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Family: Polygonaceae
  Genus: Fagopyrum

    Fagopyrum esculentum Moench*+
        buckwheat, fagopyrum
             Fagopyrum fagopyrum (L.) H.Karst.
             Fagopyrum sagittatum Gilib.
             Fagopyrum vulgare Hill
             Polygonum fagopyrum L.
  Genus: Polygonella

    Polygonella articulata (L.) Meisn.*+
        coastal joint-weed
             Delopyrum articulatum (L.) Small
             Polygonum articulatum L.
  Genus: Polygonum

    Polygonum achoreum S.F.Blake*+
        beak-seeded knotweed, leathery knotweed
             Polygonum erectum L. subsp. achoreum
    Polygonum amphibium L.*+
        water heart's-ease, water smartweed
    Polygonum amphibium L. var. emersum Michx.*+
        long-root smartweed, water heart's-ease, water smartweed
             Persicaria amphibia (L.) S.F.Gray, pro parte
             Persicaria amphibia (L.) S.F.Gray var. emersa (Michx.) Hickman
             Persicaria coccinea (Muhl.) Greene
             Persicaria muhlenbergii (S.Watson) Small
             Persicaria pratincola Greene
             Polygonum amphibium L. f. terrestre (Willd.) S.F.Blake
             Polygonum amphibium L. var. coccineum (Muhl. ex Willd.) Farw.
             Polygonum amphibium L. var. terrestre Willd.
             Polygonum coccineum Muhl. ex Willd.
             Polygonum coccineum Muhl. ex Willd. f. natans (Wiegand) Stanford
             Polygonum coccineum Muhl. ex Willd. f. terrestre (Willd.) Stanford
             Polygonum coccineum Muhl. ex Willd. var. pratincola (Greene) Stanford
             Polygonum coccineum Muhl. ex Willd. var. terrestre Willd.
             Polygonum muhlenbergii S.Watson
             Polygonum muhlenbergii S.Watson f. natans Wiegand
             Polygonum muhlenbergii S.Watson var. terrestre (Willd.) Trel.
             Polygonum rigidulum E.Sheld.
             Polygonum terrestre (Willd.) Britton, Sterns & Poggenb.
    Polygonum amphibium L. var. stipulaceum N.Coleman*+
        water heart's-ease, water smartweed
             Persicaria amphibia (L.) S.F.Gray var. stipulacea (N.Coleman) Hara
             Persicaria mesochora Greene
             Persicaria nebraskensis Greene
             Polygonum amphibium L. f. hirtuosum Farw.
             Polygonum amphibium L. subsp. laevimarginatum
             Polygonum amphibium L. var. hartwrightii (A.Gray) Bissell
             Polygonum amphibium L. f. fluitans (Eaton) Fernald var. stipulaceum N.Coleman
             Polygonum amphibium L. f. hirtuosum (Farw.) Fernald var. stipulaceum N.Coleman
             Polygonum amphibium L. f. simile Fernald var. stipulaceum N.Coleman
             Polygonum coccineum Muhl. ex Willd. var. rigidulum (E.Sheld.) Stanford
             Polygonum fluitans Eaton
             Polygonum hartwrightii A.Gray
             Polygonum inundatum Raf.
             Polygonum natans Eaton
             Polygonum natans Eaton f. genuinum Stanford
             Polygonum natans Eaton f. hartwrightii (A.Gray) Stanford
             Polygonum natans Eaton f. natans
    Polygonum arenastrum Boreau*+
        door-yard knotweed, oval-leaved knotweed
             Polygonum aequale Lindm.
             Polygonum aviculare L. var. arenastrum (Boreau) Rouy
             Polygonum montereyense Brenckle
    Polygonum arifolium L.*+
        halberd-leaved tear-thumb
             Polygonum arifolium L. var. lentiforme Fernald & Griscom
             Polygonum arifolium L. var. pubescens (R.Keller) Fernald
             Polygonum sagittatum L. var. pubescens Keller
             Tracaulon arifolium (L.) Raf.
    Polygonum aviculare L.*+
        common knotweed, prostrate knotweed
             Polygonum aviculare L. var. vegetum Ledeb.
             Polygonum heterophyllum Lindm.
             Polygonum monspeliense Pers.
    Polygonum bellardii All.
        narrow-leaved knotweed
             Polygonum aviculare L. var. angustissimum Meisn.
             Polygonum neglectum Besser
             Polygonum provinciale K.Koch
             Polygonum rurivagum Jord. ex Boreau
    Polygonum buxiforme Small+
        box knotweed, boxwood knotweed
             Polygonum aviculare L. var. crassifolium Lange
             Polygonum aviculare L. var. littorale (Link) Mert.
