The Collaborative International Dictionary of English v.0.48:

Ixia \Ix"i*a\, n. [NL., fr. Gr. ? birdlime. So called because of
   the viscid nature of some of the species.] (Bot.)
   A South African bulbous plant of the Iris family, remarkable
   for the brilliancy of its flowers.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Ixia
    n 1: a monocotyledonous genus of the family Iridaceae [syn:
         Ixia, genus Ixia]