R. kosterianum
Natural Hybrid
| Subgenus | Pentanthera |
| Section | Pentanthera |
| Subsection | Sinensia |
| Seed Parent | R. molle ssp molle |
| Pollen Parent | R. molle ssp japonicum |
| Bloom Time | ? |
| Flower | ? |
| Predominant Colour | ? |
| Leaves | ? |
| Winter Foliage | evergreen |
| Hardiness | ? |
| Subgenus | Pentanthera |
| Section | Pentanthera |
| Subsection | Sinensia |
| Seed Parent | R. molle ssp molle |
| Pollen Parent | R. molle ssp japonicum |
| Bloom Time | ? |
| Flower | ? |
| Predominant Colour | ? |
| Leaves | ? |
| Winter Foliage | evergreen |
| Hardiness | ? |