R. viscosum Serrulatum Group
Species
| Subgenus | Pentanthera |
| Section | Pentanthera |
| Subsection | Pentanthera |
| 10 Year Height | ? |
| Bloom Time | ? |
| Flower | ? |
| Predominant Colour | ? |
| Leaves | ? |
| Winter Foliage | deciduous |
| Hardiness | ? |
| Subgenus | Pentanthera |
| Section | Pentanthera |
| Subsection | Pentanthera |
| 10 Year Height | ? |
| Bloom Time | ? |
| Flower | ? |
| Predominant Colour | ? |
| Leaves | ? |
| Winter Foliage | deciduous |
| Hardiness | ? |