R. mekongense var mekongense 'Yellow Fellow'
Species selection of R. mekongense var mekongense
| Selected By | Clarke, S.R. |
| Introduced | 1979 |
| 10 Year Height | ? |
| Bloom Time | ? |
| Flower | openly campanulate |
| Predominant Colour | ? |
| Leaves | ? |
| Winter Foliage | ? |
| Hardiness | ? |