| Genus Name | Genus | Grex Name | Year | Author | |
|---|---|---|---|---|---|
| Add+ | Platanthera | P | leucophaea | 1835 | (Nutt.) Lindl. | 
| Add+ | Blephariglottis | Bg | leucophaea | 1901 | (Nutt.) Rydb. in N.L.Britton | 
| Add+ | Fimbriella | Fimbriella | leucophaea | 1981 | (Nutt.) Butzin | 
| Add+ | Orchis | Orchis | leucophaea | 1835 | Nutt. |