Carissa bispinosa

from WordNet (r) 3.0 (2006)

Carissa bispinosa
    n 1: South African shrub having forked spines and plumlike
         fruit; frequently used as hedging [syn: {hedge thorn},
         {natal plum}, {Carissa bispinosa}]

from The Collaborative International Dictionary of English v.0.48

Natal plum \Na*tal" plum`\
   1. (Bot.) The drupaceous fruit of two South African shrubs of
      the genus {Carissa} (formerly {Arduina}) ({Carissa
      bispinosa} and {Carissa grandiflora}). It is also called
      {amatungulu}.
      [1913 Webster]

   2. the shrub bearing the {natal plum[1]}; a very large
      closely branched South African shrub ({Carissa
      grandiflora}) of the dogbane family having forked bright
      green spines, white flowers, shiny leaves, and red
      berries.
      [WordNet 1.5 +PJC]