The Plant List — A working list for all plant species

⚠ Version 1 of The Plant List has been superseded.

You should refer instead to the current version of The Plant List.

Results

No plant names match your search for Polygonum pleianthum; we will try Polygonum instead.

1683 plant name records match your search criteria Polygonum. The results are below.

• Genus Polygonum is in the family Polygonaceae. Species epithets begin with: A B C D E F G H I J K L M N O P Q R S T U V W Y Z

The results can also be downloaded as a CSV file.

See "Status", "Confidence level", "Source" for definitions.

Name	Status	Confi­dence level	Source
Polygonum abbreviatum Kom.	Accepted		TRO
Polygonum aboriginum (Greene) Fedde	Unresolved		WCSP (in review)
Polygonum abscissum (Greene) Fedde	Unresolved		WCSP (in review)
Polygonum abyssinicum A.Rich.	Unresolved		WCSP (in review)
Polygonum acadiense Fernald	Synonym		TRO
Polygonum acanthophyllum Lindau	Synonym		TRO
Polygonum acaule Hook. f.	Synonym		TRO
Polygonum acaule Boiss.	Synonym		TRO
Polygonum acerosum Ledeb. ex Meisn.	Accepted		TRO
Polygonum acetosaefolium Vent.	Synonym		TRO
Polygonum acetosellum Klokov [Invalid]	Synonym		WCSP (in review)
Polygonum acetosum M.Bieb.	Accepted		WCSP (in review)
Polygonum achoreum S.F. Blake	Accepted		TRO
Polygonum acidulum Willd.	Synonym		TRO
Polygonum acidum Willd. ex Meisn.	Unresolved		WCSP (in review)
Polygonum acidum Pall.	Unresolved		WCSP (in review)
Polygonum acre Kunth [Illegitimate]	Synonym		WCSP (in review)
Polygonum acre Lam.	Synonym		TRO
Polygonum acre var. aquatile Meisner in Martius	Synonym		TRO
Polygonum acre var. brachystachyum Meisn.	Synonym		TRO
Polygonum acre var. confertiflorum Meisn.	Synonym		TRO
Polygonum acre var. leptostachyum Meisn.	Synonym		TRO
Polygonum acre var. majus Meisn.	Synonym		TRO
Polygonum acre var. riparium Meisn.	Synonym		TRO
Polygonum acuminatum Kunth	Synonym		WCSP (in review)
Polygonum acuminatum var. brachystemon Meisn.	Synonym		TRO
Polygonum acuminatum var. capense Meisn.	Synonym		TRO
Polygonum acuminatum var. glabrescens Meisn.	Synonym		TRO
Polygonum acuminatum var. humboldtii Meisn.	Synonym		TRO
Polygonum acuminatum var. microstemon Meisn.	Synonym		TRO
Polygonum acuminatum var. setigerum Meisn.	Synonym		TRO
Polygonum acuminatum var. subcordatum Meisn.	Synonym		TRO
Polygonum acuminatum var. weddellii Meisn.	Synonym		TRO
Polygonum acutatum Lehm.	Synonym		WCSP (in review)
Polygonum acutifolium Schur	Unresolved		WCSP (in review)
Polygonum adenophorum Spreng.	Unresolved		WCSP (in review)
Polygonum adenophyllum Cham. & Schltdl.	Unresolved		WCSP (in review)
Polygonum adenopodum Sam.	Synonym		TRO
Polygonum adenotrichum Griff.	Unresolved		WCSP (in review)
Polygonum adoense Gand.	Unresolved		WCSP (in review)
Polygonum adpressum R.Br.	Unresolved		WCSP (in review)
Polygonum adpressum Labill.	Unresolved		WCSP (in review)
Polygonum aequale Lindm.	Synonym		WCSP (in review)
Polygonum aequale subsp. oedocarpum Lindm.	Synonym		TRO
Polygonum aestivum (Ohki) Makino	Unresolved		WCSP (in review)
Polygonum affine D. Don	Accepted		TRO
Polygonum afghanicum Meisn.	Unresolved		WCSP (in review)
Polygonum afromontanum Greenway	Unresolved		WCSP (in review)
Polygonum afyonicum Leblebici & Gemici	Unresolved		WCSP (in review)
Polygonum agreste SUMNER	Synonym		TRO
Polygonum agrestinum Jord. ex Boreau	Synonym		TRO
Polygonum ajanense (Regel & Tiling) Grig.	Accepted		TRO
Polygonum akakiense Cufod.	Unresolved		WCSP (in review)
Polygonum alaskanum (Small) W. Wight ex Hultén	Synonym		TRO
Polygonum alaskanum var. glabrescens Hultén	Synonym		TRO
Polygonum alaskanum subsp. hultenianum Jurtzev	Synonym		TRO
Polygonum alatum Buch.-Ham. ex D. Don	Synonym		TRO
Polygonum alatum var. nepalense (Meisn.) Hook. f.	Synonym		TRO
Polygonum albanicum Jáv.	Accepted		WCSP (in review)
Polygonum aleppicum Boiss. & Hausskn.	Unresolved		WCSP (in review)
Polygonum alfredi Pilg.	Synonym		TRO
Polygonum alismaefolium Fedde	Unresolved		TRO
Polygonum allocarpum S.F. Blake	Synonym		TRO
Polygonum alopecuroides Turcz. ex Meissn.	Unresolved		TRO
Polygonum alopecuroides Turcz. ex Besser	Accepted		TRO
Polygonum alopecuroides var. attenuatum Serg.	Synonym		TRO
Polygonum alopecuroides f. pilosum C.F. Fang	Synonym		TRO
Polygonum alpestre C.A.Mey.	Synonym		WCSP (in review)
Polygonum alpinum All.	Synonym		WCSP (in review)
Polygonum alpinum subsp. alaskanum (Small) S.L. Welsh	Synonym		TRO
Polygonum alpinum var. alaskanum Small	Synonym		TRO
