| Therorhodion camtschaticum (Pall.) Small | Rhododendron camtschaticum Pall. |
| Therorhodion camtschaticum pumilum (E.A.Busch) T.Yamaz. | Rhododendron glandulosum (Standl. ex Small) Millais |
| Therorhodion glandulosum Standl. ex Small, N. Amer. Fl. 29(1): 45 (1914) | Rhododendron glandulosum (Standl. ex Small) Millais |
| Therorhodion redowskianum (Maxim.) Hutch. | Rhododendron redowskianum Maxim. |