Pogonia verticillata (Muhlenberg ex Willdenow) Nuttall

Pogonia verticillata (Muhlenberg ex Willdenow) Nuttall is a synonym sensu FNA Ed. Comm., 2002b of:

Isotria verticillata (Muhlenberg ex Willdenow) Rafinesque, an accepted species name sensu FNA Ed. Comm., 2002b.