Polygonum alpinum var. angustissimum Turcz.	Synonym		TRO
Polygonum alpinum var. foliosum (R. Keller) Small	Unresolved		TRO
Polygonum alpinum var. lapathifolium Cham. & Schltdl.	Synonym		TRO
Polygonum alpinum var. sinicum Dammer ex Diels	Synonym		TRO
Polygonum altissimum Moench	Unresolved		WCSP (in review)
Polygonum ambiguum Meisn.	Synonym		TRO
Polygonum amblyophyllum (H.Hara) Kitam.	Unresolved		WCSP (in review)
Polygonum amboanum Fedde	Unresolved		WCSP (in review)
Polygonum amgense Michaleva & Perf.	Accepted		TRO
Polygonum ammanioides Jaub. & Spach	Synonym		TRO
Polygonum ammannoides Jaub. & Spach	Unresolved		WCSP (in review)
Polygonum ammophilum (Greene) Fedde	Unresolved		WCSP (in review)
Polygonum amoenum Blume	Synonym		TRO
Polygonum amphibium L.	Synonym		WCSP (in review)
Polygonum amphibium subsp. amurense Hultén	Synonym		TRO
Polygonum amphibium var. amurense Korsh.	Synonym		TRO
Polygonum amphibium var. emersum Michx.	Synonym		TRO
Polygonum amphibium f. fluitans (Eaton) Fernald	Synonym		TRO
Polygonum amphibium var. hartwrightii (A. Gray) Bissell	Synonym		TRO
Polygonum amphibium f. hartwrightii (A. Gray) S.F. Blake	Synonym		TRO
Polygonum amphibium f. hirtuosum Farw.	Synonym		TRO
Polygonum amphibium subsp. laevimarginatum Hultén	Synonym		TRO
Polygonum amphibium var. muehlenbergii Meisn.	Synonym		TRO
Polygonum amphibium var. natans Michx.	Synonym		TRO
Polygonum amphibium f. natans (Moench) Stanford	Unresolved		TRO
Polygonum amphibium var. natans Moench	Synonym		TRO
Polygonum amphibium var. natans Leyss.	Synonym		TRO
Polygonum amphibium var. stipulaceum N. Coleman	Synonym		TRO
Polygonum amphibium f. terrestre (Leers) S.F. Blake	Unresolved		TRO
Polygonum amphibium var. terrestre Leers	Synonym		TRO
Polygonum amphibium var. terrestre Leyss.	Synonym		TRO
Polygonum amphibium var. vestitum Hemsl.	Synonym		TRO
Polygonum amplexicaule D.Don	Synonym		WCSP (in review)
Polygonum amplexicaule var. amplexicaule	Unresolved		TRO
Polygonum amplexicaule var. speciosum (Meisn.) Hook. f.	Synonym		TRO
Polygonum ampliusculum Gand.	Unresolved		WCSP (in review)
Polygonum amurense Vorosch.	Accepted		TRO
Polygonum amurense Nieuwl.	Synonym		TRO
Polygonum anacampseros L.	Unresolved		TRO
Polygonum andrzejowskianum Klokov	Synonym		WCSP (in review)
Polygonum anguillanum Koidz.	Unresolved		WCSP (in review)
Polygonum angustifolium Pall.	Accepted		TRO
Polygonum angustifolium var. songaricum (Schrenk) Steward	Synonym		TRO
Polygonum angustissimum F.Muell.	Unresolved		WCSP (in review)
Polygonum anomalum Bruyn	Unresolved		WCSP (in review)
Polygonum antihaemorrhoidale Mart.	Unresolved		WCSP (in review)
Polygonum antihaemorrhoidale var. aquatile Mart.	Synonym		TRO
Polygonum antihaemorrhoidale f. aquatile Mart.	Synonym		TRO
Polygonum antihaemorrhoidale f. riparium Mart.	Synonym		TRO
Polygonum antihaemorrhoidale var. riparium Mart.	Synonym		TRO
Polygonum aphyllum Krock.	Synonym		TRO
Polygonum apoense Elmer	Unresolved		WCSP (in review)
Polygonum appressum Steud.	Unresolved		WCSP (in review)
Polygonum aquaticum A.Gray ex Meisn.	Unresolved		WCSP (in review)
Polygonum arachnoideum Klotzsch ex Hook.f.	Unresolved		WCSP (in review)
Polygonum arachnoideum Klotzsch ex Meisn.	Unresolved		WCSP (in review)
Polygonum araraticum Kom.	Synonym		TRO
Polygonum arborescens Vell.	Unresolved		WCSP (in review)
Polygonum arcticum Pall. ex Spreng.	Synonym		TRO
Polygonum arcuatum Greene	Synonym		TRO
Polygonum arenarium Waldst. & Kit.	Accepted		WCSP (in review)
Polygonum arenarium subsp. janatae Soó	Synonym		TRO
Polygonum arenarium subsp. pseudoarenarium Soó	Synonym		TRO
Polygonum arenarium subsp. pulchellum (Loisel.) Thell.	Accepted		WCSP (in review)
Polygonum arenarium subsp. pulchellum D. A. Webb & Chater	Synonym		TRO
Polygonum arenastrum Boreau	Accepted		WCSP (in review)
Polygonum arenastrum subsp. boreale (Lange) Á.Löve	Synonym		WCSP (in review)
Polygonum arenastrum subsp. calcatum (Lindm.) Wissk.	Synonym		WCSP (in review)
Polygonum arenastrum subsp. microspermum (Jord. ex Boreau) H.Scholz	Synonym		WCSP (in review)
Polygonum arenicola Suksd.	Unresolved		WCSP (in review)
Polygonum argenteum Skvortsov	Synonym		TRO
Polygonum argenteum Ehrenb. ex Meisn.	Synonym		TRO
Polygonum argyrocoleon Steud. ex Kunze	Accepted		TRO
Polygonum arianum Grig.	Unresolved		WCSP (in review)
Polygonum aridum Boiss. & Hausskn.	Unresolved		WCSP (in review)
Polygonum arifolium L.	Synonym		TRO
Polygonum arifolium Thunb.	Synonym		TRO
