Robert W. Freckmann Herbarium Home Plants of Wisconsin Vascular Plants Name Search

Search Results:       Common Name: knotweed

Family Cuscutaceae (click for list of genera only)
Cuscuta polygonorum Engelm. * +               knotweed dodder, smartweed dodder
Family Polygonaceae (click for list of genera only)
Fallopia X bohemica (Chrtek & Chrtkova) J.P.Bailey * +               Bohemian knotweed, hybrid knotweed                  (PARENTS =Fallopia japonica (Houtt.) Ronse Decr. X F. sachalinensis (F.W.Schmidt ex Maxim.) Nakai                  Polygonum X bohemicum (Chrtek & Chrtková) P.F. Zita & A.L. Jacobson
Fallopia japonica (Houtt.) Ronse Decr. var. japonica * +                  Pleuropterus cuspidatus (Siebold & Zucc.) H.Gross                  Pleuropterus zuccarinii (Small) Small                  Polygonum cuspidatum Siebold & Zucc.                  Polygonum cuspidatum Siebold & Zucc. var. compactum (Hook.f.) L.H.Bailey                  Polygonum zuccarinii Small                  Reynoutria japonica Houtt.                  Tiniaria japonica (Houtt.) Hedberg
Fallopia sachalinensis (F.W.Schmidt ex Maxim.) Nakai * +               giant knotweed                  Pleuropterus sachalinensis (F.W.Schmidt ex Maxim.) H.Gross                  Polygonum sachalinense F.W.Schmidt ex Maxim.                  Reynoutria sachalinensis (F.W.Schmidt ex Maxim.) Nakai                  Tiniaria sachalinensis (F.W.Schmidt ex Maxim.) Janch.
Persicaria hydropiper (L.) Spach * +               marsh-pepper knotweed, water-pepper                  Polygonum hydropiper L.                  Polygonum hydropiper L. var. projectum Stanford
Persicaria lapathifolia (L.) S.F.Gray * +               curly-top knotweed, dock-leaved smartweed, heart's-ease                  Persicaria incarnata (Elliott) Small                  Persicaria tomentosa (Schrank) E.P.Bicknell                  Polygonum incarnatum Elliott                  Polygonum incanum F.W.Schmidt                  Polygonum lapathifolium L.                  Polygonum lapathifolium L. subsp. pallidum (With.) Fr.                  Polygonum lapathifolium L. var. incanum (F.W.Schmidt) W.D.J.Koch                  Polygonum lapathifolium L. var. lapathifolium                  Polygonum lapathifolium L. var. nodosum (Pers.) Small                  Polygonum lapathifolium L. var. ovatum A.Braun                  Polygonum lapathifolium L. var. prostratum Wimm.                  Polygonum lapathifolium L. var. salicifolium Sibth.                  Polygonum nodosum Pers.                  Polygonum oneillii Brenckle                  Polygonum pallidum With.                  Polygonum pensylvanicum L. subsp. oneillii (Brenckle) Hultén                  Polygonum scabrum Moench                  Polygonum tomentosum Schrank
Persicaria pensylvanica (L.) M.Gómez * +               Pennsylvania knotweed, Pennsylvania smartweed, pinkweed                  Persicaria bicornis (Raf.) Nieuwl.                  Persicaria longistyla (Small) Small                  Persicaria mississippiensis (Stanford) Small                  Persicaria pensylvanica (L.) M.Gómez var. dura (Stanford) C.F.Reed                  Polygonum bicorne Raf.                  Polygonum longistylum Small                  Polygonum longistylum Small var. omissum (Greene) Stanford                  Polygonum mexicanum auct. non Small                  Polygonum mississippiense Stanford                  Polygonum mississippiense Stanford var. interius Stanford                  Polygonum omissum Greene                  Polygonum pensylvanica L.                  Polygonum pensylvanicum L. var. durum Stanford                  Polygonum pensylvanicum L. var. eglandulosum J.C.Myers                  Polygonum pensylvanicum L. var. genuinum Fernald                  Polygonum pensylvanicum L. var. laevigatum Fernald                  Polygonum pensylvanicum L. var. laevigatum Fernald f. albineum Farw.                  Polygonum pensylvanicum L. var. laevigatum Fernald f. pallescens Stanford                  Polygonum pensylvanicum L. var. rosaeflorum Norton
Persicaria virginiana (L.) Gaertn. * +               jumpseed, woodland knotweed                  Antenoron virginianum (L.) Roberty & Vautier                  Polygonum virginianum L                  Polygonum virginianum L. var. glaberrimum (Fernald) Steyerm.                  Tovara virginiana (L.) Raf.                  Tovara virginiana (L.) Raf. var. glaberrima Fernald
Polygonum L. *               fleece-flower, knotweed, smartweed (DISTRIBUTION MAP GALLERY of SPECIES)
Polygonum achoreum S.F.Blake * +               beak-seeded knotweed, leathery knotweed                  Polygonum erectum L. subsp. achoreum (S.F.Blake) A.Löve & D.Löve
Polygonum aviculare L. * +               common knotweed, prostrate knotweed                  (for list of synonyms - see the varieties)
Polygonum aviculare L. subsp. aviculare +               common knotweed, prostrate knotweed                  Polygonum aviculare L. var. vegetum Ledeb.                  Polygonum heterophyllum Lindm.                  Polygonum monspeliense Pers.
Polygonum aviculare L. subsp. buxiforme (Small) Costea & Tardif * +               box knotweed, boxwood knotweed                  Polygonum aviculare L. var. crassifolium Lange                  Polygonum aviculare L. var. littorale (Link) Mert.                  Polygonum buxiforme Small                  Polygonum littorale Link
Polygonum aviculare L. subsp. depressum (Meisn.) Arcang. * +               door-yard knotweed, oval-leaved knotweed                  Polygonum aequale Lindm.                  Polygonum arenastrum Boreau                  Polygonum aviculare L. var. arenastrum (Boreau) Rouy                  Polygonum montereyense Brenckle
Polygonum bellardii All.               [Excluded] narrow-leaved knotweed                  Polygonum aviculare L. var. angustissimum Meisn.                  Polygonum neglectum Besser                  Polygonum provinciale K.Koch                  Polygonum rurivagum Jord. ex Boreau
Polygonum erectum L. * +               erect knotweed                  Polygonum aviculare L. var. erectum (L.) Roth ex Meisn.
Polygonum fowleri B.L.Rob.               [Excluded] Fowler's knotweed                  Polygonum buxifolium Nutt. ex Bong.
Polygonum ramosissimum Michx. subsp. ramosissimum * +               bushy knotweed                  Polygonum allocarpum S.F.Blake                  Polygonum atlanticum (B.L.Rob.) E.P.Bicknell                  Polygonum autumnale Brenckle                  Polygonum exsertum Small                  Polygonum interius Brenckle                  Polygonum ramosissimum Michx.                  Polygonum ramosissimum Michx. f. atlanticum B.L.Rob.                  Polygonum ramosissimum Michx. var. ramosissimum                  Polygonum triangulum E.P.Bicknell
Polygonum tenue Michx. * +               pleat-leaf knotweed, slender knotweed                  Polygonum tenue Michx. var. tenue