Genus: POLYGONUM
 Family: POLYGONACEAE

Source: USDA, NRCS. 2009. The PLANTS Database (http://plants.usda.gov, 24 June 2009). National Plant Data Center, Baton Rouge, LA 70874-4490 USA.
Genera of POLYGONACEAE

Select a genus and click on Ok

 
TAXON DISTRIB. IMAGES
Polygonum uvifera L. Ricerca immagini di Polygonum uvifera L. su Google
Views: 263.808

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seagrape

Synonyms:
= Coccoloba uvifera (L.) L.
Polygonum achoreum S.F. Blake Ricerca immagini di Polygonum achoreum S.F. Blake su Google
Views: 290.705

Forb/herb - Annual

leathery knotweed

Synonyms:
= Polygonum erectum L. ssp. achoreum (S.F. Blake) A. L÷ve &
D. L÷ve
Polygonum acuminatum Kunth Ricerca immagini di Polygonum acuminatum Kunth su Google
Views: 274.547

Forb/herb - Perennial

tapertip smartweed

Synonyms:
= Persicaria acuminata (Kunth) G. Maza
Polygonum alpinum All. Ricerca immagini di Polygonum alpinum All. su Google
Views: 409.04

Forb/herb - Perennial

Alaska wild rhubarb

Synonyms:
= Aconogonum alaskanum (W. Wight ex Hultén) Soják
= Aconogonum alaskanum (W. Wight ex Hultén) Soják var. glabrescens (Hultén) H. Hinds
= Aconogonum alpinum (All.) Schur
= Aconogonum hultenianum (Yurtsev) Tzvelev
= Aconogonum hultenianum (Yurtsev) Tzvelev var. lapathifolium (Cham. &
Schltdl.) S.-P. Hong
= Pleuropteropyrum alpinum (All.) Nakai
= Polygonum alaskanum W. Wight ex Hultén
= Polygonum alaskanum W. Wight ex Hultén var. glabrescens Hultén
Polygonum alpinum - Hippolyte Coste - Flore descriptive et illustrée de la 
France, de la Corse et des contrées limitrophes, 1901-1906 - This image is in 
public domain because its copyright has expired.
Polygonum amphibium L. Ricerca immagini di Polygonum amphibium L. su Google
Views: 1297.95

Forb/herb - Perennial

water knotweed
Polygonum amphibium - Ray Schulenberg - USDA-NRCS PLANTS Database  / USDA SCS. 1989. Midwest wetland flora: Field office illustrated guide to plant species. Midwest National Technical Center, Lincoln. - Not copyrighted image Polygonum amphibium - USDA-NRCS PLANTS Database  / USDA NRCS. Wetland flora: Field office illustrated guide to plant species. USDA Natural Resources Conservation Service. - Not copyrighted image Polygonum amphibium - Hippolyte Coste - Flore descriptive et illustrée de la 
France, de la Corse et des contrées limitrophes, 1901-1906 - This image is in 
public domain because its copyright has expired. Polygonum amphibium - Steve Hurst - USDA-NRCS PLANTS Database - Not copyrighted image Polygonum amphibium - Robert H. Mohlenbrock  USDA-NRCS PLANTS Database  / USDA SCS. 1989. Midwest wetland flora: Field office illustrated guide to plant species. Midwest National Technical Center, Lincoln. - Not copyrighted image
Polygonum amphibium L. var. emersum Michx. Ricerca immagini di Polygonum amphibium L. var. emersum Michx. su Google
Views: 746.219

Forb/herb - Perennial

longroot smartweed

Synonyms:
= Persicaria amphibia (L.) Gray p.p.
= Persicaria amphibia (L.) Gray var. emersa (Michx.) J.C. Hickman
= Persicaria coccinea (Muhl. ex Willd.) Greene
= Persicaria muehlenbergii (S. Watson) Small
= Polygonum amphibium L. var. coccineum (Muhl. ex Willd.) Farw.
= Polygonum coccineum Muhl. ex Willd.
= Polygonum coccineum Muhl. ex Willd. var. pratincola (Greene) Stanford
= Polygonum coccineum Muhl. ex Willd. var. terrestre Willd.
= Polygonum muehlenbergii S. Watson
= Polygonum muehlenbergii S. Watson var. terrestre (Willd.) Trel.
Polygonum amphibium var. emersum - USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 666. Polygonum amphibium var. emersum - Robert H. Mohlenbrock  USDA-NRCS PLANTS Database  / USDA SCS. 1989. Midwest wetland flora: Field office illustrated guide to plant species. Midwest National Technical Center, Lincoln. - Not copyrighted image Polygonum amphibium var. emersum - USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 666. Polygonum amphibium var. emersum - USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 666.
Polygonum amphibium L. var. stipulaceum Coleman Ricerca immagini di Polygonum amphibium L. var. stipulaceum Coleman su Google
Views: 405.539

Forb/herb - Perennial

water smartweed

Synonyms:
= Persicaria amphibia (L.) Gray var. stipulacea (N. Coleman) H. Hara
= Persicaria mesochora Greene
= Persicaria nebraskensis Greene
= Polygonum amphibium L. ssp. laevimarginatum Hultén
= Polygonum amphibium L. var. hartwrightii (A. Gray) Bissell
= Polygonum coccineum Muhl. ex Willd. var. rigidulum (Sheldon) Stanford
= Polygonum fluitans Eaton
= Polygonum hartwrightii A. Gray
= Polygonum inundatum Raf.
= Polygonum natans Eaton
Polygonum amphibium var. stipulaceum - NPS Photo - RG Johnsson - 1965 - Public domain image. Polygonum amphibium var. stipulaceum - NPS Photo - JW Stockert - 1973 - Public domain image.
Polygonum arenarium Waldst. & Kit. Ricerca immagini di Polygonum arenarium Waldst. & Kit. su Google
Views: 221.852

Forb/herb - Annual

European knotweed
Polygonum arenastrum Jord. ex Boreau Ricerca immagini di Polygonum arenastrum Jord. ex Boreau su Google
Views: 2376.22

Forb/herb - Annual, Perennial

oval-leaf knotweed

Synonyms:
= Polygonum aequale Lindm.
= Polygonum aviculare L. var. arenastrum (Jord. ex Boreau) Rouy
= Polygonum montereyense Brenckle
Polygonum arenastrum - Credit: Photo by Aldo De Bastiani Polygonum arenastrum - Credit: Photo by Giorgio Faggi Polygonum arenastrum - Credit: Photo by Franco Rossi Polygonum arenastrum - Credit: Photo by Giorgio Faggi Polygonum arenastrum - Credit: Photo by Giorgio Faggi
Polygonum argyrocoleon Steud. ex Kunze Ricerca immagini di Polygonum argyrocoleon Steud. ex Kunze su Google
Views: 250.869

