To clarify the taxonomy of Clematis of Ranunculaceae, herbarium specimens collected from South Korea past forty years were examined on the basis of leaf, flower and fruit morphology, The qualitative and quantitative characters showed that eleven taxa could be recognized. The current study rejected several taxa, such as C. heracleifolia var. davidiana Hemsl, C. chiisanensis Nakai, C. nobilis Nakai, C. subtriternata Nakai. On the other hand C. fusca var. coreana Nakai justified varietal status as an endemic plant to Korea. Also, a plausible suggestion was that C. ochotensis, be recognized under a variety of European taxa, i.e., C. alpina(L.) Mill. var. ochotensis (Pall.) S. Wats. Results from this current study showed that C. fusca var. coreana Nakai, C. brachyura Maxim, and C. trichotoma Nakai justified endemic plants to Korea..
