The Collaborative International Dictionary of English v.0.48:

Cynodon \Cynodon\ n.
   a genus of creeping perennial grasses of tropical and
   southern Africa.

   Syn: genus Cynodon.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Cynodon
    n 1: creeping perennial grasses of tropical and southern Africa
         [syn: Cynodon, genus Cynodon]