R. degronianum ssp yakushimanum 'Siouxon'
Species selection of R. degronianum ssp yakushimanum
| Selected By | Larson, H.L. |
| Introduced | 1960 |
| 10 Year Height | 30 cm. (1ft.) |
| Bloom Time | midseason |
| Flower | openly campanulate |
| Flower Color | ? |
| Leaves | narrowly obovate |
| Winter Foliage | ? |
| Hardiness | ? |