Polygonum arifolium var. lentiforme Fernald & Griscom	Synonym		TRO
Polygonum arifolium var. perfoliatum L.	Synonym		TRO
Polygonum arifolium var. pubescens (R.Keller) Fernald	Unresolved		WCSP (in review)
Polygonum articulatum L.	Synonym		TRO
Polygonum arussense Chiov.	Unresolved		WCSP (in review)
Polygonum aschersonianum H.Gross	Synonym		WCSP (in review)
Polygonum asclepiadeum (Greene) Fedde	Unresolved		WCSP (in review)
Polygonum asiaticum B.D.Jacks.	Unresolved		WCSP (in review)
Polygonum asperulum Zapal.	Unresolved		WCSP (in review)
Polygonum asperulum Wall.	Unresolved		WCSP (in review)
Polygonum assamicum Meisn.	Accepted		TRO
Polygonum atlanticum (B.L. Rob.) E.P. Bicknell	Synonym		TRO
Polygonum atraphaxiforme Botsch.	Unresolved		WCSP (in review)
Polygonum atraphaxis Thunb.	Synonym		TRO
Polygonum atraphaxoides Thunb.	Synonym		TRO
Polygonum atriplicifolium Wall.	Unresolved		WCSP (in review)
Polygonum attenuatum R. Br.	Synonym		TRO
Polygonum attenuatum Petrov ex Kom.	Synonym		TRO
Polygonum aubertii L.Henry	Synonym		WCSP (in review)
Polygonum auriculatum Makino	Synonym		TRO
Polygonum austiniae Greene	Synonym		WCSP (in review)
Polygonum australe Thiéb.-Bern. ex Pers.	Unresolved		WCSP (in review)
Polygonum australe A.Rich.	Unresolved		WCSP (in review)
Polygonum australe Spreng.	Unresolved		WCSP (in review)
Polygonum autumnale Brenckle	Synonym		TRO
Polygonum aviculare L.	Accepted		WCSP (in review)
Polygonum aviculare subsp. aequale (Lindm.) Asch. & Graebn.	Synonym		WCSP (in review)
Polygonum aviculare var. angustissimum Meisn.	Synonym		WCSP (in review)
Polygonum aviculare var. aviculare	Unresolved		TRO
Polygonum aviculare subsp. aviculare	Accepted		TRO
Polygonum aviculare subsp. boreale (Lange) Karlsson	Synonym		WCSP (in review)
Polygonum aviculare var. boreale Lange	Synonym		WCSP (in review)
Polygonum aviculare subsp. buxiforme (Small) Costea & Tardif	Accepted		TRO
Polygonum aviculare subsp. calcatum (Lindm.) Thell.	Synonym		WCSP (in review)
Polygonum aviculare var. calcatum Hyl.	Synonym		TRO
Polygonum aviculare subsp. depressum (Meisn.) Arcang.	Accepted		TRO
Polygonum aviculare var. depressum Meisn.	Synonym		TRO
Polygonum aviculare var. eximium Asch. & Graebn.	Synonym		TRO
Polygonum aviculare var. fusco-ochreatum (Kom.) A.J. Li	Accepted		TRO
Polygonum aviculare subsp. heterophyllum (Lindm.) Asch. & Graebn.	Synonym		TRO
Polygonum aviculare var. heterophyllum (Lindm.) Munshi & Javeid	Synonym		TRO
Polygonum aviculare subsp. microspermum (Jord. ex Boreau) Berher	Synonym		TRO
Polygonum aviculare var. minutiflorum Franch.	Synonym		TRO
Polygonum aviculare subsp. monspeliense (Thiéb.-Bern. ex Pers.) Arcang.	Synonym		TRO
Polygonum aviculare var. montevidense Cham. & Schltdl.	Synonym		TRO
Polygonum aviculare var. neglectum (Besser) Rchb.	Synonym		WCSP (in review)
Polygonum aviculare subsp. neglectum (Besser) Arcang.	Synonym		WCSP (in review)
Polygonum aviculare subsp. pulchellum (Loisel.) O.Bolòs & Vigo	Synonym		WCSP (in review)
Polygonum aviculare subsp. rectum Chrtek	Synonym		TRO
Polygonum aviculare subsp. robertii (Loisel.) O.Bolòs & Vigo	Synonym		WCSP (in review)
Polygonum aviculare subsp. rurivagum (Jord. ex Boreau) O.Bolòs & Vigo	Synonym		WCSP (in review)
Polygonum aviculare subsp. rurivagum (Jord. ex Boreau) Berher	Synonym		TRO
Polygonum aviculare var. vegetum Ledeb.	Synonym		TRO
Polygonum aviculare var. virgatum Peterm.	Synonym		TRO
Polygonum axillaris Hook.f.	Unresolved		WCSP (in review)
Polygonum azoricum H.C.Watson ex Meisn.	Unresolved		WCSP (in review)
Polygonum babingtonii Hance	Synonym		TRO
Polygonum baccatum Sol. ex Meisn.	Unresolved		WCSP (in review)
Polygonum bacciferum Bojer	Unresolved		WCSP (in review)
Polygonum baicalense Sipliv.	Accepted		TRO
Polygonum balansae Boiss.	Unresolved		WCSP (in review)
Polygonum balansae subsp. rhizoxylon (Pau & Font Quer) Greuter	Unresolved		WCSP (in review)
Polygonum baldschuanicum Regel	Synonym		WCSP (in review)
Polygonum baltistanicum Chaudhri	Unresolved		WCSP (in review)
Polygonum banca Ham. ex Hook.f.	Unresolved		WCSP (in review)
Polygonum banka Buch.-Ham. ex Wall.	Unresolved		WCSP (in review)
Polygonum barbatum L.	Synonym		TRO
Polygonum barbatum Walter	Synonym		TRO
Polygonum barbatum var. gracile (Danser) Steward	Synonym		TRO
Polygonum barbatum subsp. gracile Danser	Synonym		TRO
Polygonum barbatum var. stagninum (Buch.-Ham. ex Meisn.) Steward	Synonym		TRO
Polygonum bargusinense Peshkova	Accepted		TRO
