Vernonia lettermanii Engelmann ex A. Gray. Letterman's Ironweed, Narrowleaf Ironweed. Hab: Gravel bars. Dist: AR and OK, broadly Ouachitan.
Origin/Endemic status: Endemic
Syn: = SE1; = Vernonia lettermannii Engelm. ex A.Gray – Ar, FNA19, K3, correctable orthographic error
Hover over a shape, letter, icon, or arrow on the map to see what it means.