The Collaborative International Dictionary of English v.0.48:

Ramous \Ra"mous\ (r[=a]"m[u^]s), a.
   Ramose.
   [1913 Webster]

WordNet (r) 3.0 (2006):

ramous
    adj 1: having branches [syn: branched, branching, ramose,
           ramous, ramate]