The Collaborative International Dictionary of English v.0.48:

Indigofera \In`di*gof"e*ra\, n. [NL., from E. indigo + L. ferre
   to bear.] (Bot.)
   A genus of leguminous plants (family Leguminosae) having
   many species, mostly in tropical countries, several of them
   yielding indigo, esp. Indigofera tinctoria, Indigofera
   suffroticosa, and Indigofera Anil.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Indigofera
    n 1: genus of tropical herbs and shrubs having odd-pinnate
         leaves and spurred flowers in long racemes or spikes [syn:
         Indigofera, genus Indigofera]