             Polygonum littorale Link
    Polygonum careyi Olney*+
        Carey's heart's-ease, Carey's smartweed
             Persicaria careyi (Olney) Greene
    Polygonum cespitosum Blume
        Oriental lady's-thumb
    Polygonum cespitosum Blume var. longisetum (Bruyn) Stewart*+
        Oriental lady's-thumb
             Persicaria longiseta (Bruyn) Moldenke
             Polygonum longisetum Bruyn
    Polygonum cilinode Michx.*+
        black-fringe bindweed, fringed bindweed
             Bilderdykia cilinodis (Michx.) Greene
             Bilderdykia cilinodis (Michx.) Greene var. laevigata (Fernald) C.F.Reed
             Fallopia cilinodis (Michx.) Holub
             Polygonum cilinode Michx. f. erectum (Peck) Fernald
             Polygonum cilinode Michx. var. erectum Peck
             Polygonum cilinode Michx. var. laevigatum Fernald
             Reynoutria cilinodis (Michx.) Shinners
             Tiniaria cilinodis (Michx.) Small
    Polygonum convolvulus L.*+
        black-bindweed, false buckwheat
             Bilderdykia convolvulus (L.) Dumort.
             Fallopia convolvulus (L.) A.Löve
             Polygonum convolvulus L. var. convolvulus
             Reynoutria convolvulus (L.) Shinners
             Tiniaria convolvulus (L.) Webb. & Moq.
    Polygonum cuspidatum Siebold & Zucc.*+
        Japanese knotweed, Mexican bamboo
             Fallopia japonica (Houtt.) Ronse Decr.
             Pleuropterus cuspidatus (Siebold & Zucc.) H.Gross
             Pleuropterus zuccarinii (Small) Small
             Polygonum cuspidatum Siebold & Zucc. var. compactum (Hook.f.) L.H.Bailey
             Polygonum zuccarinii Small
             Reynoutria japonica Houtt.
             Tiniaria japonica (Houtt.) Hedberg
    Polygonum erectum L.+
        erect knotweed
             Polygonum aviculare L. var. erectum (L.) Roth ex Meisn.
    Polygonum fowleri B.L.Rob.
        Fowler's knotweed
             Polygonum buxifolium Nutt. ex Bong.
    Polygonum hydropiper L.*+
        marsh-pepper knotweed, water-pepper
             Persicaria hydropiper (L.) Opiz
             Polygonum hydropiper L. var. projectum Stanford
    Polygonum hydropiperoides Michx.*+
        false water-pepper, mild water-pepper, swamp smartweed
             Persicaria hydropiperoides (Michx.) Small
             Persicaria hydropiperoides (Michx.) Small var. breviciliata (Fernald) C.F.Reed
             Persicaria hydropiperoides (Michx.) Small var. euronotora (Fernald) C.F.Reed
             Persicaria hydropiperoides (Michx.) Small var. opelousana (Riddell) J.S.Wilson
             Persicaria opelousana (Riddell ex Small) Small
             Persicaria paludicola Small
             Persicaria persicarioides (Kunth) Small
             Polygonum hydropiperoides Michx. f. strigosum (Small) Stanford
             Polygonum hydropiperoides Michx. var. adenocalyx (Stanford) Gleason
             Polygonum hydropiperoides Michx. var. asperifolium Stanford
             Polygonum hydropiperoides Michx. var. breviciliatum Fernald
             Polygonum hydropiperoides Michx. var. bushianum Stanford
             Polygonum hydropiperoides Michx. var. digitatum Fernald
             Polygonum hydropiperoides Michx. var. euronotorum Fernald
             Polygonum hydropiperoides Michx. var. hydropiperoides
             Polygonum hydropiperoides Michx. var. opelousanum (Riddell ex Small) W.Stone
             Polygonum hydropiperoides Michx. var. psilostachyum H.St.John
             Polygonum hydropiperoides Michx. var. strigosum Small
             Polygonum opelousanum Riddell ex Small
             Polygonum opelousanum Riddell ex Small var. adenocalyx Stanford
             Polygonum persicarioides Kunth
    Polygonum hydropiper L. X P. punctatum Elliott+
    Polygonum lapathifolium L.*+
        curly-top knotweed, dock-leaved smartweed, heart's-ease
             Persicaria incarnata (Elliott) Small
             Persicaria lapathifolia (L.) S.F.Gray
             Persicaria tomentosa (Schrank) E.P.Bicknell
             Polygonum incarnatum Elliott
             Polygonum incanum F.W.Schmidt
             Polygonum lapathifolium L. subsp. pallidum
             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
             Polygonum scabrum Moench
             Polygonum tomentosum Schrank
    Polygonum orientale L.*+
        kiss-me-over-the-garden-gate, prince's-feather
             Persicaria orientale (L.) Spach
             Persicaria orientalis (L.) Spach
             Polygonum spaethii Dammer
    Polygonum pensylvanicum L.*+
        Pennsylvania knotweed, Pennsylvania smartweed, pinkweed
             Persicaria bicornis (Raf.) Nieuwl.
