found: Work cat: Random House Web. unabr. dict., c1997(buttercup: any of numerous plants of the genus Ranunculus, having glossy yellow flowers and deeply cut leaves)
found: ITIS, Oct. 7, 2001(Ranunculus. Vernacular names: buttercup, buttercup spp.)
found: Plants database, via WWW, Oct. 7, 2001(Ranunculus, buttercup; most species of Ranunculus have buttercup in common name, but some species have other names, e.g. crowfoot, turnip, spearwort, blisterwort)
found: Mabberley, D.J. The plant-book, c1997(Ranunculus. Buttercups, crowfoot, paigle)
found: The Amer. Heritage dict. of the Engl. lang., c2000(buttercup: any of numerous herbs of the genus Ranunculus, native chiefly to temperate and cold regions and having acrid juice, often toothed or lobed leaves, and usually yellow or white flowers with numerous pistils)