Persicaria virginiana (Linnaeus) Gaertner. Section: Tovara. Jumpseed, Virginia Knotweed. Phen: Jun-Oct. Hab: Floodplains, moist forests. Dist: NH, QC, MN, and NE, south to n. peninsular FL and TX; disjunct in c. Mexico (PUE, VER).

Origin/Endemic status: Native

Taxonomy Comments: Section Tovara consists of 3-5 species of e. North America and e. Asia (Mun & Park 1995); if the section is recognized as a genus (as it often has been), the correct name for this species is Antenoron virginianum. Variation in North America, previously sometimes recognized as varieties, as by F and G, is under study by M. Pyne.

Synonymy: = Ar, Fl4, FNA5, Mex, Mi, NE, NY, Pa, Tn, Va; = Antenoron virginianum (L.) Roberty & Vautier – Il, Horton (1972); = Polygonum virginianum L. – C, GrPl, GW2, K1, NcTx, Tx, W, WH3, Mitchell & Dean (1978); = Tovara virginiana (L.) Raf. – RAB, S, WV; < Persicaria virginiana (L.) Gaertn. – K3, K4; > Polygonum virginianum L. var. glaberrimum (Fernald) Steyerm. – G; > Polygonum virginianum L. var. virginianum – G; > Tovara virginiana (L.) Raf. var. glaberrima Fernald – F; > Tovara virginiana (L.) Raf. var. virginiana – F

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