The Collaborative International Dictionary of English v.0.48:

Oleandra \Oleandra\ prop. n.
   A genus of tropical epiphytic or terrestrial ferns; also
   classed as the family Polypodiaceae.

   Syn: genus Oleandra.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Oleandra
    n 1: or family Polypodiaceae: tropical epiphytic or terrestrial
         ferns [syn: Oleandra, genus Oleandra]