Source : Webster's Revised Unabridged Dictionary (1913)

Mallee \Mal"lee\, n. [Native name.]
   1. (Bot.) A dwarf Australian eucalypt with a number of thin
      stems springing from a thickened stock. The most common
      species are {Eucalyptus dumosa} and {E. Gracilis}.

   2. Scrub or thicket formed by the mallee. [Australia]

Source : WordNet®

mallee
     n : any of several low-growing Australian eucalypts