The Collaborative International Dictionary of English v.0.48:

honeyflower \honeyflower\, honey flower \honey flower\n.
   1. (Bot.) An erect bushy shrub (Lambertia formosa) of
      eastern Australia having terminal clusters of red flowers
      yielding much nectar.

   Syn: mountain devil, Lambertia formosa.
        [WordNet 1.5]

   2. (Bot.) The Australian shrub (Protea mellifera) whose
      flowers yield honey copiously.

   Syn: Protea mellifera.
        [WordNet 1.5]

   3. (Bot.), An evergreen shrub of the genus Melianthus, a
      native of the Cape of Good Hope. The flowers yield much
      honey.
      [1913 Webster]

WordNet (r) 3.0 (2006):

honey-flower
    n 1: erect bushy shrub of eastern Australia having terminal
         clusters of red flowers yielding much nectar [syn:
         honeyflower, honey-flower, mountain devil, Lambertia
         formosa]
    2: Australian shrub whose flowers yield honey copiously [syn:
       honeyflower, honey-flower, Protea mellifera]