The Collaborative International Dictionary of English v.0.48:

Olearia \Olearia\ prop. n.
   A large genus of Australian evergreen shrubs or small trees
   with large daisylike flowers.

   Syn: genus Olearia.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Olearia
    n 1: large genus of Australian evergreen shrubs or small trees
         with large daisylike flowers [syn: Olearia, genus
         Olearia]