Viola praemorsa subsp. linguifolia (Nuttall) M.S. Baker
Viola praemorsa subsp. linguifolia (Nuttall) M.S. Baker is a synonym sensu FNA Ed. Comm., 2015 of:
Viola praemorsa var. linguifolia (Nuttall) M. Peck, an accepted variety name sensu FNA Ed. Comm., 2015.