Forb/herb - Annual

silversheath knotweed
Polygonum arifolium L. Ricerca immagini di Polygonum arifolium L. su Google
Views: 405.24

Vine, Forb/herb - Annual

halberdleaf tearthumb

Synonyms:
= Persicaria arifolia (L.) Harolds.
= Polygonum arifolium L. var. lentiforme Fernald &
Grisc.
= Polygonum arifolium L. var. pubescens (Keller) Fernald
= Tracaulon arifolium (L.) Raf.
Polygonum arifolium - USDA-NRCS PLANTS Database  / USDA NRCS. Wetland flora: Field office illustrated guide to plant species. USDA Natural Resources Conservation Service. - Not copyrighted image Polygonum arifolium - USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 673. Polygonum arifolium - Robert H. Mohlenbrock  USDA-NRCS PLANTS Database  / USDA NRCS. 1995. Northeast wetland flora: Field office guide to plant species. Northeast National Technical Center, Chester. - Not copyrighted image
Polygonum aviculare L. Ricerca immagini di Polygonum aviculare L. su Google
Views: 4016.4

Forb/herb - Annual, Perennial

prostrate knotweed

Synonyms:
= Polygonum aviculare L. var. vegetum Ledeb.
= Polygonum heterophyllum Lindl.
= Polygonum monspeliense Pers.
Polygonum aviculare - Robert H. Mohlenbrock  USDA-NRCS PLANTS Database  / USDA NRCS. 1995. Northeast wetland flora: Field office guide to plant species. Northeast National Technical Center, Chester. - Not copyrighted image Polygonum aviculare - Photo by Leo Michels. Usage: Public Domain Polygonum aviculare - Photo by Leo Michels. Usage: Public Domain Polygonum aviculare - Credit: Photo by Enzo De Santis Polygonum aviculare - Dipartimento di Scienze della Vita, Università di Trieste - Progetto Dryades - Picture by Andrea Moro - Comune di Serle, località Ronco.,  BS,  Lombardia,  Italia, - Image licensed under a Creative Commons Attribution Non Commercial Share-Alike 3.0 License
Polygonum baldschuanicum Regel Ricerca immagini di Polygonum baldschuanicum Regel su Google
Views: 316.566

Vine - Perennial

Bukhara fleeceflower

Synonyms:
= Bilderdykia aubertii (Henry) Moldenke
= Bilderdykia baldschuanica (Regel) D.A. Webb
= Fallopia aubertii (Henry) Holub
= Fallopia baldschuanica (Regel) Holub
= Polygonum aubertii Henry
= Reynoutria baldschuanica (Regel) Shinners
Polygonum bellardii All. Ricerca immagini di Polygonum bellardii All. su Google
Views: 1102.09

Forb/herb - Annual

narrowleaf knotweed

Synonyms:
= Polygonum aviculare L. var. angustissimum Meisn.
= Polygonum neglectum Besser
= Polygonum provinciale K. Koch
= Polygonum rurivagum Jord. ex Boreau
Polygonum bellardii - Credit: Photo by Enrico Romani Polygonum bellardii - Credit: Photo by Enrico Romani Polygonum bellardii - Credit: Photo by Marco Banzato Polygonum bellardii - Credit: Photo by Enzo De Santis Polygonum bellardii - Credit: Photo by Enzo De Santis
Polygonum bidwelliae S. Watson Ricerca immagini di Polygonum bidwelliae S. Watson su Google
Views: 203.538

Forb/herb - Annual

Bidwell's knotweed

Synonyms:
= Duravia bidwelliae (S. Watson) Greene
Polygonum bistorta L. Ricerca immagini di Polygonum bistorta L. su Google
Views: 1361.48

Forb/herb - Perennial

meadow bistort
Polygonum bistorta - Picture modified from Graebner, Paul - Taschenbuch zum Pflanzenbestimmen (1918) - Permission granted to use under GFDL by Kurt Stueber. Source: www.biolib.de - Permission is granted to copy, distribute and/or modify this image under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License. Polygonum bistorta - Permission granted to use under GFDL by Kurt Stueber. Source: www.biolib.de - Permission is granted to copy, distribute and/or modify this image under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
A copy of the license is included in the section entitled "GNU Free Documentation License". Polygonum bistorta - Jacob Sturm, Johann Georg Sturm - Deutschlands Flora in Abbildungen (1796). - This image is in the public domain because its copyright has expired. Polygonum bistorta - Jan Kops et al. - Flora Batava - Permission granted to use under GFDL by Kurt Stueber. Source: www.biolib.de - Permission is granted to copy, distribute and/or modify this image under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled "GNU Free Documentation License". Polygonum bistorta - Walter Hood Fitch - Illustrations of the British Flora (1924) - Permission granted to use under GFDL by Kurt Stueber. Source: www.biolib.de - Permission is granted to copy, distribute and/or modify this image under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
A copy of the license is included in the section entitled "GNU Free Documentation License".
Polygonum bistorta L. var. bistorta Ricerca immagini di Polygonum bistorta L. var. bistorta su Google
Views: 216.948

Forb/herb - Perennial

meadow bistort

Synonyms:
= Persicaria bistorta (L.) Samp.
Polygonum bistorta L. var. plumosum (Small) B. Boivin Ricerca immagini di Polygonum bistorta L. var. plumosum (Small) B. Boivin su Google
Views: 239.636

Forb/herb - Perennial

meadow bistort

Synonyms:
= Polygonum bistorta L. ssp. plumosum (Small) Hultén
= Polygonum plumosum Small
Polygonum bistortoides Pursh Ricerca immagini di Polygonum bistortoides Pursh su Google
Views: 287.86

Forb/herb - Perennial

American bistort

Synonyms:
= Bistorta bistortoides (Pursh) Small
= Persicaria bistortoides (Pursh) H. Hinds
= Polygonum bistortoides Pursh var. linearifolium (S. Watson) Small
= Polygonum bistortoides Pursh var. oblongifolium (Meisn.) H. St. John
= Polygonum cephalophorum Greene
= Polygonum glastifolium Greene
= Polygonum vulcanicum Greene
Polygonum bistortoides - Robert H. Mohlenbrock  USDA-NRCS PLANTS Database  / USDA NRCS. 1992. Western wetland flora: Field office guide to plant species. West Region, Sacramento. - Not copyrighted image Polygonum bistortoides - USDA-NRCS PLANTS Database  / USDA NRCS. Wetland flora: Field office illustrated guide to plant species. USDA Natural Resources Conservation Service. - Not copyrighted image
Polygonum x bohemicum (J. Chrtek & Chrtkov?) Zika & Jacobson Ricerca immagini di Polygonum x bohemicum (J. Chrtek & Chrtkov?) Zika & Jacobson su Google
Views: 187.798

