| rhododendron williamsianum | | United Kingdom | | 121490100 |
| rhododendron williamsianum | | United Kingdom | | 121490101 |
| rhododendron williamsianum | | United Kingdom | | 121490102 |
| rhododendron williamsianum | | United Kingdom | | 121490114 |
| rhododendron williamsianum | | United Kingdom | | 121490115 |
| rhododendron williamsianum | | United Kingdom | | 121490116 |