R. praeteritum
Natural Hybrid
| Subgenus | |
| Section | |
| Subsection | |
| Seed Parent | ? |
| Pollen Parent | ? |
| First Described | 1924 (Hutch.) |
| Habitat | terrestrial |
| 10 Year Height | ? |
| Bloom Time | ? |
| Flower | ? |
| Predominant Colour | ? |
| Leaves | ? |
| Winter Foliage | evergreen |
| Hardiness | H5 |
| Subgenus | |
| Section | |
| Subsection | |
| Seed Parent | ? |
| Pollen Parent | ? |
| First Described | 1924 (Hutch.) |
| Habitat | terrestrial |
| 10 Year Height | ? |
| Bloom Time | ? |
| Flower | ? |
| Predominant Colour | ? |
| Leaves | ? |
| Winter Foliage | evergreen |
| Hardiness | H5 |