The Collaborative International Dictionary of English v.0.48:

Chamaecytisus \Chamaecytisus\ n.
   a genus of small late-flowering trees or subshrubs having
   yellow to red flowers and leathery or woody pods; -- often
   used especially for those formerly included in genus
   Cytisus.

   Syn: genus Chamaecytisus.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Chamaecytisus
    n 1: small late-flowering trees or subshrubs having yellow to
         red flowers and leathery or woody pods; often especially
         formerly included in genus Cytisus [syn: Chamaecytisus,
         genus Chamaecytisus]