| Polygonum acre Kunth | Persicaria punctata (Elliott) Small | | | Polygonum acreKunth | Persicaria punctata(Elliott) Small |
| Polygonum affine D. Don | Bistorta affinis (D. Don) Greene | | | Polygonum affineD. Don | Bistorta affinis(D. Don) Greene |
| Polygonum alpinum All. | Koenigia alpina (All.) T. M. Schust. & Reveal | | | Polygonum alpinumAll. | Koenigia alpina(All.) T. M. Schust. & Reveal |
| Polygonum amplexicaule D. Don | Bistorta amplexicaulis (D. Don) Greene | | | Polygonum amplexicauleD. Don | Bistorta amplexicaulis(D. Don) Greene |
| Polygonum amplexicaule D. Don var. speciosum Hook. f. | Bistorta amplexicaulis (D. Don) Greene | | i | Polygonum amplexicauleD. Don var.speciosum Hook. f. | Bistorta amplexicaulis(D. Don) Greene |
| Polygonum aubertii L. Henry | Fallopia baldschuanica (Regel) Holub | | | Polygonum aubertiiL. Henry | Fallopia baldschuanica(Regel) Holub |
| Polygonum aviculare L. | | a | | Polygonum aviculareL. | |
| Polygonum baldschuanicum Regel | Fallopia baldschuanica (Regel) Holub | | | Polygonum baldschuanicumRegel | Fallopia baldschuanica(Regel) Holub |
| Polygonum bistorta L. | Bistorta officinalis Delarbre | | | Polygonum bistortaL. | Bistorta officinalisDelarbre |
| Polygonum bistortoides Pursh | Bistorta bistortoides (Pursh) Small | | | Polygonum bistortoidesPursh | Bistorta bistortoides(Pursh) Small |
| Polygonum bucharicum Grig. | Koenigia coriaria (Grig.) T. M. Schust. & Reveal | | | Polygonum bucharicumGrig. | Koenigia coriaria(Grig.) T. M. Schust. & Reveal |
| Polygonum calostachyum Diels | Bistorta griffithii (Hook. f.) Grierson | | | Polygonum calostachyumDiels | Bistorta griffithii(Hook. f.) Grierson |
| Polygonum campanulatum Hook. f. | Koenigia campanulata (Hook. f.) T. M. Schust. & Reveal | | | Polygonum campanulatumHook. f. | Koenigia campanulata(Hook. f.) T. M. Schust. & Reveal |
| Polygonum capitatum Buch.-Ham. ex D. Don | Persicaria capitata (Buch.-Ham. ex D. Don) H. Gross | | | Polygonum capitatumBuch.-Ham. ex D. Don | Persicaria capitata(Buch.-Ham. ex D. Don) H. Gross |
| Polygonum chinense L. | Persicaria chinensis (L.) H. Gross | | | Polygonum chinenseL. | Persicaria chinensis(L.) H. Gross |
| Polygonum convolvulus L. | Fallopia convolvulus (L.) Á. Löve | | | Polygonum convolvulusL. | Fallopia convolvulus(L.) Á. Löve |
| Polygonum cymosum Trevir. | Fagopyrum cymosum (Trevir.) Meisn. | | | Polygonum cymosumTrevir. | Fagopyrum cymosum(Trevir.) Meisn. |
| Polygonum divaricatum L. | Koenigia divaricata (L.) T. M. Schust. & Reveal | | | Polygonum divaricatumL. | Koenigia divaricata(L.) T. M. Schust. & Reveal |
| Polygonum dumetorum L. | Fallopia dumetorum (L.) Holub | | | Polygonum dumetorumL. | Fallopia dumetorum(L.) Holub |
| Polygonum ellipticum Willd. ex Spreng. | Bistorta elliptica (Willd. ex Spreng.) Kom. | | | Polygonum ellipticumWilld. ex Spreng. | Bistorta elliptica(Willd. ex Spreng.) Kom. |