Polygonum battandieri (Maire & Sennen) Maire & Sennen ex Vindt	Unresolved		WCSP (in review)
Polygonum baumgartenianum Schur	Unresolved		WCSP (in review)
Polygonum bellardii All.	Accepted		WCSP (in review)
Polygonum bellardii var. gracilius Ledeb.	Synonym		TRO
Polygonum bellardii var. patulum (M. Bieb.) Meisn.	Synonym		TRO
Polygonum belophyllum Litv.	Synonym		TRO
Polygonum benguetense Merr.	Unresolved		WCSP (in review)
Polygonum bernardinum Greene	Unresolved		WCSP (in review)
Polygonum berteroi Phil.	Synonym		TRO
Polygonum bertolonii Goiran & Tonini	Unresolved		WCSP (in review)
Polygonum betpakdalense Bajtenov	Unresolved		WCSP (in review)
Polygonum bettfreundianum Lind.	Synonym		TRO
Polygonum beyrichianum Cham. & Schltdl.	Synonym		TRO
Polygonum biaristatum Aitch. & Hemsl.	Unresolved		WCSP (in review)
Polygonum × bicolor Borbás	Unresolved		WCSP (in review)
Polygonum biconvexum Hayata	Accepted		TRO
Polygonum bicorne Raf.	Synonym		TRO
Polygonum bidwelliae S.Watson	Unresolved		WCSP (in review)
Polygonum biforme Wahlenb.	Synonym		TRO
Polygonum binsarii Silas & R.D.Gaur	Synonym		WCSP (in review)
Polygonum bioritauense Ohki	Unresolved		WCSP (in review)
Polygonum birmanicum Gage	Synonym		TRO
Polygonum biscaticlium Buch.-Ham. ex Meisn.	Unresolved		WCSP (in review)
Polygonum biscatilium Wall.	Unresolved		WCSP (in review)
Polygonum bisculatium Ham. ex Hook.f.	Unresolved		WCSP (in review)
Polygonum bishirae Buch.-Ham. ex Meisn.	Unresolved		WCSP (in review)
Polygonum bishirae Buch.-Ham. ex Hook.f.	Unresolved		WCSP (in review)
Polygonum bistorta L.	Synonym		WCSP (in review)
Polygonum bistorta subsp. carneum Coode & Cullen	Synonym		TRO
Polygonum bistorta subsp. cordifolium Malyschev	Synonym		TRO
Polygonum bistorta var. cordifolium Turcz.	Synonym		TRO
Polygonum bistorta subsp. ellipticum (Willd. ex Spreng.) Petrovsky	Synonym		TRO
Polygonum bistorta var. ellipticum (Willd. ex Spreng.) Turcz.	Synonym		TRO
Polygonum bistorta var. linearifolium S. Watson	Synonym		TRO
Polygonum bistorta var. nitens Fisch. & C.A. Mey.	Synonym		TRO
Polygonum bistorta var. oblongifolium Meisn.	Synonym		TRO
Polygonum bistorta subsp. ochotense (Petrov ex Kom.) Vorosch.	Synonym		TRO
Polygonum bistorta subsp. pacificum (Petrov ex Kom.) Vorosch.	Synonym		TRO
Polygonum bistorta subsp. plumosum (Small) Hultén	Synonym		TRO
Polygonum bistorta var. plumosum (Small) B. Boivin	Synonym		TRO
Polygonum bistortoides Pursh	Synonym		TRO
Polygonum bistortoides Boiss.	Synonym		TRO
Polygonum bistortoides var. linearifolium (S. Watson) Small	Synonym		TRO
Polygonum bistortoides var. oblongifolium (Meisn.) H. St. John	Synonym		TRO
Polygonum blancheanum Gand.	Unresolved		WCSP (in review)
Polygonum blumei Meisn. ex Miq.	Synonym		TRO
Polygonum bocconei DC. ex Meisn.	Unresolved		WCSP (in review)
Polygonum bodinieri H. Lév. & Vaniot	Synonym		TRO
Polygonum × bogoriense Danser	Unresolved		WCSP (in review)
Polygonum × bohemicum (Chrtek & Chrtková) Zika & Jacobson	Synonym		WCSP (in review)
Polygonum bolanderi W.H. Brewer	Accepted		TRO
Polygonum bonaerense Speg.	Synonym		TRO
Polygonum bonatii H. Lév.	Synonym		TRO
Polygonum bordzilowskii Klokov	Synonym		WCSP (in review)
Polygonum boreale (Lange) Small	Accepted		WCSP (in review)
Polygonum borgoicum Tupitz.	Unresolved		WCSP (in review)
Polygonum bornmuelleri Litv.	Accepted		TRO
Polygonum botuliforme Mozaff.	Unresolved		WCSP (in review)
Polygonum bowenkampii Phil.	Accepted		TRO
Polygonum brachiatum Poir.	Synonym		TRO
Polygonum brachypodum Baker	Synonym		TRO
Polygonum brachytrichum Ohwi	Unresolved		WCSP (in review)
Polygonum bracteosum Phil.	Unresolved		WCSP (in review)
Polygonum brasiliense K. Koch	Accepted		TRO
Polygonum braunii Bluff & Fingerh.	Unresolved		WCSP (in review)
Polygonum breviarticulatum Rech.f.	Unresolved		WCSP (in review)
Polygonum breviochreatum Makino	Unresolved		WCSP (in review)
Polygonum brevisetum Meisn.	Unresolved		WCSP (in review)
Polygonum brittingeri Opiz	Synonym		WCSP (in review)
Polygonum brittingeri Beck	Accepted		TRO
Polygonum brunonis Wall.	Synonym		TRO
Polygonum buchananii Dammer	Synonym		WCSP (in review)
Polygonum bucharicum Grig.	Synonym		TRO
Polygonum buisanense Ohki	Synonym		TRO
Polygonum bulbiferum Royle ex Bab.	Synonym		TRO
Polygonum bungeanum Turcz.	Synonym		TRO
Polygonum bussei Peter	Unresolved		WCSP (in review)
Polygonum buxifolium Nutt. ex Bong.	Synonym		TRO
Polygonum buxiforme Small	Synonym		TRO
Polygonum buxiforme var. montanum (Small) R.J. Davis	Unresolved		TRO
