Clematis pseudotubulosa (Ranunculaceae), a new species from Korea

Clematis pseudotubulosa (Ranunculaceae), a new species from Gyeonggi-do in the Republic of Korea, is described and illustrated. The morphologically similar to C. takedana but differs its leaves, which are always ternate with shallowly lobed leaflets (vs. 1-pinnate deeply three five leaflets), oblong-shaped flower buds ovoid), larger flowers smaller flowers), pantoporate pollen tricolpate). A detailed description, geographical distribution, an identification key for all that occur Korea also provided.