R. arboreum ssp delavayi 'Margum Castle'
Species selection of R. arboreum ssp delavayi
| Selected By | Unknown |
| Subgenus | Hymenanthes |
| Section | Pontica |
| Subsection | Arborea |
| 10 Year Height | ? |
| Bloom Time | ? |
| Flower | ? |
| Predominant Colour | ? |
| Leaves | ? |
| Winter Foliage | ? |
| Hardiness | ? |