Polygonum caballeroi Phil.	Unresolved		WCSP (in review)
Polygonum caducifolium Vorosch.	Accepted		TRO
Polygonum caespitosum var. longisetum (Bruijn) Danser	Synonym		TRO
Polygonum caespitosum subsp. yokusaianum (Makino) Danser	Synonym		TRO
Polygonum calcatum Lindm.	Synonym		WCSP (in review)
Polygonum californicum Meisn.	Accepted		TRO
Polygonum callmei Beck	Unresolved		WCSP (in review)
Polygonum calophyllum (Greene) Fedde	Unresolved		WCSP (in review)
Polygonum calostachyum Diels	Synonym		TRO
Polygonum campanulatum Hook.f.	Synonym		WCSP (in review)
Polygonum campanulatum var. campanulatum	Unresolved		TRO
Polygonum campanulatum var. fulvidum Hook. f.	Unresolved		TRO
Polygonum campanulatum var. lichiangense (W.W. Sm.) Steward	Synonym		TRO
Polygonum camporum Meisn.	Synonym		TRO
Polygonum camporum var. australe Meisn.	Synonym		TRO
Polygonum camptianum Meisn.	Unresolved		WCSP (in review)
Polygonum camptostachys Gand.	Unresolved		WCSP (in review)
Polygonum canadense (Greene) Fedde	Unresolved		WCSP (in review)
Polygonum canescens Link ex Dethard.	Unresolved		WCSP (in review)
Polygonum capitatum Buch.-Ham. ex D.Don	Synonym		WCSP (in review)
Polygonum cappadocicum Boiss. & Balansa	Unresolved		WCSP (in review)
Polygonum careyi Olney	Accepted		WCSP (in review)
Polygonum carneum C. Koch	Accepted		TRO
Polygonum carthusianorum Gand.	Unresolved		WCSP (in review)
Polygonum cascadense W.H.Baker	Unresolved		WCSP (in review)
Polygonum cashmirense H.Gross	Unresolved		WCSP (in review)
Polygonum caspicum Kom.	Unresolved		WCSP (in review)
Polygonum cathayanum A.J. Li	Accepted		TRO
Polygonum caucanum Fassett	Unresolved		WCSP (in review)
Polygonum caucasicum Hoffm.	Unresolved		WCSP (in review)
Polygonum caudatum Sam.	Synonym		TRO
Polygonum caurianum B.L. Rob.	Synonym		TRO
Polygonum caurianum subsp. hudsonianum S.J. Wolf & McNeill	Synonym		TRO
Polygonum cavaleriei H. Lév.	Synonym		TRO
Polygonum cedrorum Boiss. & Kotschy	Unresolved		WCSP (in review)
Polygonum celebicum Danser	Unresolved		WCSP (in review)
Polygonum centinodum Lam.	Synonym		TRO
Polygonum cephalophorum Greene	Unresolved		WCSP (in review)
Polygonum cereale Salisb.	Unresolved		WCSP (in review)
Polygonum cespitosum Blume	Synonym		TRO
Polygonum cespitosum var. longisetum (Bruijn) Steward	Synonym		TRO
Polygonum chamissoeanum Wedd.	Synonym		TRO
Polygonum chamissonianum Steud.	Unresolved		WCSP (in review)
Polygonum chanetii H. Lév.	Synonym		TRO
Polygonum chaneyi B.Fedtsch. ex Steward	Unresolved		WCSP (in review)
Polygonum changii Kitag.	Synonym		TRO
Polygonum chelanicum (Greene) Fedde	Unresolved		WCSP (in review)
Polygonum chevrolatii Gand.	Unresolved		WCSP (in review)
Polygonum chilense K. Koch	Synonym		TRO
Polygonum chiloensis Rech. f.	Unresolved		TRO
Polygonum chinense L.	Synonym		TRO
Polygonum chinense var. chinense	Unresolved		TRO
Polygonum chinense var. hispidum Hook. f.	Unresolved		TRO
Polygonum chinense f. hispidum (Hook. f.) Sam.	Synonym		TRO
Polygonum chinense var. malaicum (Danser) Steward	Synonym		TRO
Polygonum chinense var. ovalifolium Meisn.	Unresolved		TRO
Polygonum chinense var. paradoxum (H. Lév.) A.J. Li	Unresolved		TRO
Polygonum chitralicum Rech. f. & Schiman-Czeika	Synonym		TRO
Polygonum chlorochryseum M.M.Ivanova	Unresolved		WCSP (in review)
Polygonum chlorocoleum Steud. ex Boiss.	Unresolved		WCSP (in review)
Polygonum chrtekii Czerep.	Accepted		TRO
Polygonum ciliatum Buch.-Ham. ex D.Don	Unresolved		WCSP (in review)
Polygonum ciliatum Willd. ex Spreng.	Unresolved		WCSP (in review)
Polygonum ciliatum Ehrenb. ex Meisn.	Unresolved		WCSP (in review)
Polygonum ciliatum Lour.	Unresolved		WCSP (in review)
Polygonum ciliinerve (Nakai) Ohwi	Synonym		TRO
Polygonum cilinode Michx.	Synonym		TRO
Polygonum cilinode f. erectum (Peck) Fernald	Synonym		TRO
Polygonum cilinode var. erectum Peck	Synonym		TRO
Polygonum cilinode var. laevigatum Fernald	Synonym		TRO
Polygonum ciliosum Meisn.	Unresolved		WCSP (in review)
Polygonum cirrhosum Moc. & Sessé ex Meisn.	Unresolved		WCSP (in review)
Polygonum clarkei C.W.Park	Unresolved		WCSP (in review)
Polygonum claviculatum Meisn.	Unresolved		WCSP (in review)
Polygonum cliffortioides Meisn.	Unresolved		WCSP (in review)
Polygonum cliopolitanum Hance	Synonym		TRO
Polygonum coarctatum Willd. ex Spreng.	Unresolved		WCSP (in review)
Polygonum coarctatum var. majus Meisn.	Synonym		TRO
Polygonum coccineum Muhl.	Synonym		TRO
Polygonum coccineum f. natans (Wiegand) Stanford	Unresolved		TRO
