R. calendulaceum 'Little's Mountain Passion'
Species selection of R. calendulaceum
| Selected By | Little, P.L. |
| Introduced | 1994 |
| 10 Year Height | ? |
| Bloom Time | late midseason |
| Flower | tubular funnel-shaped |
| Predominant Colour | ? |
| Leaves | elliptic |
| Winter Foliage | ? |
| Hardiness | ? |