R. rex ssp gratum
Species
| Subgenus | Hymenanthes |
| Section | Pontica |
| Subsection | Falconera |
| Introduced | 1990 |
| First Described | 1981 ( Ming ) |
| Origin | W. Yunnan 3200 meter |
| Epiphytic/Terrestrial | terrestrial |
| Bloom Time | ? |
| Flower | ? |
| Flower Color | white |
| Fragrance | ? |
| Leaves | ? |
| Leaf persistence | Evergreen |
| Minimum Hardiness | -10 C (14 F) |
| Additional Hardiness Info |
H4 |