Polygonum coccineum var. pratincola (Greene) Stanford	Synonym		TRO
Polygonum coccineum var. rigidulum (E. Sheld.) Stanford	Synonym		TRO
Polygonum coccineum f. terrestre (Willd.) Stanford	Unresolved		TRO
Polygonum coccineum var. terrestre Willd.	Synonym		TRO
Polygonum coccoloba Steud.	Unresolved		WCSP (in review)
Polygonum cochinchinense (Lour.) Meisn.	Synonym		TRO
Polygonum cognatum Meisn.	Accepted		WCSP (in review)
Polygonum cognatum var. alpestre (C.A. Mey.) Meisn.	Synonym		TRO
Polygonum cognatum subsp. chitralicum (Rech. f. & Schiman-Czeika) Qaiser	Accepted		TRO
Polygonum cognatum subsp. cognatum	Accepted		TRO
Polygonum collare Mart. ex Meisn.	Unresolved		WCSP (in review)
Polygonum commixtum Greene	Unresolved		WCSP (in review)
Polygonum compactum Hook. f.	Synonym		TRO
Polygonum complexum A.Cunn.	Synonym		WCSP (in review)
Polygonum comptonianum Meisn.	Unresolved		WCSP (in review)
Polygonum condensatum Schultz ex Nyman	Unresolved		WCSP (in review)
Polygonum confertiflorum Nutt. ex Piper	Synonym		WCSP (in review)
Polygonum confertum Royle ex Bab.	Synonym		TRO
Polygonum confusum Meisn.	Unresolved		WCSP (in review)
Polygonum consimile Greene	Unresolved		WCSP (in review)
Polygonum conspersum Meisn.	Synonym		TRO
Polygonum conspicuum (Nakai) Nakai	Synonym		TRO
Polygonum constans Cummins	Synonym		TRO
Polygonum controversum Guss.	Unresolved		WCSP (in review)
Polygonum convolvulaceum Lam.	Unresolved		WCSP (in review)
Polygonum convolvuliforme St.-Lag.	Unresolved		WCSP (in review)
Polygonum × convolvuloides Brügger	Unresolved		WCSP (in review)
Polygonum convolvulus L.	Synonym		WCSP (in review)
Polygonum convolvulus var. pauciflorum (Maxim.) Vorosch.	Synonym		TRO
Polygonum cordatum Meisn.	Unresolved		WCSP (in review)
Polygonum cordobense Lindau	Synonym		TRO
Polygonum coriaceum Sam.	Accepted		TRO
Polygonum coriarium Grig.	Accepted		TRO
Polygonum coronulatum Steud.	Unresolved		WCSP (in review)
Polygonum corrigioloides Jaub. & Spach	Unresolved		WCSP (in review)
Polygonum corsiuanum Link	Unresolved		WCSP (in review)
Polygonum corymbosum Willd.	Unresolved		WCSP (in review)
Polygonum covillei (Greene) Fedde	Unresolved		WCSP (in review)
Polygonum crassicaule Raf.	Unresolved		WCSP (in review)
Polygonum crassifolium Murray	Unresolved		WCSP (in review)
Polygonum crassinerve Ces.	Unresolved		WCSP (in review)
Polygonum crassum Lojac.	Unresolved		WCSP (in review)
Polygonum cretaceum Kom.	Synonym		WCSP (in review)
Polygonum criopolitanum Hance	Accepted		TRO
Polygonum crispatum C.B.Clarke	Unresolved		WCSP (in review)
Polygonum crispatum Gand.	Unresolved		WCSP (in review)
Polygonum crispulum Sims	Unresolved		WCSP (in review)
Polygonum crispum Hornem.	Unresolved		WCSP (in review)
Polygonum cristatum Engelm. & A. Gray	Synonym		TRO
Polygonum cumingianum Gand.	Unresolved		WCSP (in review)
Polygonum cunninghamii Meisn.	Unresolved		WCSP (in review)
Polygonum cusickii (Greene) Fedde	Unresolved		WCSP (in review)
Polygonum cuspidatum Siebold & Zucc.	Synonym		TRO
Polygonum cuspidatum Willd. ex Spreng.	Synonym		TRO
Polygonum cuspidatum var. spectabile Noter	Synonym		TRO
Polygonum cyanandrum Diels	Accepted		TRO
Polygonum cymosum Trevir.	Synonym		WCSP (in review)
Polygonum cynanchoides Hemsl.	Synonym		TRO
Polygonum cynanchoides var. glabriusculum A.J. Li	Synonym		TRO
Polygonum czukavinae Soják	Accepted		TRO
Polygonum damrongianum Hosseus	Unresolved		WCSP (in review)
Polygonum danubiale A.Kern.	Unresolved		WCSP (in review)
Polygonum daphnophyllum Andrz.	Unresolved		WCSP (in review)
Polygonum daphnophyllum Andrz. ex Meisn.	Unresolved		WCSP (in review)
Polygonum darrisii H. Lév.	Accepted		TRO
Polygonum davisiae W.H. Brewer ex A. Gray	Synonym		TRO
Polygonum davuricum Willd. ex Spreng.	Unresolved		WCSP (in review)
Polygonum deasyi Rendle	Unresolved		WCSP (in review)
Polygonum debeauxii Legrand	Unresolved		WCSP (in review)
Polygonum debile Meisn.	Unresolved		WCSP (in review)
Polygonum deciduum Boiss. & Noe ex Meissn.	Synonym		TRO
Polygonum decipiens R.Br.	Synonym		WCSP (in review)
Polygonum declinatum Vell.	Synonym		WCSP (in review)
Polygonum decumbens P.Fourn. ex Vindt	Unresolved		WCSP (in review)
Polygonum decumbens Bruyn	Unresolved		WCSP (in review)
Polygonum decumbens Schur	Unresolved		WCSP (in review)
Polygonum deflexipilosum Kitam.	Synonym		TRO
Polygonum delfini Phil.	Unresolved		WCSP (in review)
Polygonum delicatulum Meisn.	Accepted		TRO
Polygonum densiflorum Meisn.	Synonym		TRO