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Bohemian knotweed
Polygonum bolanderi W.H. Brewer Ricerca immagini di Polygonum bolanderi W.H. Brewer su Google
Views: 164.045

Subshrub, Shrub, Forb/herb - Perennial

Bolander's knotweed
Polygonum bungeanum Turcz. Ricerca immagini di Polygonum bungeanum Turcz. su Google
Views: 206.829

Forb/herb - Perennial

Bunge's smartweed

Synonyms:
= Persicaria bungeana (Turcz.) Nakai ex T. Mori
Polygonum buxiforme Small Ricerca immagini di Polygonum buxiforme Small su Google
Views: 444.565

Forb/herb - Annual

box knotweed

Synonyms:
= Polygonum aviculare L. var. littorale auct. non (Link) Mert.
= Polygonum littorale auct. non Link
Polygonum buxiforme - USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 662.
Polygonum californicum Meisn. Ricerca immagini di Polygonum californicum Meisn. su Google
Views: 250.005

Forb/herb - Annual

California knotweed

Synonyms:
= Polygonum greenii S. Watson
Polygonum campanulatum Hook. f. Ricerca immagini di Polygonum campanulatum Hook. f. su Google
Views: 200.942

Forb/herb - Perennial

bellflower smartweed
Polygonum capitatum Buch.-Ham. ex D. Don Ricerca immagini di Polygonum capitatum Buch.-Ham. ex D. Don su Google
Views: 210.135

Subshrub, Forb/herb - Perennial

pinkhead smartweed

Synonyms:
= Persicaria capitata (Buch.-Ham. ex D. Don) Gross.
Polygonum capitatum - Jose Hernandez - USDA-NRCS PLANTS Database - Not copyrighted image
Polygonum careyi Olney Ricerca immagini di Polygonum careyi Olney su Google
Views: 318.846

Forb/herb - Annual

Carey's smartweed

Synonyms:
= Persicaria careyi (Olney) Greene
Polygonum careyi - USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 668.
Polygonum cascadense W.H. Baker Ricerca immagini di Polygonum cascadense W.H. Baker su Google
Views: 324.86

Forb/herb - Annual

Cascade knotweed
Polygonum caurianum B.L. Rob. Ricerca immagini di Polygonum caurianum B.L. Rob. su Google
Views: 273.261

Forb/herb - Perennial

Alaska knotweed

Synonyms:
= Polygonum humifusum C. Merck ex K. Koch
= Polygonum humifusum C. Merck ex K. Koch ssp. humifusum
Polygonum cespitosum Blume, nom. inq. Ricerca immagini di Polygonum cespitosum Blume, nom. inq. su Google
Views: 461.996

Forb/herb - Annual

Oriental lady's thumb

Synonyms:
= Polygonum caespitosum Blume, orth. var.
Polygonum cespitosum - Robert H. Mohlenbrock  USDA-NRCS PLANTS Database  / USDA SCS. 1989. Midwest wetland flora: Field office illustrated guide to plant species. Midwest National Technical Center, Lincoln. - Not copyrighted image
Polygonum cespitosum Blume var. cespitosum Ricerca immagini di Polygonum cespitosum Blume var. cespitosum su Google
Views: 218.42

Forb/herb - Annual

Oriental lady's thumb

Synonyms:
= Persicaria caespitosa (Blume) Nakai, orth. var.
= Polygonum caespitosum Blume var. caespitosum Blume, orth. var.
Polygonum cespitosum Blume var. longisetum (Bruijn) A.N. Steward Ricerca immagini di Polygonum cespitosum Blume var. longisetum (Bruijn) A.N. Steward su Google
Views: 189.144

Forb/herb - Annual

Oriental lady's thumb

Synonyms:
= Persicaria caespitosa (Blume) Nakai var. longiseta (Bruijn) C.F. Reed, orth. var.
= Persicaria longiseta (Bruijn) Kitag.
= Polygonum caespitosum Blume var. longisetum (Bruijn) A.N. Steward, orth. var.
= Polygonum longisetum Bruijn
Polygonum chinense L. Ricerca immagini di Polygonum chinense L. su Google
Views: 307.978

Subshrub, Forb/herb - Perennial

Chinese knotweed

Synonyms:
= Persicaria chinensis (L.) A. L÷ve
Polygonum cilinode Michx. Ricerca immagini di Polygonum cilinode Michx. su Google
Views: 308.243

Vine, Forb/herb - Perennial

fringed black bindweed

Synonyms:
= Bilderdykia cilinodis (Michx.) Greene
= Bilderdykia cilinodis (Michx.) Greene var. laevigata (Fernald) C.F. Reed
= Fallopia cilinodis (Michx.) Holub
= Polygonum cilinode Michx. var. laevigatum Fernald
= Reynoutria cilinodis (Michx.) Shinners
= Tiniaria cilinodis (Michx.) Small
Polygonum cilinode - USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 674.
Polygonum convolvulus L. Ricerca immagini di Polygonum convolvulus L. su Google
Views: 500.798

Vine, Forb/herb - Annual

black bindweed
Polygonum convolvulus - Walter Hood Fitch - Illustrations of the British Flora (1924) - Permission granted to use under GFDL by Kurt Stueber. Source: www.biolib.de - Permission is granted to copy, distribute and/or modify this image under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
A copy of the license is included in the section entitled "GNU Free Documentation License". Polygonum convolvulus - Picture modified from Thomé, Otto Wilhelm - Lehrbuch der Botanik fur Gymnasien, Realschulen, forst- und landwirthschaftliche Lehranstalten, pharmaceutische Institute etc. sowie zum Selbstunterrichte. 2. Auflage. (1872) - Permission granted to use under GFDL by Kurt Stueber. Source: www.biolib.de - Permission is granted to copy, distribute and/or modify this image under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License. Polygonum convolvulus - Jan Kops et al. - Flora Batava - Permission granted to use under GFDL by Kurt Stueber. Source: www.biolib.de - Permission is granted to copy, distribute and/or modify this image under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled "GNU Free Documentation License".
Polygonum convolvulus L. var. convolvulus Ricerca immagini di Polygonum convolvulus L. var. convolvulus su Google
Views: 337.568

Vine, Forb/herb - Annual

black bindweed

Synonyms:
= Bilderdykia convolvulus (L.) Dumort.
= Fallopia convolvulus (L.) A. L÷ve
= Reynoutria convolvulus (L.) Shinners
= Tiniaria convolvulus (L.) Webb &
Moq.
Polygonum convolvulus var. convolvulus - USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 674. Polygonum convolvulus var. convolvulus - USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 674.
Polygonum convolvulus L. var. subulatum Lej. & Court. Ricerca immagini di Polygonum convolvulus L. var. subulatum Lej. & Court. su Google
Views: 162.781

Vine, Forb/herb - Annual

black bindweed
Polygonum cuspidatum Siebold & Zucc. Ricerca immagini di Polygonum cuspidatum Siebold & Zucc. su Google
Views: 581.786

