| Ericaceae | |
Rhododendron arboreum var. album
| Wall. | Pl. Asiat. Rar. 2: 23, pl. 123 | 1830 |
| Ericaceae | |
Rhododendron arboreum var. arboreum
| | | |
| Ericaceae | |
Rhododendron arboreum subsp. campbelliae
| (Hook. f.) Tagg | Sp. Rhodod. 15 | 1930 |
| Ericaceae | |
Rhododendron arboreum subsp. cinnamomeum
| (Wall. ex G. Don) Tagg | Sp. Rhodod. 15 | 1930 |
| Ericaceae | |
Rhododendron arboreum var. cinnamomeum
| (Wall. ex G. Don) Lindl. | Edwards's Bot. Reg. 23: , pl. 1982 | 1837 |
| Ericaceae | ** |
Rhododendron arboreum var. cinnamomeum
| W.K. Hu | Bull. Bot. Res., Harbin 8(3): 59 | 1988 |
| Ericaceae | |
Rhododendron arboreum subsp. delavayi
| (Franch.) D.F. Chamb. | Notes Roy. Bot. Gard. Edinburgh 37(2): 328 | 1979 |
| Ericaceae | |
Rhododendron arboreum var. nilagirica
| C.B. Clarke | Fl. Brit. India 3: 466 | 1882 |
| Ericaceae | |
Rhododendron arboreum subsp. nilagiricum
| Tagg | Sp. Rhodod. | 1977 |
| Ericaceae | |
Rhododendron arboreum var. peramoenum
| (Balf. f. & G. Forrest) D.F. Chamb. | Notes Roy. Bot. Gard. Edinburgh 37(2): 328 | 1979 |
| Ericaceae | |
Rhododendron arboreum var. roseum
| Lindl. | Edwards's Bot. Reg. 15: pl. 1240 | 1829 |
| Ericaceae | * |
Rhododendron arboreum var. roseum
| (Lindl.) W.K. Hu | Bull. Bot. Res., Harbin 8(3): 59 | 1988 |
| Ericaceae | |
Rhododendron arboreum subsp. windsori
| Nutt. | 19(94): 224 | 1937 |