Polygonum densiflorum Blume	Accepted		TRO
Polygonum densiflorum var. ciliolatum Meisn. ex A. DC.	Synonym		TRO
Polygonum densiflorum f. ciliolatum (Meisn. ex A. DC.) Fassett	Accepted		TRO
Polygonum densiflorum var. imberbe Meisn. ex A. DC.	Synonym		TRO
Polygonum densiflorum f. imberbe (Meisn. ex A. DC.) Fassett	Accepted		TRO
Polygonum dentatoalatum F. Schmidt	Synonym		TRO
Polygonum denticulatum C.C. Huang	Synonym		TRO
Polygonum denudatum Boreau	Unresolved		WCSP (in review)
Polygonum depressum A.Cunn. ex Meisn.	Unresolved		WCSP (in review)
Polygonum dibotrys D.Don	Synonym		WCSP (in review)
Polygonum dichotomum Blume	Synonym		TRO
Polygonum diclinum F.Muell.	Unresolved		WCSP (in review)
Polygonum dielsii H. Lév.	Synonym		TRO
Polygonum dietrichiae Domin	Unresolved		WCSP (in review)
Polygonum diffusum Pall. ex Spreng.	Unresolved		WCSP (in review)
Polygonum digeneum Rouy	Unresolved		WCSP (in review)
Polygonum dioicum Buch.-Ham. ex Meisn.	Unresolved		WCSP (in review)
Polygonum diospyrifolium Cham. & Schltdl.	Unresolved		WCSP (in review)
Polygonum dissitiflorum Hemsl.	Accepted		TRO
Polygonum distachyum Mart. ex Meisn.	Unresolved		WCSP (in review)
Polygonum divaricatum L.	Accepted		TRO
Polygonum divaricatum f. glabrum Meisn.	Synonym		TRO
Polygonum divaricatum var. limosum Kom.	Synonym		TRO
Polygonum dolichopodum Ohki	Synonym		TRO
Polygonum dombeyanum Kuntze	Synonym		TRO
Polygonum donianum Spreng.	Synonym		TRO
Polygonum donii Meisn.	Synonym		TRO
Polygonum douglasii Greene	Accepted		TRO
Polygonum douglasii var. austinae (Greene) M.E.Jones	Synonym		WCSP (in review)
Polygonum douglasii subsp. austiniae (Greene) A.E.Murray	Accepted		WCSP (in review)
Polygonum douglasii subsp. austiniae (Greene) J.C. Hickman	Synonym		TRO
Polygonum douglasii subsp. engelmannii (Greene) J.T.Kartesz & Gandhi	Accepted		WCSP (in review)
Polygonum douglasii subsp. johnstonii (Munz) J.C.Hickman	Accepted		WCSP (in review)
Polygonum douglasii var. johnstonii Munz	Synonym		WCSP (in review)
Polygonum douglasii var. latifolium (Engelm.) Greene	Synonym		TRO
Polygonum douglasii subsp. majus (Meisn.) J.C. Hickman	Synonym		TRO
Polygonum douglasii var. microspermum (Engelm.) Dorn	Accepted		TRO
Polygonum douglasii var. montanum Small	Synonym		TRO
Polygonum douglasii subsp. nuttallii (Small) J.C. Hickman	Synonym		TRO
Polygonum douglasii subsp. spergulariiforme (Meisn. ex Small) J.C. Hickman	Synonym		TRO
Polygonum douglasii var. utahense (Brenckle & Cottam) S.L. Welsh	Synonym		TRO
Polygonum dracunculifolium Boiss.	Unresolved		WCSP (in review)
Polygonum dregeanum Meisn.	Unresolved		WCSP (in review)
Polygonum dregei Meisn.	Unresolved		WCSP (in review)
Polygonum dryandri Spreng.	Synonym		TRO
Polygonum dshawachischwilii Charkev.	Accepted		TRO
Polygonum dubium Stein ex A. Br.	Synonym		TRO
Polygonum duclouxii H. Lév. & Vaniot	Synonym		TRO
Polygonum dumetorum L.	Synonym		WCSP (in review)
Polygonum dumetorum f. cristatum (Engelm. & A. Gray) B.L. Rob.	Synonym		TRO
Polygonum dumetorum var. scandens G...	Synonym		TRO
Polygonum dumosum Boiss.	Unresolved		WCSP (in review)
Polygonum durum Brenckle	Synonym		TRO
Polygonum ebracteatum Munshi & Javeid	Synonym		WCSP (in review)
Polygonum eciliatum W.Stone	Unresolved		WCSP (in review)
Polygonum effusum Meisn.	Accepted		TRO
Polygonum ehrenbergii Meisn.	Unresolved		WCSP (in review)
Polygonum ekimianum Leblebici, H.Duman & Aytaç	Unresolved		WCSP (in review)
Polygonum elatius R.Br.	Unresolved		WCSP (in review)
Polygonum elegans Ten. [Illegitimate]	Unresolved		WCSP (in review)
Polygonum ellipticum Willd. ex Spreng.	Accepted		TRO
Polygonum emaciatum A. Nelson	Synonym		TRO
Polygonum emarginatum Roth	Synonym		TRO
Polygonum emersum (Michx.) Britton	Synonym		TRO
Polygonum emodi Meisn.	Synonym		TRO
Polygonum emodi var. dependens Diels	Unresolved		TRO
Polygonum emodi var. emodi	Unresolved		TRO
Polygonum engelmannii Greene	Synonym		WCSP (in review)
Polygonum englerianum H. Gross	Synonym		TRO
Polygonum ensigerum Juz.	Accepted		TRO
Polygonum ephedrodes Kuntze	Unresolved		WCSP (in review)
Polygonum ephedroides Hook.f.	Unresolved		WCSP (in review)
Polygonum epilobioides Wedd.	Synonym		WCSP (in review)
Polygonum equisetiforme Sm.	Accepted		WCSP (in review)
Polygonum erectominus Makino	Unresolved		WCSP (in review)
Polygonum erectum L.	Synonym		TRO
Polygonum erectum Vell.	Synonym		TRO
Polygonum erectum Roth	Synonym		TRO
Polygonum erectum subsp. achoreum (S.F. Blake) Á. Löve & D. Löve	Synonym		TRO