             Persicaria longistyla (Small) Small
             Persicaria mississippiensis (Stanford) Small
             Persicaria pensylvanica (L.) M.Gómez
             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 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. f. albineum Farw. var. laevigatum Fernald
             Polygonum pensylvanicum L. f. pallescens Stanford var. laevigatum Fernald
             Polygonum pensylvanicum L. var. rosaeflorum Norton
    Polygonum persicaria L.*+
        heart's-ease, spotted lady's-thumb
             Persicaria maculata (Raf.) S.F.Gray
             Persicaria persicaria (L.) Small
             Persicaria ruderalis (Salisb.) C.F.Reed
             Persicaria ruderalis (Salisb.) C.F.Reed var. vulgaris (Webb & Moq.) C.F.Reed
             Persicaria vulgaris Webb & Moq.
             Polygonum dubium Stein
             Polygonum fusiforme Greene
             Polygonum minus auct. non Huds.
             Polygonum minus Huds. var. subcontinuum (Meisn.) Fernald
             Polygonum persicaria L. var. angustifolium Beckh.
             Polygonum persicaria L. var. ruderale (Salisb.) Meisn.
             Polygonum puritanorum Fernald
             Polygonum ruderale Salisb.
             Polygonum strictum Meisn. var. subcontinuum Meisn.
    Polygonum punctatum Elliott*+
        dotted smartweed
    Polygonum punctatum Elliott var. confertiflorum (Meisn.) Fassett+
        dotted smartweed
             Persicaria punctata (Elliott) Small var. leptostachya (Meisn.) Small
             Polygonum acre Kunth var. confertiflorum Meisn.
             Polygonum acre Kunth var. leptostachyum Meisn.
             Polygonum antihaemorrhoidale Mart. f. aquatile Mart.
             Polygonum punctatum Elliott f. longicollum Fassett var. confertiflorum (Meisn.) Fassett
             Polygonum punctatum Elliott var. leptostachyum (Meisn.) Small
             Polygonum punctatum Elliott var. parvum Vict. & J.Rousseau
    Polygonum punctatum Elliott var. littorale Fassett+
        dotted smartweed
    Polygonum punctatum Elliott var. punctatum +
        dotted smartweed
             Persicaria punctata (Elliott) Small
             Persicaria punctata (Elliott) Small var. eciliata Small
             Polygonum acre Kunth
             Polygonum punctatum Elliott var. aquatile (Mart.) Fernald
             Polygonum punctatum Elliott f. stipitatum Fassett var. aquatile (Mart.) Fernald
             Polygonum punctatum Elliott var. ellipticum Fassett
             Polygonum punctatum Elliott var. parviflorum Fassett
    Polygonum ramosissimum Michx.*+
        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. f. atlanticum B.L.Rob.
             Polygonum ramosissimum Michx. var. ramosissimum
             Polygonum triangulum E.P.Bicknell
    Polygonum sachalinense F.W.Schmidt ex Maxim.*+
        giant knotweed
             Fallopia sachalinensis (F.W.Schmidt ex Maxim.) Nakai
             Pleuropterus sachalinensis (F.W.Schmidt ex Maxim.) H.Gross
             Reynoutria sachalinensis (F.W.Schmidt ex Maxim.) Nakai
             Tiniaria sachalinensis (F.W.Schmidt ex Maxim.) Janch.
    Polygonum sagittatum L.*+
        arrow-leaved tear-thumb
             Polygonum sagittatum L. var. gracilentum Fernald
             Tracaulon sagittatum (L.) Small
             Tracaulon sagittatum (L.) Small var. gracilentum (Fernald) C.F.Reed
             Truellum sagittatum (L.) Soják
    Polygonum scandens L.*+
        climbing false buckwheat
    Polygonum scandens L. var. cristatum (Engelm. & A.Gray) Gleason+
        climbing false buckwheat
             Bilderdykia cristata (Engelm. & A.Gray) Greene
             Bilderdykia scandens (L.) Greene var. cristata (Engelm. & A.Gray) C.F.Reed
             Polygonum cristatum Engelm. & A.Gray
             Reynoutria scandens (L.) Shinners var. cristata (Engelm. & A.Gray) Shinners
             Tiniaria cristata (Engelm. & A.Gray) Small
    Polygonum scandens L. var. dumetorum (L.) Gleason
        climbing false buckwheat
             Bilderdykia dumetorum (L.) Dumort.
             Polygonum dumetorum L.
