Ranunculus bulbosus

from WordNet (r) 3.0 (2006)

Ranunculus bulbosus
    n 1: perennial Old World buttercup with golden to sulphur yellow
         flowers in late spring to early summer; naturalized in
         North America [syn: {common buttercup}, {Ranunculus
         bulbosus}]

from The Collaborative International Dictionary of English v.0.48

Cuckoobud \Cuck"oo*bud"\ (k??k"??-b?d`), n. (Bot.)
   A species of {Ranunculus} ({Ranunculus bulbosus}); -- called
   also {butterflower}, {buttercup}, {kingcup}, {goldcup}.
   --Shak.
   [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Buttercup \But"ter*cup`\, n. (Bot.)
   A plant of the genus {Ranunculus}, or crowfoot, particularly
   {Ranunculus bulbosus}, with bright yellow flowers; -- called
   also {butterflower}, {golden cup}, and {kingcup}. It is the
   {cuckoobud} of Shakespeare.
   [1913 Webster]

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