| Name | Rhododendron sidereum I. B. Balfour |
| Authorship | I. B. Balfour |
| Rank | Species |
| Placed in | Rhododendron Linnaeus |
| Citation | 1920 Notes Roy. Bot. Gard. Edinburgh 12: 162 |
| Holdings | 6 Specimens held in the Harvard University Herbaria identified as Rhododendron sidereum I. B. Balfour |
| Identification made in | 2006 (4), 2009 (2) |