R. viscosum 'Good Old Summertime'
Species selection of R. viscosum
| Selected By | unknown, 1987 |
| Subgenus | Pentanthera |
| Section | Pentanthera |
| Subsection | Pentanthera |
| 10 Year Height | ? |
| Bloom Time | very late |
| Flower | ? |
| Predominant Colour | ? |
| Leaves | ? |
| Winter Foliage | ? |
| Hardiness | ? |