The Collaborative International Dictionary of English v.0.48:

Acocanthera \Acocanthera\ n.
   same as Akocanthera.

   Syn: Akocanthera, genus Acocanthera, genus Acokanthera.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Acocanthera
    n 1: small genus of trees and shrubs containing strongly toxic
         cardiac glycosides; Arabia to Africa [syn: Acocanthera,
         genus Acocanthera, Acokanthera, genus Acokanthera]