R. sororium
Species
| Subgenus | Rhododendron |
| Section | Pseudovireya |
| Subsection | |
| First Described | 1958 (Sleumer) |
| Origin | Vietnam Lao-Kay 1400-1700 meter |
| Habitat | terrestrial |
| 10 Year Height | ? |
| Bloom Time | ? |
| Flower | ? |
| Predominant Colour | yellow |
| Leaves | ? |
| Winter Foliage | evergreen |
| Hardiness | ? |