Gyrostachys vernalis
| Gyrostachys vernalis (Engelmann & Gray) Kuntze, Revis. Gen. Pl. 2: 664. 1891. | BASIONYM: Spiranthes vernalis Engelmann & A. Gray 1845. | |
Gyrostachys xyridifolia
| Gyrostachys xyridifolia Small, Fl. S.E. U.S. 318, 1329. 1903. | | TYPE: FLORIDA: Duval Co.: Near Jacksonville, 12 May 1894, Curtiss 4856 (lectotype: NY). Lectotypified by Catling, in herb., 1980. |
Ibidium vernale
| Ibidium vernale (Engelmann & Gray) House, Bull. Torrey Bot. Club 32: 381. 1905. | BASIONYM: Spiranthes vernalis Engelmann & A. Gray 1845. | |
Ibidium xyridifolium
| Ibidium xyridifolium (Small) Small, Fl. S.E. U.S., ed. 2. 319. 1913. | BASIONYM: Gyrostachys xyridifolia Small 1903. | |
Triorchis vernalis
| Triorchis vernalis (Engelmann & Gray) House, Amer. Midl. Naturalist 6: 206. 1920. | BASIONYM: Spiranthes vernalis Engelmann & A. Gray 1845. | |
Triorchis xyridifolia
| Triorchis xyridifolia (Small) House, Amer. Midl. Naturalist 6: 206. 1920. | BASIONYM: Gyrostachys xyridifolia Small 1903. | |
Gyrostachys linearis
| Gyrostachys linearis Rydberg, in Britton, Man. Fl. N. States 300. 1901. | | TYPE: NEW JERSEY: Bergen Co.: Closter, 1858, Austin s.n. (holotype: NY; isotype: NY). |
Gyrostachys reverchonii
| Gyrostachys reverchonii Small, Bull. Torrey Bot. Club 25: 610. 1898. | | TYPE: TEXAS: Dallas Co.: Lancaster, Jun, Reverchon s.n. (holotype: NY). |
Ophrys aestivalis
| Ophrys aestivalis Michaux, Fl. Bor.-Amer. 2: 157. 1803. | | |
Spiranthes neglecta
| Spiranthes neglecta Ames,Rhodora 6: 30, pl. 51, f. 4. 1904. | | TYPE: MASSACHUSETTS: Bristol Co.: Easton, Sep 1903, Eaton s.n. (holotype: GH). |
Spiranthes reverchonii
| Spiranthes reverchonii (Small) K. Schumann, Just's Bot. Jahresber. 26(1): 339. 1898. | BASIONYM: Gyrostachys reverchonii Small 1898. | |
Triorchis linearis
| Triorchis linearis (Rydberg) Nieuwland, Amer. Midl. Naturalist 3: 123. 1913. | BASIONYM: Gyrostachys linearis Rydberg 1901. | |