Subshrub, Forb/herb - Perennial

Japanese knotweed

Synonyms:
= Fallopia japonica (Houtt.) Ronse Decr.
= Pleuropterus cuspidatus (Siebold &
Zucc.) Moldenke
= Pleuropterus zuccarinii (Small) Small
= Polygonum cuspidatum Siebold &
Zucc. var. compactum (Hook. f.) L.H. Bailey
= Polygonum zuccarinii Small
= Reynoutria japonica Houtt.
Polygonum cuspidatum - USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 676.
Polygonum davisiae W.H. Brewer ex A. Gray Ricerca immagini di Polygonum davisiae W.H. Brewer ex A. Gray su Google
Views: 200.779

Subshrub, Forb/herb - Perennial

Davis' knotweed

Synonyms:
= Aconogonum davisiae (W.H. Brewer ex A. Gray) Soják
= Aconogonum davisiae (W.H. Brewer ex A. Gray) Soják var. glabrum (G.N. Jones) S.-P. Hong
= Aconogonum newberryi (Small) Soják
= Polygonum newberryi Small
= Polygonum newberryi Small var. glabrum G.N. Jones
Polygonum douglasii Greene Ricerca immagini di Polygonum douglasii Greene su Google
Views: 274.083

Forb/herb - Annual

Douglas' knotweed
Polygonum douglasii - Jose Hernandez - USDA-NRCS PLANTS Database - Not copyrighted image Polygonum douglasii - USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 664.
Polygonum douglasii Greene ssp. austiniae (Greene) E. Murray Ricerca immagini di Polygonum douglasii Greene ssp. austiniae (Greene) E. Murray su Google
Views: 281.137

Forb/herb - Annual

Austin knotweed

Synonyms:
= Polygonum austiniae Greene
= Polygonum douglasii Greene var. austiniae (Greene) M.E. Jones
Polygonum douglasii Greene ssp. douglasii Ricerca immagini di Polygonum douglasii Greene ssp. douglasii su Google
Views: 391.519

Forb/herb - Annual

Douglas' knotweed

Synonyms:
= Polygonum buxiforme Small var. montanum (Small) R.J. Davis
= Polygonum douglasii Greene var. latifolium (Engelm.) Greene
= Polygonum emaciatum A. Nelson
= Polygonum montanum Small
Polygonum douglasii Greene ssp. engelmannii (Greene) Kartesz & Gandhi Ricerca immagini di Polygonum douglasii Greene ssp. engelmannii (Greene) Kartesz & Gandhi su Google
Views: 373.448

Forb/herb - Annual

Engelmann's knotweed

Synonyms:
= Polygonum douglasii Greene var. microspermum (Engelm.) Dorn
= Polygonum engelmannii Greene
= Polygonum microspermum (Engelm.) Small
= Polygonum tenue Michx. var. microspermum Engelm.
Polygonum douglasii Greene ssp. johnstonii (Munz) J.C. Hickman Ricerca immagini di Polygonum douglasii Greene ssp. johnstonii (Munz) J.C. Hickman su Google
Views: 184.357

Forb/herb - Annual

Johnston's knotweed

Synonyms:
= Polygonum douglasii Greene var. johnstonii Munz
= Polygonum sawatchense Small
= Polygonum sawatchense Small ssp. oblivium Costea &
Tardif
= Polygonum triandrum Coolidge
= Polygonum utahense Brenckle &
Cottam
Polygonum douglasii Greene ssp. majus (Meisn.) J.C. Hickman Ricerca immagini di Polygonum douglasii Greene ssp. majus (Meisn.) J.C. Hickman su Google
Views: 309.01

Forb/herb - Annual

large knotweed

Synonyms:
= Polygonum coarctatum Douglas ex Hook. f. var. majus Meisn.
= Polygonum majus (Meisn.) Piper
Polygonum douglasii Greene ssp. nuttallii (Small) J.C. Hickman Ricerca immagini di Polygonum douglasii Greene ssp. nuttallii (Small) J.C. Hickman su Google
Views: 188.853

Forb/herb - Annual

Nuttall's knotweed

Synonyms:
= Polygonum nuttallii Small
Polygonum douglasii Greene ssp. spergulariiforme (Meisn. ex Small) J.C. Hickman Ricerca immagini di Polygonum douglasii Greene ssp. spergulariiforme (Meisn. ex Small) J.C. Hickman su Google
Views: 214.937

Forb/herb - Annual

scatter knotweed

Synonyms:
= Polygonum spergulariiforme Meisn. ex Small
Polygonum equisetiforme Sm. Ricerca immagini di Polygonum equisetiforme Sm. su Google
Views: 2139.12

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Polygonum equisetiforme - Credit: Photo by Pancrazio Campagna Polygonum equisetiforme - Credit: Photo by Pancrazio Campagna Polygonum equisetiforme - Credit: Photo by Pancrazio Campagna Polygonum equisetiforme - Credit: Photo by Pancrazio Campagna Polygonum equisetiforme - Credit: Photo by Pancrazio Campagna
Polygonum erectum L. Ricerca immagini di Polygonum erectum L. su Google
Views: 662.646

Forb/herb - Annual

erect knotweed

Synonyms:
= Polygonum aviculare L. var. erectum (L.) Roth ex Meisn.
Polygonum erectum - USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 663.
Polygonum fowleri B.L. Rob. Ricerca immagini di Polygonum fowleri B.L. Rob. su Google
Views: 478.405

Forb/herb - Perennial

Fowler's knotweed
Polygonum fowleri - USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 660.
Polygonum fowleri B.L. Rob. ssp. fowleri Ricerca immagini di Polygonum fowleri B.L. Rob. ssp. fowleri su Google
Views: 206.419

Forb/herb - Perennial

Fowler knotweed

Synonyms:
= Polygonum buxifolium Nutt. ex Bong.
Polygonum fowleri B.L. Rob. ssp. hudsonianum (S.J. Wolf & McNeill) Costea & Tardif Ricerca immagini di Polygonum fowleri B.L. Rob. ssp. hudsonianum (S.J. Wolf & McNeill) Costea & Tardif su Google
Views: 204.135

Forb/herb - Perennial


Synonyms:
= Polygonum caurianum B.L. Rob. ssp. hudsonianum S.J. Wolf &
McNeill
= Polygonum hudsonianum (S.J. Wolf &
McNeill) H. Hinds
Polygonum glabrum Willd. Ricerca immagini di Polygonum glabrum Willd. su Google
Views: 593.84

