| Orchidaceae | |
Spiranthes cernua var. cernua
| | | |
| Orchidaceae | |
Spiranthes cernua var. ochroleuca
| (Rydb.) Ames | Orchidaceae 1: 145 | 1905 |
| Orchidaceae | |
Spiranthes cernua var. odorata
| (Nutt.) Correll | Bot. Mus. Leafl. 8: 79 | 1940 |
| Orchidaceae | * |
Spiranthes cernua var. parviflora
| Chapm. | Fl. South. U.S. ed. 3: 488 | 1897 |