Buttercup family (Ranunculaceae)
Perennial with short rhizome and abundant roots. Stem reaches heights of 50 cm maximum, is hollow and hairless. Base often red, branched, prostrate or raised up. Leaves arranged helically, with basal ones on long stalks of up to 10 cm. Stem leaves have shortened stalks, and may even be sessile. Leafblade dark green, shiny, deeply cleft, with crinkled margins. Flowers radial up to 5 cm in diameter. Perianth with five segments, yellow on the inside, greenish externally. Flowers Mar.-May.
Grows on moist, fertile soils, in alder forest and on wet meadows. POISONOUS.
Descriptions devised by the team at the Independent Department of Forest Botany, Warsaw University of Life Sciences, i.e. L. Witkowska-Żuk, K. Marciszewska, W. Ciurzycki, A. Obidziński and P. Zaniewski