The changeability within species of some species of the genus buttercup (Ranunculus L., Ranunculaceae juss.)

The changeability within species of R. polyanthemos L. and R. auricomus L. s.str. has been studied. Both species are characterised by the considerable polymorphism. The less changeable is the diameter of the flower, the length of the rooted leaves within both species. Probably the generative structures are characterised by the lower degree of changeability then vegetative ones.