The Collaborative International Dictionary of English v.0.48:

Eranthis \Eranthis\ prop. n.
   A genus of plants of the buttercup family including the
   winter aconite, Eranthis hyemalis.

   Syn: genus Eranthis.
        [WordNet 1.5 +PJC]

WordNet (r) 3.0 (2006):

Eranthis
    n 1: winter aconite [syn: Eranthis, genus Eranthis]