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

The changeability within species of R. acris L. and R. subborealis Tzvel. has been studied. Comparison their variability with other species of the genus has been realized. The less changeable is the diameter of the flower, the length of the fhiit, the degree of linearity of the rooted leaves within all studied spesies.