Monographs Details: Verbena bonariensis L. var. bonariensis
Authority: Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
Description:Variety Description - A S. Amer. sp. with the lvs semi-amplexicaul and subcordate at base, is intr. in se. U.S. and rarely found in our range.