R. rex ssp gratum
Species
| Subgenus | Hymenanthes |
| Section | Pontica |
| Subsection | Falconera |
| In cultivation since | 1990 |
| First Described | 1981 (Ming) |
| Origin | W. Yunnan 3200 meter |
| Habitat | terrestrial |
| 10 Year Height | ? |
| Bloom Time | ? |
| Flower | ? |
| Predominant Colour | white |
| Leaves | ? |
| Winter Foliage | evergreen |
| Hardiness | H4 |