Abstract: The epidermal surfaces of seeds from 13 species and 1 variety of the genus Gynostemmma were examined by Scanning Electricity Microscope(SEM). The results showed the microstuctural features of seeds surfaces can be divided into smooth and ornamentation type. And most species are ornamentation type,these features and size of epidermal cell are quite distinct in different species.It has high taxonomic significance.

Key words: Gynostemma, Seed, Microstuctural features, Taxonomic significance