Forb/herb - Annual, Perennial

denseflower knotweed

Synonyms:
= Persicaria densiflora (Meisn.) Moldenke
= Persicaria glabra (Willd.) G. Maza
= Persicaria portoricensis (Bertero ex Small) Small
= Polygonum densiflorum Meisn.
= Polygonum portoricense Bertero ex Small
Polygonum glabrum - USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 667.
Polygonum glaucum Nutt. Ricerca immagini di Polygonum glaucum Nutt. su Google
Views: 264.742

Subshrub, Forb/herb - Annual, Perennial

seaside knotweed

Synonyms:
= Polygonum maritimum auct. non L.
Polygonum glaucum - USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 660.
Polygonum herniarioides Delile Ricerca immagini di Polygonum herniarioides Delile su Google
Views: 261.97

Forb/herb - Annual, Perennial

rupturewort
Polygonum heterosepalum M. Peck & Ownbey Ricerca immagini di Polygonum heterosepalum M. Peck & Ownbey su Google
Views: 189.733

Forb/herb - Annual

oddsepal knotweed
Polygonum hickmanii H. Hinds & R. Morgan Ricerca immagini di Polygonum hickmanii H. Hinds & R. Morgan su Google
Views: 226.753

Forb/herb - Annual

Hickman's knotweed
Polygonum hirsutum Walter Ricerca immagini di Polygonum hirsutum Walter su Google
Views: 344.568

Forb/herb - Perennial

hairy smartweed

Synonyms:
= Persicaria hirsuta (Walter) Small
Polygonum hydropiper L. Ricerca immagini di Polygonum hydropiper L. su Google
Views: 974.188

Forb/herb - Annual

marshpepper knotweed

Synonyms:
= Persicaria hydropiper (L.) Opiz
= Polygonum hydropiper L. var. projectum Stanford
Polygonum hydropiper - Jan Kops et al. - Flora Batava - Permission granted to use under GFDL by Kurt Stueber. Source: www.biolib.de - Permission is granted to copy, distribute and/or modify this image under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled "GNU Free Documentation License". Polygonum hydropiper - Walter Hood Fitch - Illustrations of the British Flora (1924) - Permission granted to use under GFDL by Kurt Stueber. Source: www.biolib.de - Permission is granted to copy, distribute and/or modify this image under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
A copy of the license is included in the section entitled "GNU Free Documentation License". Polygonum hydropiper - USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 670. Polygonum hydropiper - Hippolyte Coste - Flore descriptive et illustrée de la 
France, de la Corse et des contrées limitrophes, 1901-1906 - This image is in 
public domain because its copyright has expired. Polygonum hydropiper - USDA-NRCS PLANTS Database  / USDA NRCS. Wetland flora: Field office illustrated guide to plant species. USDA Natural Resources Conservation Service. - Not copyrighted image
Polygonum hydropiperoides Michx. Ricerca immagini di Polygonum hydropiperoides Michx. su Google
Views: 1813.72

Forb/herb - Perennial

swamp smartweed

Synonyms:
= 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 ex Small) J.S. Wilson
= Persicaria opelousana (Riddell ex Small) Small
= Persicaria paludicola Small
= Persicaria persicarioides (Kunth) Small
= 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. opelousanum (Riddell ex Small) Riddell ex W. Stone
= Polygonum hydropiperoides Michx. var. psilostachyum H. St. John
= Polygonum hydropiperoides Michx. var. strigosum (Small) Stanford
= Polygonum opelousanum Riddell ex Small
= Polygonum opelousanum Riddell ex Small var. adenocalyx Stanford
= Polygonum persicarioides Kunth
Polygonum hydropiperoides - Robert H. Mohlenbrock  USDA-NRCS PLANTS Database  / USDA SCS. 1989. Midwest wetland flora: Field office illustrated guide to plant species. Midwest National Technical Center, Lincoln. - Not copyrighted image Polygonum hydropiperoides - Steve Hurst - USDA-NRCS PLANTS Database - Not copyrighted image Polygonum hydropiperoides - USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 669. Polygonum hydropiperoides - Robert H. Mohlenbrock  USDA-NRCS PLANTS Database  / USDA NRCS. 1995. Northeast wetland flora: Field office guide to plant species. Northeast National Technical Center, Chester. - Not copyrighted image Polygonum hydropiperoides - USDA-NRCS PLANTS Database  / USDA NRCS. Wetland flora: Field office illustrated guide to plant species. USDA Natural Resources Conservation Service. - Not copyrighted image
Polygonum lacerum Kunth Ricerca immagini di Polygonum lacerum Kunth su Google
Views: 320.826

Forb/herb - Perennial

fringed knotweed
Polygonum lapathifolium L. Ricerca immagini di Polygonum lapathifolium L. su Google
Views: 3290.91

Forb/herb - Annual

curlytop knotweed

Synonyms:
= Persicaria incarnata (Elliot) Small
= Persicaria lapathifolia (L.) Gray
= Persicaria tomentosa (Schrank) E.P. Bicknell
= Polygonum incanum F.W. Schmidt
= Polygonum incarnatum Elliot
= Polygonum lapathifolium L. ssp. pallidum (With.) Fr.
= Polygonum lapathifolium L. var. incanum (F.W. Schmidt) W.D.J. Koch
= 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 pensylvanicum L. ssp. oneillii (Brenckle) Hultén
= Polygonum scabrum Moench
= Polygonum tomentosum Schrank
Polygonum lapathifolium - Polygonum lapathifolium - Polygonum lapathifolium - Polygonum lapathifolium - Polygonum lapathifolium -
Polygonum leptocarpum B.L. Rob. Ricerca immagini di Polygonum leptocarpum B.L. Rob. su Google
Views: 348.935

Forb/herb - Annual

narrowpoint knotweed
Polygonum leptocarpum - USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 661.
Polygonum marinense T.R. Mert. & P.H. Raven Ricerca immagini di Polygonum marinense T.R. Mert. & P.H. Raven su Google
Views: 202.981

Forb/herb - Annual

Marin knotweed
Polygonum meisnerianum Cham. & Schltdl. Ricerca immagini di Polygonum meisnerianum Cham. & Schltdl. su Google
Views: 199.102

Forb/herb - Perennial

branched tearthumb
Polygonum meisnerianum Cham. & Schltdl. var. beyrichianum (Cham. & Schltdl.) Meisn. Ricerca immagini di Polygonum meisnerianum Cham. & Schltdl. var. beyrichianum (Cham. & Schltdl.) Meisn. su Google
Views: 173.564

Forb/herb - Perennial

branched tearthumb

Synonyms:
= Polygonum beyrichianum Cham. &
Schltdl.
Polygonum minimum S. Watson Ricerca immagini di Polygonum minimum S. Watson su Google
Views: 184.887

Forb/herb - Annual

broadleaf knotweed
Polygonum minus Huds. Ricerca immagini di Polygonum minus Huds. su Google
Views: 1065.89

