Table 1 Subspecies of Rhododendron arboreum
From: Bioactive compounds, health benefits and utilization of Rhododendron: a comprehensive review
| Subspecies | Characteristics and distribution |
|---|---|
| Rhododendron arboreum spp. Arboreum | Red flower, found in Western Himalayas |
| Rhododendron arboreum spp. Cinnamomeum | White, pink or red flower, found in Central Himachal |
| Rhododendron arboreum spp. Delavayii | Red flower, found in Eastern Himalayas |
| Rhododendron arboreum spp. Nilagiricum | Red flowers, found in Nilgiri |
| Rhododendron arboreum spp. Zeylancium | Orange red flowers, found in Sri Lanka |