             Reynoutria scandens (L.) Shinners var. dumetorum (L.) Shinners
             Tiniaria dumetorum (L.) Opiz
    Polygonum scandens L. var. scandens +
        climbing false buckwheat
             Bilderdykia scandens (L.) Greene
             Fallopia scandens (L.) Holub
             Polygonum dumetorum L. var. scandens (L.) A.Gray
             Reynoutria scandens (L.) Shinners
             Tiniaria scandens (L.) Small
    Polygonum tenue Michx.
        pleat-leaf knotweed, slender knotweed
    Polygonum tenue Michx. var. tenue *+
        pleat-leaf knotweed, slender knotweed
    Polygonum virginianum L.*+
        jumpseed, woodland knotweed
             Antenoron virginianum (L.) Roberty & Vautier
             Persicaria virginiana (L.) Gaertn.
             Polygonum virginianum L. var. glaberrimum (Fernald) Steyerm.
             Tovara virginiana (L.) Raf.
             Tovara virginiana (L.) Raf. var. glaberrima Fernald
    Polygonum X bohemicum (Chrtek & Chrtková) P.F. Zita & A.L. Jacobson X
        Bohemian knotweed, hybrid knotweed
  Genus: Rheum

    Rheum rhabarbarum L.*+
        garden rhubarb, pie plant
             Rheum rhaponticum auct. non L.
  Genus: Rumex

    Rumex acetosella L.*+
        common sheep sorrel, field sorrel, red sorrel, sheep sorrel
             Acetosella acetosella (L.) Small
             Acetosella tenuifolia (Wallr.) A.Löve
             Acetosella vulgaris (Koch) Fourr.
             Rumex acetosella L. subsp. angiocarpus
             Rumex acetosella L. var. pyrenaeus (Pourr.) Timb.-Lagr.
             Rumex acetosella L. var. tenuifolius Wallr.
             Rumex angiocarpus Murb.
             Rumex tenuifolius (Wallr.) A.Löve
    Rumex acetosa L.+
        Green sorrel
             Rumex acetosa L. subsp. acetosa
    Rumex altissimus A.W.Wood+
        pale dock, smooth dock, water dock
             Rumex britannicus Meisn., non L.
             Rumex ellipticus Greene
    Rumex crispus L.*+
        curly dock, sour dock
             Rumex elongatus Guss.
    Rumex longifolius DC.+
        door-yard dock, yard dock
             Rumex domesticus Hartm.
    Rumex maritimus L.
        golden dock
    Rumex maritimus L. subsp. fueginus*+
        golden dock
             Rumex fueginus Phil.
             Rumex maritimus L. var. athrix H.St.John
             Rumex maritimus L. var. fueginus (Phil.) Dusén
    Rumex obtusifolius L.*+
        bitter dock
             Acetosa oblongifolia (L.) A.Löve & D.Löve
             Rumex obtusifolius L. subsp. agrestis
             Rumex obtusifolius L. subsp. sylvestris
             Rumex obtusifolius L. var. sylvestris (Wallr.) Koch
    Rumex orbiculatus A.Gray*+
        great water dock
             Rumex britannica of Amer. authors, not L.
             Rumex orbiculatus A.Gray var. borealis Rech.f.
             Rumex orbiculatus A.Gray var. orbiculatus
    Rumex patientia L.+
        patience dock
             Rumex patientia L. var. kurdicus Boiss.
    Rumex salicifolius Weinm.
        willow dock
    Rumex salicifolius Weinm. var. mexicanus (Meisn.) C.L.Hitchc.+
        willow dock
             Rumex mexicanus Meisn.
             Rumex mexicanus Meisn. var. angustifolius (Meisn.) B.Boivin
             Rumex mexicanus Meisn. var. subarcticus (Lepage) B.Boivin
             Rumex mexicanus Meisn. var. triangulivalvis (Danser) Lepage
             Rumex quadrangulivalvis (Danser) Rech.f.
             Rumex salicifolius Weinm. subsp. triangulivalvis
             Rumex salicifolius Weinm. var. angustifolius Meisn.
             Rumex salicifolius Weinm. var. triangulivalvis (Danser) Hickman
             Rumex subarcticus Lepage
             Rumex triangulivalvis (Danser) Rech.f.
             Rumex triangulivalvis (Danser) Rech.f. var. oreolapathum Rech.f.
    Rumex sanguineus L.
        red-vien dock
    Rumex stenophyllus Ledeb.
        narrow-leaved dock
    Rumex thyrsiflorus Fingerh.
        garden sorrel, narrow-leaved sorrel
             Rumex acetosa L. subsp. thyrsiflorus
    Rumex venosus Pursh*+
        veiny dock
    Rumex verticillatus L.*+
        swamp dock, water dock
             Rumex fascicularis Small
             Rumex floridanus Meisn.
    Rumex X acutus L. (pro sp.) X +
        acute dock
             Rumex pratensis Mert. & W.D.J.Koch
             Rumex X crispobtusifolius Meisn. X

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