R. retusum var trichostylum
Species
| Subgenus | Rhododendron |
| Section | Discovireya |
| Subsection | |
| First Described | 1960 (Sleumer) |
| Origin | Indonesia, N. Sumatra 1350-2700 meter |
| Habitat | terrestrial |
| 10 Year Height | ? |
| Bloom Time | ? |
| Flower | ? |
| Predominant Colour | red |
| Leaves | ? |
| Winter Foliage | evergreen |
| Hardiness | ? |