| Taxon | Collector | Location | Type Status | Barcode | |
|---|---|---|---|---|---|
| Rhododendron impeditum Balf.f. & W.W.Sm. | B. F. Palser s.n. 19 Apr 1967 - 26 May 1967 | United States of America. Pennsylvania. Philadelphia Co. Philadelphia. Morris Arboretum. | |||
| Rhododendron impeditum Balf.f. & W.W.Sm. | 04386241 |  | |||
| Rhododendron impeditum Balf.f. & W.W.Sm. | 4386242 |  | |||
| Rhododendron impeditum Balf.f. & W.W.Sm. | 4386243 |  | |||
| Rhododendron impeditum Balf.f. & W.W.Sm. | 4386244 |  | |||
| Rhododendron impeditum Balf.f. & W.W.Sm. | 4386245 |  | |||
| Rhododendron impeditum Balf.f. & W.W.Sm. | 4386246 |  | |||
| Rhododendron impeditum Balf.f. & W.W.Sm. | 4386247 |  | |||
| Rhododendron impeditum Balf.f. & W.W.Sm. | 4386248 |  | |||
| Rhododendron impeditum Balf.f. & W.W.Sm. | 4386249 |  | |||
| Rhododendron impeditum Balf.f. & W.W.Sm. x R. nivale subsp. boreale Philipson & M.N.Philipson | 04394442 |  |
