| Name | Rhododendron hyacinthosmum Sleumer |
| Authorship | Sleumer |
| Rank | Species |
| Placed in | Rhododendron Linnaeus |
| Citation | 1973 Blumea 21(2): 363 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Rhododendron hyacinthosmum Sleumer |
| Identification made in | [no date] (1) |