Arethusa pendula
| Arethusa pendula Muhlenberg ex Willdenow, Sp. Pl. 4: 82. 1805, nom. illegit. | BASIONYM: Arethusa trianthophoros Swartz 1800. | |
Arethusa trianthophoros
| Arethusa trianthophoros Swartz, Kongl. Vetensk. Acad. Nya Handl. 21: 230. 1800. | | |
Pogonia mexicana
| Pogonia mexicana S. Watson, Proc. Amer. Acad. Arts 26: 154. 1891. | | TYPE: MEXICO: San Luis Potosí: Tamasopo Canyon, Aug 1890, Pringle 3557 (holotype: GH). |
Pogonia pendula
| Pogonia pendula Lindley, Bot. Reg. 11: pl. 908. 1825, nom. illegit. | BASIONYM: Arethusa pendula Muhlenberg ex Willdenow 1805, nom. illegit.; Arethusa trianthophoros Swartz 1800. | |
Pogonia trianthophoros
| Pogonia trianthophoros (Swartz) Britton et al., Prelim. Cat. 52. 1888. | BASIONYM: Arethusa trianthophoros Swartz 1800. | |
Triphora mexicana
| Triphora mexicana (S. Watson) Schlechter, Repert. Spec. Nov. Regni Veg. 17: 139. 1921. | BASIONYM: Pogonia mexicana S. Watson 1891. | |
Triphora pendula
| Triphora pendula Nuttall, Gen. N. Amer. Pl. 2: 193. 1818, nom. illegit. | BASIONYM: Arethusa pendula Muhlenberg ex Willdenow 1805; Arethusa trianthophoros Swartz 1800. | |
Triphora trianthophoros forma albidoflava
| Triphora trianthophoros (Swartz) Rydberg, forma albidoflava P. E. Keenan, Rhodora 94: 39. 1992. | | TYPE: NEW HAMPSHIRE: Grafton Co.: Near Holderness, 10 Aug 1990, Keenan s.n. (holotype: NHA). |
Triphora trianthophoros forma caerulea
| Triphora trianthophoros (Swartz) Rydberg, forma caerulea P. M. Brown, N. Amer. Native Orchid J. 7: 94. 2001. | | TYPE: FLORIDA: Suwannee Co.: Wooded stream bank about 300 yds. below Ichetucknee Springs, T6S, R15E, Sec. 12, 17 Sep 1960, Will s.n. (holotype: FLAS). |
Triphora trianthophoros forma rossii
| Triphora trianthophoros (Swartz) Rydberg, forma rossii P. M. Brown, N. Amer. Native Orchid J. 5: 6. 1999. | | TYPE: FLORIDA: Marion Co.: Ross Prairie, 23 Oct 1998, Brown s.n. (holotype: FLAS). |
Triphora trianthophoros subsp. mexicana
| Triphora trianthophoros (Swartz) Rydberg, subsp. mexicana (S. Watson) Medley, Selbyana 12: 102. 1991. | BASIONYM: Pogonia mexicana S. Watson 1891. | |
Arethusa parviflora
| Arethusa parviflora Michaux, Fl. Bor.-Amer. 2: 160. 1803. | | TYPE: KENTUCKY: |
Triphora trianthophoros var. schaffneri
| Triphora trianthophoros (Swartz) Rydberg, var. schaffneri Camp, Rhodora 42: 55. 1940. | | TYPE: OHIO: Franklin Co.: Bexley, near Columbus, 20 Oct 1934, Gordon & Schaffner s.n. (holotype: NY). |