| Polygonum emodi Meisn. | Bistorta emodi (Meisn.) H. Hara | | | Polygonum emodiMeisn. | Bistorta emodi(Meisn.) H. Hara |
| Polygonum ephedroides Hook. f. | Muehlenbeckia ephedroides (Hook. f.) Hook. f. | | | Polygonum ephedroidesHook. f. | Muehlenbeckia ephedroides(Hook. f.) Hook. f. |
| Polygonum equisetiforme Sm. | | a | | Polygonum equisetiformeSm. | |
| Polygonum filiforme Thunb. | Persicaria filiformis (Thunb.) Nakai | | | Polygonum filiformeThunb. | Persicaria filiformis(Thunb.) Nakai |
| Polygonum forrestii Diels | Koenigia forrestii (Diels) Mesícek & Soják | | | Polygonum forrestiiDiels | Koenigia forrestii(Diels) Mesícek & Soják |
| Polygonum frutescens L. | Atraphaxis frutescens (L.) Eversm. | | | Polygonum frutescensL. | Atraphaxis frutescens(L.) Eversm. |
| Polygonum hydropiperoides Michx. | Persicaria hydropiperoides (Michx.) Small | | | Polygonum hydropiperoidesMichx. | Persicaria hydropiperoides(Michx.) Small |
| Polygonum lichiangense W. W. Sm. | Koenigia lichiangensis (W. W. Sm.) T. M. Schust. & Reveal | | | Polygonum lichiangenseW. W. Sm. | Koenigia lichiangensis(W. W. Sm.) T. M. Schust. & Reveal |
| Polygonum molle D. Don | Koenigia mollis (D. Don) T. M. Schust. & Reveal | | | Polygonum molleD. Don | Koenigia mollis(D. Don) T. M. Schust. & Reveal |
| Polygonum orientale L. | Persicaria orientalis (L.) Spach | | | Polygonum orientaleL. | Persicaria orientalis(L.) Spach |
| Polygonum paleaceum Wall. ex Hook. f. | Bistorta confusa (Meisn.) Greene | | | Polygonum paleaceumWall. ex Hook. f. | Bistorta confusa(Meisn.) Greene |
| Polygonum perfoliatum L. | Persicaria perfoliata (L.) H. Gross | | | Polygonum perfoliatumL. | Persicaria perfoliata(L.) H. Gross |
| Polygonum persicaria L. | Persicaria maculosa Gray | | | Polygonum persicariaL. | Persicaria maculosaGray |
| Polygonum platycladum F. Muell. | Muehlenbeckia platyclada (F. Muell.) Meisn. | | | Polygonum platycladumF. Muell. | Muehlenbeckia platyclada(F. Muell.) Meisn. |
| Polygonum polystachyum Wall. ex Meisn. | Koenigia polystachya (Wall. ex Meisn.) T. M. Schust. & Reveal | | | Polygonum polystachyumWall. ex Meisn. | Koenigia polystachya(Wall. ex Meisn.) T. M. Schust. & Reveal |
| Polygonum pterocarpum Wall. ex Meisn. | Fallopia pterocarpa (Wall. ex Meisn.) Holub | | | Polygonum pterocarpumWall. ex Meisn. | Fallopia pterocarpa(Wall. ex Meisn.) Holub |
| Polygonum punctatum Elliott | Persicaria punctata (Elliott) Small | | | Polygonum punctatumElliott | Persicaria punctata(Elliott) Small |
| Polygonum reynoutria Makino | Reynoutria japonica Houtt. | | | Polygonum reynoutriaMakino | Reynoutria japonicaHoutt. |
| Polygonum rivulare K. D. Koenig ex Roxb. | Persicaria barbata (L.) H. Hara | | | Polygonum rivulareK. D. Koenig ex Roxb. | Persicaria barbata(L.) H. Hara |
| Polygonum roettleri Roth | Persicaria pubescens (Blume) H. Hara | | | Polygonum roettleriRoth | Persicaria pubescens(Blume) H. Hara |
