Spiranthes romanzoffiana Cham. in Linnaea 3: 32-33. 1828 sec. Soto-Arenas & al. 2007
- =Gyrostachys stricta Rydb. in Mem. New York Bot. Gard. 1: 107. 1900 syn. sec. Solano Gómez & al. 2020
- =Ibidium strictum (Rydb.) House in Bull. Torrey Bot. Club 6: 37. 1905 syn. sec. Solano Gómez & al. 2020
- =Spiranthes stricta (Rydb.) A. Nelson, New Man. Bot. Rocky Mt.: 125. 1909 syn. sec. Solano Gómez & al. 2020
- =Triorchis romanzoffiana (Cham.) Nieuwl. in Amer. Midl. Naturalist 3: 123. 1913 syn. sec. Solano Gómez & al. 2020
- =Triorchis stricta (Rydb.) Nieuwl. in Amer. Midl. Naturalist 3: 123. 1913 syn. sec. Solano Gómez & al. 2020