The Collaborative International Dictionary of English v.0.48:

Acroclinium \Acroclinium\ n.
   1. 1 a genus of herbs and shrubs of Australia and Southern
      Africa, with an everlasting flower; most species are
      usually placed in genus Helipterum.

   Syn: genus Acroclinium
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Acroclinium
    n 1: genus of herbs and shrubs of Australia and South Africa:
         everlasting flower; most species usually placed in genus
         Helipterum [syn: Acroclinium, genus Acroclinium]