The Collaborative International Dictionary of English v.0.48:

Phaseolus \Pha*se"o*lus\, prop. n. [L.] (Bot.)
   A genus of leguminous plants, including the Lima bean, the
   kidney bean, the scarlet runner, etc. See Bean.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Phaseolus
    n 1: herbs of warm regions including most American beans [syn:
         Phaseolus, genus Phaseolus]