| Polygonum sachalinense F. Schmidt | Reynoutria sachalinensis (F. Schmidt) Nakai | | | Polygonum sachalinenseF. Schmidt | Reynoutria sachalinensis(F. Schmidt) Nakai |
| Polygonum sagittatum L. | Persicaria sagittata (L.) H. Gross | | | Polygonum sagittatumL. | Persicaria sagittata(L.) H. Gross |
| Polygonum scandens L. | Fallopia scandens (L.) Holub | | | Polygonum scandensL. | Fallopia scandens(L.) Holub |
| Polygonum songaricum Schrenk ex Fisch. & C. A. Mey. | Koenigia songarica (Schrenk ex Fisch. & C. A. Mey.) T. M. Schust. & Reveal | | | Polygonum songaricumSchrenk ex Fisch. & C. A. Mey. | Koenigia songarica(Schrenk ex Fisch. & C. A. Mey.) T. M. Schust. & Reveal |
| Polygonum sphaerostachyum Meisn. | Bistorta macrophylla (D. Don) Soják | | | Polygonum sphaerostachyumMeisn. | Bistorta macrophylla(D. Don) Soják |
| Polygonum tataricum L. | Fagopyrum tataricum (L.) Gaertn. | | | Polygonum tataricumL. | Fagopyrum tataricum(L.) Gaertn. |
| Polygonum tinctorium Aiton | Persicaria tinctoria (Aiton) Spach | | | Polygonum tinctoriumAiton | Persicaria tinctoria(Aiton) Spach |
| Polygonum tortuosum D. Don | Koenigia tortuosa (D. Don) T. M. Schust. & Reveal | | | Polygonum tortuosumD. Don | Koenigia tortuosa(D. Don) T. M. Schust. & Reveal |
| Polygonum vacciniifolium Wall. ex Meisn. | Bistorta vacciniifolia (Wall. ex Meisn.) Greene | | | Polygonum vacciniifoliumWall. ex Meisn. | Bistorta vacciniifolia(Wall. ex Meisn.) Greene |
| Polygonum virginianum L. | Persicaria virginiana (L.) Gaertn. | | | Polygonum virginianumL. | Persicaria virginiana(L.) Gaertn. |
| Polygonum viviparum L. | Bistorta vivipara (L.) Delarbre | | | Polygonum viviparumL. | Bistorta vivipara(L.) Delarbre |
| Polygonum weyrichii F. Schmidt | Koenigia weyrichii (F. Schmidt) T. M. Schust. & Reveal | | | Polygonum weyrichiiF. Schmidt | Koenigia weyrichii(F. Schmidt) T. M. Schust. & Reveal |
| Polygonum spp. | | a | | Polygonum spp. | |
| Polygonum amphibium L. var. emersum Michx. | Persicaria amphibia (L.) Delarbre | | i | Polygonum amphibiumL. var.emersum Michx. | Persicaria amphibia(L.) Delarbre |
| Polygonum argyrocoleon Steud. ex Kunze | | a | | Polygonum argyrocoleonSteud. ex Kunze | |
| Polygonum bungeanum Turcz. | Persicaria bungeana (Turcz.) Nakai | | | Polygonum bungeanumTurcz. | Persicaria bungeana(Turcz.) Nakai |
| Polygonum cuspidatum Siebold & Zucc. | Reynoutria japonica Houtt. | | | Polygonum cuspidatumSiebold & Zucc. | Reynoutria japonicaHoutt. |
| Polygonum hydropiper L. | Persicaria hydropiper (L.) Delarbre | | | Polygonum hydropiperL. | Persicaria hydropiper(L.) Delarbre |
| Polygonum lapathifolium L. | Persicaria lapathifolia (L.) Delarbre | | | Polygonum lapathifoliumL. | Persicaria lapathifolia(L.) Delarbre |
| Polygonum pensylvanicum L. | Persicaria pensylvanica (L.) M. Gómez | | | Polygonum pensylvanicumL. | Persicaria pensylvanica(L.) M. Gómez |
