Robert W. Freckmann Herbarium

Search Results:       Common Name: knotweed


List for printing without synonyms and photos.
Checklist from Wisconsin State Herbarium
Click on taxon for details including: Photos ( * ), Distribution Maps ( + ), Ethnobotany and Google Search.
      Family Cuscutaceae (click for list of genera only)  
            Cuscuta polygonorum Engelm. * +
              knotweed dodder, smartweed dodder
Image of Cuscuta polygonorum Engelm.
      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
Image of Fallopia X bohemica (Chrtek & Chrtkova) J.P.Bailey
            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
Image of Fallopia japonica (Houtt.) Ronse Decr. var. japonica
            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.
Image of Fallopia sachalinensis (F.W.Schmidt ex Maxim.) Nakai
            Persicaria hydropiper (L.) Spach * +
              marsh-pepper knotweed, water-pepper
                 Polygonum hydropiper L.
                 Polygonum hydropiper L. var. projectum Stanford
Image of Persicaria hydropiper (L.) Spach
            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
Image of Persicaria lapathifolia (L.) S.F.Gray
            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
Image of Persicaria pensylvanica (L.) M.Gómez
            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
Image of Persicaria virginiana (L.) Gaertn.
            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
Image of Polygonum achoreum S.F.Blake
            Polygonum aviculare L. * +
              common knotweed, prostrate knotweed
                 (for list of synonyms - see the varieties)
Image of Polygonum aviculare L.
            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
Image of Polygonum aviculare L. subsp. buxiforme (Small) Costea & Tardif
            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
Image of Polygonum aviculare L. subsp. depressum (Meisn.) Arcang.
            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.
Image of Polygonum erectum L.
            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
Image of Polygonum ramosissimum Michx. subsp. ramosissimum
            Polygonum tenue Michx. * +
              pleat-leaf knotweed, slender knotweed
                 Polygonum tenue Michx. var. tenue
Image of Polygonum tenue Michx.


         
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