Forb/herb - Annual, Perennial

pygmy smartweed

Synonyms:
= Persicaria minor (Huds.) Opiz
= Polygonum minus Huds. var. minus
Polygonum minus - Jan Kops et al. - Flora Batava - Permission granted to use under GFDL by Kurt Stueber. Source: www.biolib.de - Permission is granted to copy, distribute and/or modify this image under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled "GNU Free Documentation License". Polygonum minus - Walter Hood Fitch - Illustrations of the British Flora (1924) - Permission granted to use under GFDL by Kurt Stueber. Source: www.biolib.de - Permission is granted to copy, distribute and/or modify this image under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
A copy of the license is included in the section entitled "GNU Free Documentation License".
Polygonum multiflorum Thunb. Ricerca immagini di Polygonum multiflorum Thunb. su Google
Views: 275.75

Forb/herb - Perennial

tuber fleeceflower
Polygonum nepalense Meisn. Ricerca immagini di Polygonum nepalense Meisn. su Google
Views: 306.106

Forb/herb - Perennial

Nepalese smartweed

Synonyms:
= Polygonum alatum Buch.-Ham. ex D. Don
Polygonum orientale L. Ricerca immagini di Polygonum orientale L. su Google
Views: 2184.07

Forb/herb - Annual

kiss me over the garden gate

Synonyms:
= Persicaria orientalis (L.) Assenov
= Polygonum spaethii Dammer
Polygonum orientale - Permission granted to use under GFDL by Kurt Stueber. Source: www.biolib.de - Permission is granted to copy, distribute and/or modify this image under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
A copy of the license is included in the section entitled "GNU Free Documentation License". Polygonum orientale - Permission granted to use under GFDL by Kurt Stueber. Source: www.biolib.de - Permission is granted to copy, distribute and/or modify this image under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
A copy of the license is included in the section entitled "GNU Free Documentation License". Polygonum orientale - Steve Hurst - USDA-NRCS PLANTS Database - Not copyrighted image Polygonum orientale - USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 670.
Polygonum oxyspermum C.A. Mey. & Bunge ex Ledeb. Ricerca immagini di Polygonum oxyspermum C.A. Mey. & Bunge ex Ledeb. su Google
Views: 204.33

Forb/herb - Perennial


Synonyms:
= Polygonum graminifolium Wierzb. ex Heuffel
= Polygonum oxyspermum C.A. Mey. &
Bunge ex Ledeb. ssp. oxyspermum
Polygonum paronychia Cham. & Schltdl. Ricerca immagini di Polygonum paronychia Cham. & Schltdl. su Google
Views: 158.551

Subshrub - Perennial

beach knotweed
Polygonum paronychioides Small ex Rydb. Ricerca immagini di Polygonum paronychioides Small ex Rydb. su Google
Views: 241.885

-

knotweed
Polygonum parryi Greene Ricerca immagini di Polygonum parryi Greene su Google
Views: 168.769

Forb/herb - Annual

Parry's knotweed
Polygonum patulum M. Bieb. Ricerca immagini di Polygonum patulum M. Bieb. su Google
Views: 1559.19

Forb/herb - Annual

Bellard's smartweed

Synonyms:
= Polygonum bellardii auct. non All.
Polygonum patulum - Polygonum patulum - Polygonum patulum - Polygonum patulum - Polygonum patulum -
Polygonum pensylvanicum L. Ricerca immagini di Polygonum pensylvanicum L. su Google
Views: 589.64

Forb/herb - Annual

Pennsylvania smartweed

Synonyms:
= Persicaria bicornis (Raf.) Nieuwl.
= Persicaria longistyla (Small) Small
= Persicaria mississippiensis (Stanford) Small
= Persicaria pensylvanica (L.) Small
= Persicaria pensylvanica (L.) Small 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 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. rosiflorum J.B.S. Norton
Polygonum pensylvanicum - Robert H. Mohlenbrock  USDA-NRCS PLANTS Database  / USDA SCS. 1989. Midwest wetland flora: Field office illustrated guide to plant species. Midwest National Technical Center, Lincoln. - Not copyrighted image Polygonum pensylvanicum - Steve Hurst - USDA-NRCS PLANTS Database - Not copyrighted image Polygonum pensylvanicum - USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 667. Polygonum pensylvanicum - USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 667. Polygonum pensylvanicum - USDA-NRCS PLANTS Database  / USDA NRCS. Wetland flora: Field office illustrated guide to plant species. USDA Natural Resources Conservation Service. - Not copyrighted image
Polygonum perfoliatum L. Ricerca immagini di Polygonum perfoliatum L. su Google
Views: 225.975

Forb/herb - Annual

Asiatic tearthumb

Synonyms:
= Ampelygonum perfoliatum (L.) Roberty &
Vautier
Polygonum persicaria L. Ricerca immagini di Polygonum persicaria L. su Google
Views: 1574.1

Forb/herb - Annual, Perennial

spotted ladysthumb

Synonyms:
= Persicaria maculata (Raf.) Gray
= Persicaria maculosa 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 persicaria - Robert H. Mohlenbrock  USDA-NRCS PLANTS Database  / USDA NRCS. 1992. Western wetland flora: Field office guide to plant species. West Region, Sacramento. - Not copyrighted image Polygonum persicaria - Jennifer Anderson - USDA-NRCS PLANTS Database - Not copyrighted image Polygonum persicaria - Polygonum persicaria - Jan Kops et al. - Flora Batava - Permission granted to use under GFDL by Kurt Stueber. Source: www.biolib.de - Permission is granted to copy, distribute and/or modify this image under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled "GNU Free Documentation License". Polygonum persicaria - USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 668.
Polygonum phytolaccifolium Meisn. ex Small Ricerca immagini di Polygonum phytolaccifolium Meisn. ex Small su Google
Views: 182.586

Forb/herb - Perennial

poke knotweed

Synonyms:
= Aconogonum phytolaccifolium (Meisn. ex Small) Small ex Rydb.
= Aconogonum phytolaccifolium (Meisn. ex Small) Small ex Rydb. var. glabrum S.-P. Hong
Polygonum plebeium R. Br. Ricerca immagini di Polygonum plebeium R. Br. su Google
Views: 322.848

Forb/herb - Annual, Perennial

common knotweed
Polygonum polycnemoides Jaubert & Spach Ricerca immagini di Polygonum polycnemoides Jaubert & Spach su Google
Views: 131.216

Forb/herb - Annual

manyleg knotweed
Polygonum polycnemoides Jaubert & Spach var. oliveri Jaubert & Spach [excluded] Ricerca immagini di Polygonum polycnemoides Jaubert & Spach var. oliveri Jaubert & Spach [excluded] su Google
Views: 210.534

-
Polygonum polygaloides Wall. ex Meisn. Ricerca immagini di Polygonum polygaloides Wall. ex Meisn. su Google
Views: 183.024

