R. degronianum ssp heptamerum var kyomauruense 'Silver Frost'
Species selection of R. degronianum ssp heptamerum var kyomauruense
| Selected By | Greer, Harold E. , Eugene, Oregon , USA, 1972 |
| Subgenus | Hymenanthes |
| Section | Pontica |
| Subsection | Pontica |
| 10 Year Height | 120 cm. (4ft.) |
| Bloom Time | midseason |
| Flower | funnel-campanulate |
| Predominant Colour | ? |
| Leaves | ovate |
| Winter Foliage | ? |
| Hardiness | ? |
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