| Rhododendron albiflorum Hook. | W. J. Hooker | United States of America. Bor. Am. | isotype | 10319 |  |
| Rhododendron albiflorum Hook. | | | | 2538953 |  |
| Rhododendron albiflorum Hook. | | | | 2538954 |  |
| Rhododendron albiflorum Hook. | | | | 2538970 |  |
| Rhododendron albiflorum Hook. | | | | 2538972 |  |
| Rhododendron albiflorum Hook. | | | | 2538973 |  |
| Rhododendron albiflorum Hook. | | | | 2538974 |  |
| Rhododendron albiflorum Hook. | | | | 2538976 |  |
| Rhododendron albiflorum Hook. | | | | 2538978 |  |
| Rhododendron albiflorum Hook. | | | | 2538979 |  |
| Rhododendron albiflorum Hook. | | | | 2538980 |  |
| Rhododendron albiflorum Hook. | | | | 2538981 |  |
| Rhododendron albiflorum Hook. | | | | 2538982 |  |
| Rhododendron albiflorum Hook. | | | | 2538983 |  |
| Rhododendron albiflorum Hook. | | | | 2538991 |  |
| Rhododendron albiflorum Hook. | | | | 2538997 |  |
| Rhododendron albiflorum Hook. | | | | 2539000 |  |
| Rhododendron albiflorum Hook. | | | | 2539001 |  |
| Rhododendron albiflorum Hook. | F. Tweedy 84 & 349 with Brandegee,
1882 | United States of America. Washington. Cascade Mts., Washington Territory. | | 2539005 |  |
| Rhododendron albiflorum Hook. | | | | 2539017 |  |
| Rhododendron albiflorum Hook. | | | | 2539022 |  |
| Rhododendron albiflorum Hook. | | | | 2539023 |  |
| Rhododendron albiflorum Hook. | | | | 2539025 |  |
| Rhododendron albiflorum Hook. | | | | 2539027 |  |
| Rhododendron albiflorum Hook. | | | | 2539028 |  |
| Rhododendron albiflorum Hook. | | | | 2539030 |  |
| Rhododendron albiflorum Hook. | | | | 2539031 |  |
| Rhododendron albiflorum Hook. | | | | 2539033 |  |
| Rhododendron albiflorum Hook. | | | | 2539035 |  |
| Rhododendron albiflorum Hook. | | | | 2539041 |  |
| Rhododendron albiflorum Hook. | | | | 2539042 |  |
| Rhododendron albiflorum Hook. | W. M. Canby 220
19 Jul 1883 | United States of America. Montana. Lake Co. McDonald's Peak, Mission Range, Rocky Mts. | | 2539046 |  |
| Rhododendron albiflorum Hook. | | | | 2539047 |  |
| Rhododendron albiflorum Hook. | | | | 2539048 |  |
| Rhododendron albiflorum Hook. | | | | 2539049 |  |
| Rhododendron albiflorum Hook. | | | | 2539055 |  |
| Rhododendron albiflorum Hook. | | | | 2539056 |  |
| Rhododendron albiflorum Hook. | | | | 2539057 |  |
| Rhododendron albiflorum Hook. | | | | 2539058 |  |
| Rhododendron albiflorum Hook. | | | | 2539059 |  |
