| Name | Rhododendron protistum I. B. Balfour & Forrest |
| Authorship | I. B. Balfour & Forrest |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Rhododendron Linnaeus |
| Contains | Rhododendron protistum var. giganteum (Tagg) D. F. Chamberlain |
| Holdings | 4 Specimens held in the Harvard University Herbaria identified as Rhododendron protistum I. B. Balfour & Forrest |
| Identification made in | [no date] (3), 2016 (1) |