R. principis
Species
| Botanical Synonyms | R. principis var vellereum R. vellereum (Hutch.) | 
| Subgenus | Hymenanthes | 
| Section | Pontica | 
| Subsection | Taliensia | 
| In cultivation since | 1925 | 
| First Described | 1891 (Bur.,Franch.) | 
| Origin | S.& E. Tibet 2700-4600 meter | 
| Habitat | terrestrial | 
| 10 Year Height | ? | 
| Mature Wild Height | 500 cm. (17ft.) | 
| Bloom Time | early | 
| Flower | campanulate | 
| Predominant Colour | violet | 
| Leaves | oblong-ovate | 
| Winter Foliage | evergreen | 
| Hardiness | H5 | 
|   | 
 | 
|   | 
 | 
|   | 
 | 
|   | 
 | 
|   | 
 |