| Polygonum ramosissimum Michx. | | a | | Polygonum ramosissimumMichx. | |
| Polygonum polygaloides Meisn. subsp. kelloggii (Greene) J. C. Hickman | | a | i | Polygonum polygaloidesMeisn. subsp. kelloggii (Greene) J. C. Hickman | |
| Polygonum coccineum Muhl. ex Willd. | Persicaria amphibia (L.) Delarbre | | | Polygonum coccineumMuhl. ex Willd. | Persicaria amphibia(L.) Delarbre |
| Polygonum kelloggii Greene | Polygonum polygaloides Meisn. subsp. kelloggii (Greene) J. C. Hickman | | | Polygonum kelloggiiGreene | Polygonum polygaloidesMeisn. subsp. kelloggii (Greene) J. C. Hickman |
| Polygonum amphibium L. | Persicaria amphibia (L.) Delarbre | | | Polygonum amphibiumL. | Persicaria amphibia(L.) Delarbre |
| Polygonum cespitosum Blume | Persicaria posumbu (Buch.-Ham. ex D. Don) H. Gross | | | Polygonum cespitosumBlume | Persicaria posumbu(Buch.-Ham. ex D. Don) H. Gross |
| Polygonum cespitosum Blume var. longisetum (Bruijn) A. Stewart | Persicaria longiseta (Bruijn) Kitag. | | i | Polygonum cespitosumBlume var.longisetum (Bruijn) A. Stewart | Persicaria longiseta(Bruijn) Kitag. |
| Polygonum erectum L. | | a | | Polygonum erectumL. | |
| Polygonum heterophyllum Lindm. | Polygonum aviculare L. subsp. aviculare | | | Polygonum heterophyllumLindm. | Polygonum aviculareL. subsp. aviculare |
| Polygonum salicifolium Brouss. ex Willd. | Persicaria decipiens (R. Br.) K. L. Wilson | | | Polygonum salicifoliumBrouss. ex Willd. | Persicaria decipiens(R. Br.) K. L. Wilson |
| Polygonum senegalense Meisn. | Persicaria senegalensis (Meisn.) Soják | | | Polygonum senegalenseMeisn. | Persicaria senegalensis(Meisn.) Soják |
| Polygonum multiflorum Thunb. | Reynoutria multiflora (Thunb.) Moldenke | | | Polygonum multiflorumThunb. | Reynoutria multiflora(Thunb.) Moldenke |
| Polygonum odoratum Lour. | Persicaria odorata (Lour.) Soják | | | Polygonum odoratumLour. | Persicaria odorata(Lour.) Soják |
| Polygonum decipiens R. Br. | Persicaria decipiens (R. Br.) K. L. Wilson | | | Polygonum decipiensR. Br. | Persicaria decipiens(R. Br.) K. L. Wilson |
| Polygonum cuspidatum Siebold & Zucc. var. compactum (Hook. f.) L. H. Bailey | Reynoutria japonica Houtt. | | i | Polygonum cuspidatumSiebold & Zucc. var.compactum (Hook. f.) L. H. Bailey | Reynoutria japonicaHoutt. |
| Polygonum hickmanii H. R. Hinds & Rand. Morgan | | a | | Polygonum hickmaniiH. R. Hinds & Rand. Morgan | |
| Polygonum dichotomum Blume | Persicaria dichotoma (Blume) Masam. | | | Polygonum dichotomumBlume | Persicaria dichotoma(Blume) Masam. |
| Polygonum minus Huds. | Persicaria minor (Huds.) Opiz | | | Polygonum minusHuds. | Persicaria minor(Huds.) Opiz |
| Polygonum glabrum Willd. | Persicaria glabra (Willd.) M. Gómez | | | Polygonum glabrumWilld. | Persicaria glabra(Willd.) M. Gómez |
