| TaxonId | Name | Volume | Year | ||
| 200016542 | Rhododendron ririei | 大钟杜鹃 | Vol.14 | 2005 | |
| 200016543 | Rhododendron rivulare | 溪畔杜鹃 | Vol.14 | 2005 | |
| 242445344 | Rhododendron rivulare | Vol.14 | 2005 | ||
| 242344399 | Rhododendron rockii | Vol.14 | 2005 | ||
| 242344400 | Rhododendron roseatum | 红晕杜鹃 | Vol.14 | 2005 | |
| 242344401 | Rhododendron roseotinctum | Vol.14 | 2005 | ||
| 250060947 | Rhododendron rosmarinifolium | Vol.14 | 2005 | ||
| 242344402 | Rhododendron rosthornii | Vol.14 | 2005 | ||
| 242344403 | Rhododendron rothschildii | 宽柄杜鹃 | Vol.14 | 2005 | |
| 242344404 | Rhododendron rotundifolium | Vol.14 | 2005 | ||
| 200016544 | Rhododendron roxieanum | 卷叶杜鹃 | Vol.14 | 2005 | |
| 242344405 | Rhododendron roxieanum var. cucullatum | 兜尖卷叶杜鹃 | Vol.14 | 2005 | |
| 242344406 | Rhododendron roxieanum var. globigerum | Vol.14 | 2005 | ||
| 242344407 | Rhododendron roxieanum var. oreonastes | 线形卷叶杜鹃 | Vol.14 | 2005 | |
| 250059889 | Rhododendron roxieanum var. recurvum | Vol.14 | 2005 |
