*Persicaria perfoliata (Linnaeus) H. Gross. Section: Echinocaulon. Hab: Roadsides, banks, powerline rights-of-way. Dist: Native of e. Asia. Introduced and spreading rapidly in n. VA, MD, PA, DC, and WV. Adler (1999) reports it as occurring in PA, MD, VA, WV, DE, OH, NJ, and DC. Poindexter (2010a) reports its discovery at three separate locations in Alleghany County, NC.
Origin/Endemic status: E. and se. Asia
Synonymy: = FNA5, K3, K4, NE, NY, Pa, Va; = Ampelygonum perfoliatum (L.) Roberty & Vautier; = n/a – RAB; = Polygonum perfoliatum L. – C, F, K1, Park (1988); = Truellum perfoliatum (L.) Soják