| Polygonum densiflorum Meisn. | Persicaria glabra (Willd.) M. Gómez | | | Polygonum densiflorumMeisn. | Persicaria glabra(Willd.) M. Gómez |
| Polygonum complexum A. Cunn. | Muehlenbeckia complexa (A. Cunn.) Meisn. | | | Polygonum complexumA. Cunn. | Muehlenbeckia complexa(A. Cunn.) Meisn. |
| Polygonum polygaloides Meisn. | | a | | Polygonum polygaloidesMeisn. | |
| Polygonum polygaloides Meisn. subsp. polygaloides | | a | i | Polygonum polygaloidesMeisn. subsp. polygaloides | |
| Polygonum longisetum Bruijn | Persicaria longiseta (Bruijn) Kitag. | | | Polygonum longisetumBruijn | Persicaria longiseta(Bruijn) Kitag. |
| Polygonum coriarium Grig. | Koenigia coriaria (Grig.) T. M. Schust. & Reveal | | | Polygonum coriariumGrig. | Koenigia coriaria(Grig.) T. M. Schust. & Reveal |
| Polygonum macrophyllum D. Don | Bistorta macrophylla (D. Don) Soják | | | Polygonum macrophyllumD. Don | Bistorta macrophylla(D. Don) Soják |
| Polygonum griffithii Hook. f. | Bistorta griffithii (Hook. f.) Grierson | | | Polygonum griffithiiHook. f. | Bistorta griffithii(Hook. f.) Grierson |
| Polygonum posumbu Buch.-Ham. ex D. Don | Persicaria posumbu (Buch.-Ham. ex D. Don) H. Gross | | | Polygonum posumbuBuch.-Ham. ex D. Don | Persicaria posumbu(Buch.-Ham. ex D. Don) H. Gross |
| Polygonum dibotrys D. Don | Fagopyrum cymosum (Trevir.) Meisn. | | | Polygonum dibotrysD. Don | Fagopyrum cymosum(Trevir.) Meisn. |
| Polygonum virginianum L. var. filiforme (Thunb.) Nakai | Persicaria filiformis (Thunb.) Nakai | | i | Polygonum virginianumL. var.filiforme (Thunb.) Nakai | Persicaria filiformis(Thunb.) Nakai |
| Polygonum pubescens Blume | Persicaria pubescens (Blume) H. Hara | | | Polygonum pubescensBlume | Persicaria pubescens(Blume) H. Hara |
| Polygonum flaccidum auct. | Persicaria pubescens (Blume) H. Hara | | | Polygonum flaccidumauct. | Persicaria pubescens(Blume) H. Hara |
| Polygonum barbatum L. | Persicaria barbata (L.) H. Hara | | | Polygonum barbatumL. | Persicaria barbata(L.) H. Hara |
| Polygonum fagopyrum L. | Fagopyrum esculentum Moench | | | Polygonum fagopyrumL. | Fagopyrum esculentumMoench |
| Polygonum nepalense Meisn. | Persicaria nepalensis (Meisn.) H. Gross | | | Polygonum nepalenseMeisn. | Persicaria nepalensis(Meisn.) H. Gross |
| Polygonum segetum Kunth | | a | | Polygonum segetumKunth | |
| Polygonum senticosum (Meisn.) Franch. & Sav. | Persicaria senticosa (Meisn.) H. Gross | | | Polygonum senticosum(Meisn.) Franch. & Sav. | Persicaria senticosa(Meisn.) H. Gross |
| Polygonum douglasii Greene | | a | | Polygonum douglasiiGreene | |
| Polygonum alpinum All. unranked alaskanum Small | Koenigia alaskana (Small) T. M. Schust. & Reveal var. alaskana | | i | Polygonum alpinumAll. unranked alaskanum Small | Koenigia alaskana(Small) T. M. Schust. & Reveal var.alaskana |
