R. sororium
Species
| Subgenus | Rhododendron |
| Section | Pseudovireya |
| Subsection | |
| First Described | 1958 ( Sleumer ) |
| Origin | Vietnam Lao-Kay 1400-1700 meter |
| Epiphytic/Terrestrial | terrestrial |
| Bloom Time | ? |
| Flower | ? |
| Flower Color | yellow |
| Fragrance | ? |
| Leaves | ? |
| Leaf persistence | Evergreen |
| Minimum Hardiness | ? |