Triphora trianthophoros

(Swartz) Rydberg in N. L. Britton
in N. L. Britton, Man. Fl. N. States, 298. 1901.
Common names: Nodding pogonia
Illustrated
Basionym: Arethusa trianthophoros Swartz Kongl. Vetensk. Acad. Nya Handl. 21: 230. 1800
Treatment appears in FNA Volume 26. Treatment on page 593. Mentioned on page 592, 594.

Distribution

e North America, Mexico, Central America.

Discussion

Subspecies 2 (1 in the flora).