| Polygonum alaskanum (Small) W. Wight ex Harshb. | Koenigia alaskana (Small) T. M. Schust. & Reveal var. alaskana | | | Polygonum alaskanum(Small) W. Wight ex Harshb. | Koenigia alaskana(Small) T. M. Schust. & Reveal var.alaskana |
| Polygonum alaskanum (Small) W. Wight ex Harshb. var. glabrescens Hultén | Koenigia alaskana (Small) T. M. Schust. & Reveal var. glabrescens (Hultén) T. M. Schust. & Reveal | | i | Polygonum alaskanum(Small) W. Wight ex Harshb. var.glabrescens Hultén | Koenigia alaskana(Small) T. M. Schust. & Reveal var.glabrescens (Hultén) T. M. Schust. & Reveal |
| Polygonum aviculare L. subsp. aviculare | | a | i | Polygonum aviculareL. subsp. aviculare | |
| Polygonum aviculare L. subsp. boreale (Lange) Karlsson | | a | i | Polygonum aviculareL. subsp. boreale (Lange) Karlsson | |
| Polygonum boreale (Lange) Small | Polygonum aviculare L. subsp. boreale (Lange) Karlsson | | | Polygonum boreale(Lange) Small | Polygonum aviculareL. subsp. boreale (Lange) Karlsson |
| Polygonum aviculare L. var. boreale Lange | Polygonum aviculare L. subsp. boreale (Lange) Karlsson | | i | Polygonum aviculareL. var.boreale Lange | Polygonum aviculareL. subsp. boreale (Lange) Karlsson |
| Polygonum aviculare L. subsp. buxiforme (Small) Costea & Tardif | | a | i | Polygonum aviculareL. subsp. buxiforme (Small) Costea & Tardif | |
| Polygonum aviculare L. subsp. neglectum (Besser) Arcang. | | a | i | Polygonum aviculareL. subsp. neglectum (Besser) Arcang. | |
| Polygonum buxiforme Small | Polygonum aviculare L. subsp. buxiforme (Small) Costea & Tardif | | | Polygonum buxiformeSmall | Polygonum aviculareL. subsp. buxiforme (Small) Costea & Tardif |
| Polygonum neglectum Besser | Polygonum aviculare L. subsp. neglectum (Besser) Arcang. | | | Polygonum neglectumBesser | Polygonum aviculareL. subsp. neglectum (Besser) Arcang. |
| Polygonum aviculare L. subsp. depressum (Meisn.) Arcang. | Polygonum arenastrum Boreau | | i | Polygonum aviculareL. subsp. depressum (Meisn.) Arcang. | Polygonum arenastrumBoreau |
| Polygonum aviculare L. var. depressum Meisn. | Polygonum arenastrum Boreau | | i | Polygonum aviculareL. var.depressum Meisn. | Polygonum arenastrumBoreau |
| Polygonum arenastrum Boreau | | a | | Polygonum arenastrumBoreau | |
| Polygonum calcatum Lindm. | Polygonum arenastrum Boreau | | | Polygonum calcatumLindm. | Polygonum arenastrumBoreau |
| Polygonum careyi Olney | Persicaria careyi (Olney) Greene | | | Polygonum careyiOlney | Persicaria careyi(Olney) Greene |
| Polygonum denticulatum C. C. Huang | Pteroxygonum denticulatum (C. C. Huang) T. M. Schust. & Reveal | | | Polygonum denticulatumC. C. Huang | Pteroxygonum denticulatum(C. C. Huang) T. M. Schust. & Reveal |
| Polygonum paronychia Cham. & Schltdl. | | a | | Polygonum paronychiaCham. & Schltdl. | |
| Polygonum thunbergii Siebold & Zucc. | Persicaria thunbergii (Siebold & Zucc.) H. Gross | | | Polygonum thunbergiiSiebold & Zucc. | Persicaria thunbergii(Siebold & Zucc.) H. Gross |
