R. 'Mrs J.C. Williams'
Rhododendron Hybrid
| Hybridized By | Waterer, H. (Knaphill) |
| Introduced | 1938 |
| 10 Year Height | 200 cm. (7ft.) |
| Bloom Time | midseason |
| Flower | funnel-shaped |
| Predominant Colour | ? |
| Leaves | oblanceolate |
| Winter Foliage | ? |
| Hardiness | H4 |
| Status | IRRC registered. |