Vernonia altissima subsp. ovalifolia (Torrey & A. Gray) Urbatsch
Vernonia altissima subsp. ovalifolia (Torrey & A. Gray) Urbatsch is a synonym sensu FNA Ed. Comm., 2006a of:
Vernonia gigantea (Walter) Trelease ex Branner & Coville, an accepted species name sensu FNA Ed. Comm., 2006a.