R. degronianum ssp yakushimanum 'Siouxon'
Species selection of R. degronianum ssp yakushimanum
| Selected By | Larson, H.L. , Tacoma, Washington , USA, 1960 |
| Subgenus | Hymenanthes |
| Section | Pontica |
| Subsection | Pontica |
| 10 Year Height | 30 cm. (1ft.) |
| Bloom Time | midseason |
| Flower | openly campanulate |
| Predominant Colour | ? |
| Leaves | narrowly obovate |
| Winter Foliage | ? |
| Hardiness | ? |