其中侧托花萼苔Asterella mussuriensis（Kash Verd．）Verb．为贵州新记录种。对贵州瘤冠苔科植物进行区系分析表明，5种区系成分表现出明显的温带属性特征。

英文摘要：

Members of Aytoniaceae distribute widely, most of them are lithophytic. Based identifying of specimens from collected by the authors,There are 5 genera and 13 species in the family in Guizhou Province, among which Asterella mussuriertsis （Mashyap） Verb. is a new record from Guizhou. Floristie analysis on Aytoniaceae indicates that 5 floral elements are of typically temperate characteristics.