Forb/herb - Annual

milkwort knotweed
Polygonum polygaloides Wall. ex Meisn. ssp. confertiflorum (Nutt. ex Piper) J.C. Hickman Ricerca immagini di Polygonum polygaloides Wall. ex Meisn. ssp. confertiflorum (Nutt. ex Piper) J.C. Hickman su Google
Views: 302.517

Forb/herb - Annual

fruitleaf knotweed

Synonyms:
= Polygonum confertiflorum Nutt. ex Piper
= Polygonum imbricatum Nutt.
= Polygonum kelloggii Greene var. confertiflorum (Nutt. ex Piper) Dorn
= Polygonum watsonii Small
Polygonum polygaloides Wall. ex Meisn. ssp. esotericum (L.C. Wheeler) J.C. Hickman Ricerca immagini di Polygonum polygaloides Wall. ex Meisn. ssp. esotericum (L.C. Wheeler) J.C. Hickman su Google
Views: 173.99

Forb/herb - Annual

whitemargin knotweed

Synonyms:
= Polygonum esotericum L.C. Wheeler
Polygonum polygaloides Wall. ex Meisn. ssp. kelloggii (Greene) J.C. Hickman Ricerca immagini di Polygonum polygaloides Wall. ex Meisn. ssp. kelloggii (Greene) J.C. Hickman su Google
Views: 281.782

Forb/herb - Annual

Kellogg's knotweed

Synonyms:
= Polygonum kelloggii Greene
= Polygonum unifolium Greene
Polygonum polygaloides Wall. ex Meisn. ssp. polygaloides Ricerca immagini di Polygonum polygaloides Wall. ex Meisn. ssp. polygaloides su Google
Views: 213.742

Forb/herb - Annual

milkwort knotweed
Polygonum polystachyum Wall. ex Meisn. Ricerca immagini di Polygonum polystachyum Wall. ex Meisn. su Google
Views: 355.882

Forb/herb - Perennial

cultivated knotweed

Synonyms:
= Aconogonum polystachyum (Wall. ex Meisn.) H. Haraldson
Polygonum polystachyum - Steve Hurst - USDA-NRCS PLANTS Database - Not copyrighted image
Polygonum punctatum Elliot Ricerca immagini di Polygonum punctatum Elliot su Google
Views: 989.264

Forb/herb - Annual, Perennial

dotted smartweed
Polygonum punctatum - Steve Hurst - USDA-NRCS PLANTS Database - Not copyrighted image Polygonum punctatum - Robert H. Mohlenbrock  USDA-NRCS PLANTS Database  / USDA NRCS. 1992. Western wetland flora: Field office guide to plant species. West Region, Sacramento. - Not copyrighted image Polygonum punctatum - USDA-NRCS PLANTS Database  / USDA NRCS. Wetland flora: Field office illustrated guide to plant species. USDA Natural Resources Conservation Service. - Not copyrighted image
Polygonum punctatum Elliot var. confertiflorum (Meisn.) Fassett Ricerca immagini di Polygonum punctatum Elliot var. confertiflorum (Meisn.) Fassett su Google
Views: 207.776

Forb/herb - Annual, Perennial

dotted smartweed

Synonyms:
= Persicaria punctata (Elliot) Small var. leptostachya (Meisn.) Small
= Polygonum punctatum Elliot var. leptostachyum (Meisn.) Small
= Polygonum punctatum Elliot var. parvum Victorin &
Rouss.
Polygonum punctatum Elliot var. punctatum Ricerca immagini di Polygonum punctatum Elliot var. punctatum su Google
Views: 267.961

Forb/herb - Annual, Perennial

dotted smartweed

Synonyms:
= Persicaria punctata (Elliot) Small
= Persicaria punctata (Elliot) Small var. eciliata Small
= Polygonum acre Kunth
= Polygonum punctatum Elliot var. aquatile (Mart.) Fernald
= Polygonum punctatum Elliot var. ellipticum Fassett
= Polygonum punctatum Elliot var. parviflorum Fassett
Polygonum punctatum var. punctatum - USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 670.
Polygonum raii Bab. Ricerca immagini di Polygonum raii Bab. su Google
Views: 313.012

Forb/herb - Annual, Perennial

Ray's knotweed

Synonyms:
= Polygonum oxyspermum C.A. Mey. &
Bunge ex Ledeb. ssp. raii (Bab.) Webb &
Chater
Polygonum ramosissimum Michx. Ricerca immagini di Polygonum ramosissimum Michx. su Google
Views: 222.485

Forb/herb - Annual

bushy knotweed
Polygonum ramosissimum - USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 663.
Polygonum ramosissimum Michx. var. prolificum Small Ricerca immagini di Polygonum ramosissimum Michx. var. prolificum Small su Google
Views: 286.912

Forb/herb - Annual

bushy knotweed

Synonyms:
= Polygonum prolificum (Small) B.L. Rob.
Polygonum ramosissimum var. prolificum - USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 662. Polygonum ramosissimum var. prolificum - USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 662.
Polygonum ramosissimum Michx. var. ramosissimum Ricerca immagini di Polygonum ramosissimum Michx. var. ramosissimum su Google
Views: 306.787

Forb/herb - Annual

bushy knotweed

Synonyms:
= Polygonum allocarpum S.F. Blake
= Polygonum atlanticum (B.L. Rob.) E.P. Bicknell p.p.
= Polygonum autumnale Brenckle
= Polygonum exsertum auct. non Small. p.p.
= Polygonum interius Brenckle
= Polygonum triangulum E.P. Bicknell
Polygonum ramosissimum var. ramosissimum - USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 661. Polygonum ramosissimum var. ramosissimum - USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 664. Polygonum ramosissimum var. ramosissimum - USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 661.
Polygonum robustius (Small) Fernald Ricerca immagini di Polygonum robustius (Small) Fernald su Google
Views: 259.372

Forb/herb - Perennial

stout smartweed

Synonyms:
= Persicaria robustior (Small) E.P. Bicknell
= Polygonum punctatum Elliot var. majus (Meisn.) Fassett
= Polygonum punctatum Elliot var. robustius Small
Polygonum sachalinense F. Schmidt ex Maxim. Ricerca immagini di Polygonum sachalinense F. Schmidt ex Maxim. su Google
Views: 308.172

Forb/herb - Perennial

giant knotweed

Synonyms:
= Fallopia sachalinensis (F. Schmidt ex Maxim.) Ronse Decr.
= Reynoutria sachalinensis (F. Schmidt ex Maxim.) Nakai
Polygonum sagittatum L. Ricerca immagini di Polygonum sagittatum L. su Google
Views: 422.831

