Bilderdykia scandens var. cristata (Engelmann & A. Gray) C. F. Reed

Bilderdykia scandens var. cristata (Engelmann & A. Gray) C. F. Reed is a synonym sensu FNA Ed. Comm., 2005 of:

Fallopia scandens (Linnaeus) Holub, an accepted species name sensu FNA Ed. Comm., 2005.