tree heath

Short definition from Wiktionary

Noun

1. 1
   The flowering plant Erica arborea, native to east Africa and the Mediterranean.
2. 2
   Other plants of genus Erica of similar habit
3. 3
   Other plants of genus Erica of similar habit: Erica scoparia (green heath, besom heath, broom heath)
4. 4
   Similar plants of other genera in family Ericaceae,: especially Trochocarpa laurina of Australia and New Zealand.
5. 5
   Similar plants of other genera in family Ericaceae,: Dracophyllum arboreum (Chatham tree heath)
6. 6
   Ecological domains characterized by large numbers of such species of ericaceous plants.