Vine, Forb/herb - Annual, Perennial

arrowleaf tearthumb

Synonyms:
= Persicaria sagittata (L.) Gross.
= 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 sagittatum - USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 673. Polygonum sagittatum - USDA-NRCS PLANTS Database  / USDA NRCS. Wetland flora: Field office illustrated guide to plant species. USDA Natural Resources Conservation Service. - Not copyrighted image
Polygonum salicifolium Brouss. ex Willd. Ricerca immagini di Polygonum salicifolium Brouss. ex Willd. su Google
Views: 248.641

-

knotweed
Polygonum salicifolium - Hippolyte Coste - Flore descriptive et illustrée de la 
France, de la Corse et des contrées limitrophes, 1901-1906 - This image is in 
public domain because its copyright has expired.
Polygonum scandens L. Ricerca immagini di Polygonum scandens L. su Google
Views: 692.785

Vine, Forb/herb - Perennial

climbing false buckwheat
Polygonum scandens - USDA-NRCS PLANTS Database  / USDA NRCS. Wetland flora: Field office illustrated guide to plant species. USDA Natural Resources Conservation Service. - Not copyrighted image Polygonum scandens - Robert Tatina - USDA-NRCS PLANTS Database  / USDA SCS. 1989. Midwest wetland flora: Field office illustrated guide to plant species. Midwest National Technical Center, Lincoln. - Not copyrighted image
Polygonum scandens L. var. cristatum (Engelm. & A. Gray) Gleason Ricerca immagini di Polygonum scandens L. var. cristatum (Engelm. & A. Gray) Gleason su Google
Views: 290.002

Vine, Forb/herb - Perennial

climbing false buckwheat

Synonyms:
= 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 var. cristatum - USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 675.
Polygonum scandens L. var. dumetorum (L.) Gleason Ricerca immagini di Polygonum scandens L. var. dumetorum (L.) Gleason su Google
Views: 358.432

Vine, Forb/herb - Perennial

climbing false buckwheat

Synonyms:
= Bilderdykia dumetorum (L.) Dumort.
= Polygonum dumetorum L.
= Reynoutria scandens (L.) Shinners var. dumetorum (L.) Shinners
= Tiniaria dumetorum (L.) Opiz
Polygonum scandens var. dumetorum - USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 675. Polygonum scandens var. dumetorum - USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 675.
Polygonum scandens L. var. scandens Ricerca immagini di Polygonum scandens L. var. scandens su Google
Views: 242.737

Vine, Forb/herb - Perennial

climbing false buckwheat

Synonyms:
= 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 scandens var. scandens - USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 674.
Polygonum segetum Kunth Ricerca immagini di Polygonum segetum Kunth su Google
Views: 229.794

Forb/herb - Perennial

field smartweed

Synonyms:
= Persicaria segeta (Kunth) Small
Polygonum setaceum Baldw. Ricerca immagini di Polygonum setaceum Baldw. su Google
Views: 392.081

Forb/herb - Perennial

bog smartweed

Synonyms:
= Persicaria setacea (Baldw.) Small
= Persicaria setacea (Baldw.) Small var. interjecta (Fernald) C.F. Reed
= Persicaria setacea (Baldw.) Small var. tonsa (Fernald) C.F. Reed
= Polygonum hydropiperoides Michx. var. setaceum (Baldw.) Gleason
= Polygonum setaceum Baldw. var. interjectum Fernald
= Polygonum setaceum Baldw. var. tonsum Fernald
Polygonum setaceum - USDA-NRCS PLANTS Database  / USDA NRCS. Wetland flora: Field office illustrated guide to plant species. USDA Natural Resources Conservation Service. - Not copyrighted image Polygonum setaceum - USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 669.
Polygonum shastense W.H. Brewer Ricerca immagini di Polygonum shastense W.H. Brewer su Google
Views: 214.89

Subshrub, Shrub - Perennial

Shasta knotweed
Polygonum striatulum B.L. Rob. Ricerca immagini di Polygonum striatulum B.L. Rob. su Google
Views: 289.288

Subshrub, Forb/herb - Annual, Perennial

striped knotweed

Synonyms:
= Polygonum brasiliense K. Koch
= Polygonum braziliense K. Koch, orth. var.
= Polygonum camporum Meisn.
= Polygonum texense M.C. Johnst.
Polygonum tenue Michx. Ricerca immagini di Polygonum tenue Michx. su Google
Views: 223.182

Forb/herb - Annual

pleatleaf knotweed

Synonyms:
= Polygonum tenue Michx. var. protrusum Fernald
Polygonum tenue - USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 664.
Polygonum virginianum L. Ricerca immagini di Polygonum virginianum L. su Google
Views: 442.198

Forb/herb - Annual, Perennial

jumpseed

Synonyms:
= 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 virginianum - Robert H. Mohlenbrock  USDA-NRCS PLANTS Database  / USDA SCS. 1991. Southern wetland flora: Field office guide to plant species. South National Technical Center, Fort Worth. - Not copyrighted image Polygonum virginianum - USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 665. Polygonum virginianum - USDA-NRCS PLANTS Database  / USDA NRCS. Wetland flora: Field office illustrated guide to plant species. USDA Natural Resources Conservation Service. - Not copyrighted image Polygonum virginianum - Robert H. Mohlenbrock  USDA-NRCS PLANTS Database  / USDA SCS. 1991. Southern wetland flora: Field office guide to plant species. South National Technical Center, Fort Worth. - Not copyrighted image
Polygonum viviparum L. Ricerca immagini di Polygonum viviparum L. su Google
Views: 881.647

Forb/herb - Perennial

alpine bistort

Synonyms:
= Bistorta vivipara (L.) Gray
= Persicaria vivipara (L.) Ronse Decr.
= Polygonum fugax Small
= Polygonum macounii Small ex Macoun
= Polygonum viviparum L. var. alpinum Wahlenb.
= Polygonum viviparum L. var. macounii (Small ex Macoun) Hultén
Polygonum viviparum - USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 671. Polygonum viviparum - Bob Moseley - USDA-NRCS PLANTS Database  / USDA NRCS. 1992. Western wetland flora: Field office guide to plant species. West Region, Sacramento. - Not copyrighted image Polygonum viviparum - Walter Hood Fitch - Illustrations of the British Flora (1924) - Permission granted to use under GFDL by Kurt Stueber. Source: www.biolib.de - Permission is granted to copy, distribute and/or modify this image under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
A copy of the license is included in the section entitled "GNU Free Documentation License". Polygonum viviparum - USDA-NRCS PLANTS Database  / USDA NRCS. Wetland flora: Field office illustrated guide to plant species. USDA Natural Resources Conservation Service. - Not copyrighted image Polygonum viviparum - Hippolyte Coste - Flore descriptive et illustrée de la 
France, de la Corse et des contrées limitrophes, 1901-1906 - This image is in 
public domain because its copyright has expired.

More genera: Polymeridium Polymnia Polypodium Polypogon Polypremum Polyscias Polysporina Polystachya Polystichum Polytaenia Polytoca Polytrias



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