Denslovia clavellata
| Denslovia clavellata (Michaux) Rydberg, Brittonia 1: 86. 1931. | BASIONYM: Orchis clavellata Michaux 1803. | |
Gymnadenia tridentata
| Gymnadenia tridentata (Muhlenberg ex Willdenow) Lindley, Gen. Sp. Orchid. Pl. 277. 1835. | BASIONYM: Orchis tridentata Muhlenberg ex Willdenow 1805. | |
Gymnadenia tridentata var. clavellata
| Gymnadenia tridentata (Muhlenberg ex Willdenow) Lindley, var. clavellata (Michaux) A. W. Wood, Class-Book Bot., ed. 1861. 683. 1861. | BASIONYM: Orchis clavellata Michaux 1803. | |
Gymnadeniopsis clavellata
| Gymnadeniopsis clavellata (Michaux) Rydberg, in Britton, Man. Fl. N. States 293. 1901. | BASIONYM: Orchis clavellata Michaux 1803. | |
Habenaria clavellata
| Habenaria clavellata (Michaux) Sprengel, Syst. Veg. 3: 689. 1826. | BASIONYM: Orchis clavellata Michaux 1803. | |
Habenaria tridentata
| Habenaria tridentata (Muhlenberg ex Willdenow) Hooker, Exot. Fl. 2: pl. 81. 1824. | BASIONYM: Orchis tridentata Muhlenberg ex Willdenow 1805. | |
Orchis clavellata
| Orchis clavellata Michaux, Fl. Bor.-Amer. 2: 155. 1803. | | |
Orchis tridentata
| Orchis tridentata Muhlenberg ex Willdenow, Sp. Pl. 4: 41. 1805. | | TYPE: PENNSYLVANIA: |
Peristylus clavellatus
| Peristylus clavellatus (Michaux) Kraenzlin, Orch. Gen. Sp. 1: 521. 1898. | BASIONYM: Orchis clavellata Michaux 1803. | |
Habenaria clavellata var. ophioglossoides
| Habenaria clavellata (Michaux) Sprengel, var. ophioglossoides Fernald, Rhodora 48: 161. 1946. | | TYPE: CANADA: Nova Scotia: Yarmouth Co.: Near Porcupine Lake, Arcadia, 2 Sep 1920, Fernald & Long 20839 (holotype: GH). |
Platanthera clavellata forma slaughteri
| Platanthera clavellata (Michaux) Luer, forma slaughteri P. M. Brown, N. Amer. Native Orchid J. 1: 200. 1995. | | TYPE: ARKANSAS: Saline Co.: Without locality, Jun 1993, Slaughter s.n. (holotype: P. M. Brown, N. Amer. Native Orchid J. 1(3): pl. 2. 1995). |