| Polygonum alpinum All. var. lapathifolium Cham. & Schltdl. | Koenigia alaskana (Small) T. M. Schust. & Reveal var. alaskana | | i | Polygonum alpinumAll. var.lapathifolium Cham. & Schltdl. | Koenigia alaskana(Small) T. M. Schust. & Reveal var.alaskana |
| Polygonum acutatum Lehm. | Fagopyrum cymosum (Trevir.) Meisn. | | | Polygonum acutatumLehm. | Fagopyrum cymosum(Trevir.) Meisn. |
| Polygonum tamnifolium Kunth | Muehlenbeckia tamnifolia (Kunth) Meisn. | | | Polygonum tamnifoliumKunth | Muehlenbeckia tamnifolia(Kunth) Meisn. |
| Polygonum compactum Hook. f. | Reynoutria compacta (Hook. f.) Nakai | | | Polygonum compactumHook. f. | Reynoutria compacta(Hook. f.) Nakai |
| Polygonum extremiorientalis Vorosch. | Persicaria extremiorientalis (Vorosch.) Tzvelev | | | Polygonum extremiorientalisVorosch. | Persicaria extremiorientalis(Vorosch.) Tzvelev |
| Polygonum microcephalum D. Don | Persicaria microcephala (D. Don) H. Gross | | | Polygonum microcephalumD. Don | Persicaria microcephala(D. Don) H. Gross |
| Polygonum alatum (Buch.-Ham. ex D. Don) Spreng. | Persicaria nepalensis (Meisn.) H. Gross | | | Polygonum alatum(Buch.-Ham. ex D. Don) Spreng. | Persicaria nepalensis(Meisn.) H. Gross |
| Polygonum scoparium Req. ex Loisel. | | a | | Polygonum scopariumReq. ex Loisel. | |
| Polygonum axillare Hook. f. | Muehlenbeckia axillaris (Hook. f.) Walp. | | | Polygonum axillareHook. f. | Muehlenbeckia axillaris(Hook. f.) Walp. |
| Polygonum jucundum Meisn. | | a | | Polygonum jucundumMeisn. | |
| Polygonum urophyllum Bureau & Franch. | Fagopyrum urophyllum (Bureau & Franch.) H. Gross | | | Polygonum urophyllumBureau & Franch. | Fagopyrum urophyllum(Bureau & Franch.) H. Gross |
| Polygonum ×bohemicum (Chrtek & Chrtková) Zika & Jacobson | Reynoutria ×bohemica Chrtek & Chrtková | | | Polygonum bohemicum(Chrtek & Chrtková) Zika & Jacobson | Reynoutria bohemicaChrtek & Chrtková |
| Polygonum carneum K. Koch | Bistorta carnea (K. Koch) Kom. ex Tzvelev | | | Polygonum carneumK. Koch | Bistorta carnea(K. Koch) Kom. ex Tzvelev |
| Polygonum cespitosum Blume var. cespitosum | Persicaria posumbu (Buch.-Ham. ex D. Don) H. Gross | | i | Polygonum cespitosumBlume var.cespitosum | Persicaria posumbu(Buch.-Ham. ex D. Don) H. Gross |
| Polygonum convolvulus L. var. convolvulus | Fallopia convolvulus (L.) Á. Löve | | i | Polygonum convolvulusL. var.convolvulus | Fallopia convolvulus(L.) Á. Löve |
| Polygonum convolvulus L. var. cilinode (Michx.) Alph. Wood | Fallopia cilinodis (Michx.) Holub | | i | Polygonum convolvulusL. var.cilinode (Michx.) Alph. Wood | Fallopia cilinodis(Michx.) Holub |
| Polygonum cilinode Michx. | Fallopia cilinodis (Michx.) Holub | | | Polygonum cilinodeMichx. | Fallopia cilinodis(Michx.) Holub |
| Polygonum cuspidatum Siebold & Zucc. var. cuspidatum | Reynoutria japonica Houtt. | | i | Polygonum cuspidatumSiebold & Zucc. var.cuspidatum | Reynoutria japonicaHoutt. |
