R. 'laetum x macgregoriae'
Vireya Hybrid
| Hybridized By | Unknown |
| Seed Parent | R. laetum |
| Pollen Parent | R. macgregoriae |
| 10 Year Height | ? |
| Bloom Time | ? |
| Flower | ? |
| Flower Color | ? |
| Leaves | ? |
| Winter Foliage | ? |
| Hardiness | ? |
| Hybridized By | Unknown |
| Seed Parent | R. laetum |
| Pollen Parent | R. macgregoriae |
| 10 Year Height | ? |
| Bloom Time | ? |
| Flower | ? |
| Flower Color | ? |
| Leaves | ? |
| Winter Foliage | ? |
| Hardiness | ? |