| Polygonum alaskanum (Small) W. Wight ex Harshb. var. alaskanum | Koenigia alaskana (Small) T. M. Schust. & Reveal var. alaskana | | i | Polygonum alaskanum(Small) W. Wight ex Harshb. var.alaskanum | Koenigia alaskana(Small) T. M. Schust. & Reveal var.alaskana |
| Polygonum alpinum All. var. alpinum | Koenigia alaskana (Small) T. M. Schust. & Reveal var. alaskana | | i | Polygonum alpinumAll. var.alpinum | Koenigia alaskana(Small) T. M. Schust. & Reveal var.alaskana |
| Polygonum amplexicaule D. Don var. amplexicaule | Bistorta amplexicaulis (D. Don) Greene | | i | Polygonum amplexicauleD. Don var.amplexicaule | Bistorta amplexicaulis(D. Don) Greene |
| Polygonum amphibium L. var. amphibium | Persicaria amphibia (L.) Delarbre | | i | Polygonum amphibiumL. var.amphibium | Persicaria amphibia(L.) Delarbre |
| Polygonum aviculare L. var. aviculare | Polygonum aviculare L. subsp. aviculare | | i | Polygonum aviculareL. var.aviculare | Polygonum aviculareL. subsp. aviculare |
| Polygonum oxyspermum C. A. Mey. & Bunge | | a | | Polygonum oxyspermumC. A. Mey. & Bunge | |
| Polygonum statice H. Lév. | Fagopyrum statice (H. Lév.) H. Gross | | | Polygonum staticeH. Lév. | Fagopyrum statice(H. Lév.) H. Gross |
| Polygonum uvifera L. | Coccoloba uvifera (L.) L. | | | Polygonum uviferaL. | Coccoloba uvifera(L.) L. |
| Polygonum confusum Meisn. | Bistorta confusa (Meisn.) Greene | | | Polygonum confusumMeisn. | Bistorta confusa(Meisn.) Greene |
| Polygonum scabrum Moench | Persicaria lapathifolia (L.) Delarbre | | | Polygonum scabrumMoench | Persicaria lapathifolia(L.) Delarbre |
| Polygonum prolificum (Small) B. L. Rob. | Polygonum ramosissimum Michx. subsp. prolificum (Small) Costea & Tardif | | | Polygonum prolificum(Small) B. L. Rob. | Polygonum ramosissimumMichx. subsp. prolificum (Small) Costea & Tardif |
| Polygonum achoreum S. F. Blake | | a | | Polygonum achoreumS. F. Blake | |
| Polygonum ramosissimum Michx. subsp. prolificum (Small) Costea & Tardif | | a | i | Polygonum ramosissimumMichx. subsp. prolificum (Small) Costea & Tardif | |
| Polygonum ramosissimum Michx. var. prolificum Small | Polygonum ramosissimum Michx. subsp. prolificum (Small) Costea & Tardif | | i | Polygonum ramosissimumMichx. var.prolificum Small | Polygonum ramosissimumMichx. subsp. prolificum (Small) Costea & Tardif |
| Polygonum ramosissimum Michx. var. ramosissimum | Polygonum ramosissimum Michx. subsp. ramosissimum | | i | Polygonum ramosissimumMichx. var.ramosissimum | Polygonum ramosissimumMichx. subsp. ramosissimum |
| Polygonum ramosissimum Michx. subsp. ramosissimum | | a | i | Polygonum ramosissimumMichx. subsp. ramosissimum | |
| Polygonum virginianum L. var. virginianum | Persicaria virginiana (L.) Gaertn. | | i | Polygonum virginianumL. var.virginianum | Persicaria virginiana(L.) Gaertn. |