Polygonum erythrodes Miq.	Unresolved		WCSP (in review)
Polygonum erythropus Dammer	Unresolved		WCSP (in review)
Polygonum esotericum L.C. Wheeler	Synonym		TRO
Polygonum esquirolii H. Lév.	Synonym		TRO
Polygonum eurybelonum Danser	Unresolved		WCSP (in review)
Polygonum euryphyllum Danser	Unresolved		WCSP (in review)
Polygonum euxinum Chrtek	Unresolved		WCSP (in review)
Polygonum excurrens Steward	Synonym		TRO
Polygonum exiguum Meisn.	Unresolved		WCSP (in review)
Polygonum exile Eastw.	Synonym		TRO
Polygonum exsertum Small	Synonym		TRO
Polygonum extremiorientale Vorosch.	Unresolved		WCSP (in review)
Polygonum fagopyrum L.	Synonym		WCSP (in review)
Polygonum fallax Greene	Unresolved		WCSP (in review)
Polygonum fallax Small	Unresolved		WCSP (in review)
Polygonum fasciculatum Sessé & Moc.	Unresolved		WCSP (in review)
Polygonum fastigiatoramosum Makino	Unresolved		WCSP (in review)
Polygonum fastigiatum Raf.	Unresolved		WCSP (in review)
Polygonum fauriei H. Lév. & Vaniot	Synonym		TRO
Polygonum ferrugineum Wedd.	Synonym		WCSP (in review)
Polygonum ferrugineum var. incanum (Meisn.) Small	Unresolved		TRO
Polygonum ferrugineum var. patagonicum (Speg.) Macloskie	Synonym		TRO
Polygonum fertile (Maxim.) A.J. Li	Accepted		TRO
Polygonum fibrilliferum Kom.	Unresolved		WCSP (in review)
Polygonum figertii Beck	Unresolved		WCSP (in review)
Polygonum filicaule Wall. ex Meisn.	Accepted		WCSP (in review)
Polygonum filiforme Thunb.	Synonym		TRO
Polygonum filiforme subsp. neofiliforme (Nakai) Kitam.	Synonym		TRO
Polygonum filiforme var. neofiliforme (Nakai) Ohwi	Synonym		TRO
Polygonum fimbriatum Elliott	Synonym		TRO
Polygonum fissum Blume	Unresolved		WCSP (in review)
Polygonum fistulosum (Greene) Fedde	Unresolved		WCSP (in review)
Polygonum flaccidum Meisn.	Synonym		TRO
Polygonum flaccidum var. hispidum (Buch.-Ham. ex D. Don) Hook. f.	Synonym		TRO
Polygonum flagellare Spreng.	Unresolved		WCSP (in review)
Polygonum flagellare Bertol. ex Sebast. & Mauri	Unresolved		WCSP (in review)
Polygonum flagelliforme Loisel.	Unresolved		WCSP (in review)
Polygonum flagelliforme Wedd.	Unresolved		WCSP (in review)
Polygonum flavescens Jord. ex Nyman	Unresolved		WCSP (in review)
Polygonum flexile Greene	Unresolved		WCSP (in review)
Polygonum flexuosum Benth.	Synonym		TRO
Polygonum floribundum Schltdl. ex Spreng.	Accepted		WCSP (in review)
Polygonum floribundum Wedd.	Synonym		TRO
Polygonum floridum Borbás	Unresolved		WCSP (in review)
Polygonum florulentum Kuntze	Unresolved		WCSP (in review)
Polygonum fluitans Eaton	Synonym		TRO
Polygonum fluviatile Ham. ex Hook.f.	Unresolved		WCSP (in review)
Polygonum fluviatile Buch.-Ham. ex Endl.	Unresolved		WCSP (in review)
Polygonum foliosum H.Lindb.	Synonym		WCSP (in review)
Polygonum foliosum var. paludicola (Makino) Kitam.	Unresolved		TRO
Polygonum forbesii Hance	Synonym		TRO
Polygonum forrestii Diels	Accepted		TRO
Polygonum forrestii var. pumilio Lingelsh.	Synonym		TRO
Polygonum fowleri B.L.Rob.	Unresolved		WCSP (in review)
Polygonum fowleri subsp. fowleri	Unresolved		TRO
Polygonum fowleri subsp. hudsonianum (S.J. Wolf & McNeill) Costea & Tardif	Unresolved		TRO
Polygonum fragile SUMNER	Synonym		TRO
Polygonum franchetii Vorosch.	Accepted		TRO
Polygonum franciscanum (Greene) Fedde	Unresolved		WCSP (in review)
Polygonum franktonii S.J.Wolf & McNeill	Unresolved		WCSP (in review)
Polygonum frondosum Meisn.	Synonym		TRO
Polygonum frutescens L.	Synonym		TRO
Polygonum fruticosum S.G.Gmel. ex Meisn.	Unresolved		WCSP (in review)
Polygonum fruticulosum Walp.	Synonym		TRO
Polygonum fugax Small	Unresolved		WCSP (in review)
Polygonum fusco-ochreatum Kom.	Synonym		TRO
Polygonum fusco-ochreatum f. stans (Kitag.) C.F. Fang	Synonym		TRO
Polygonum fusiforme Greene	Synonym		TRO
Polygonum gabrielae Costea & Tardif	Unresolved		WCSP (in review)
Polygonum galapagense Caruel	Accepted		TRO
Polygonum gallicum Raffaelli	Synonym		WCSP (in review)
Polygonum ganderbalense Munshi & Javeid	Synonym		WCSP (in review)
Polygonum geniculatum Bellardi ex Colla	Unresolved		WCSP (in review)
Polygonum geniculatum Riddell ex Meisn.	Unresolved		WCSP (in review)
Polygonum geniculatum Poir.	Unresolved		WCSP (in review)
Polygonum gentilianum (H. Lév.) H. Lév.	Synonym		TRO
Polygonum gilesii Hemsl.	Synonym		TRO
Polygonum giranense Ohki	Unresolved		WCSP (in review)
Polygonum glaberrimum Kitam.	Synonym		TRO
Polygonum glabratum Meisn.	Unresolved		WCSP (in review)
Polygonum glabrum Willd.	Synonym		WCSP (in review)
Polygonum glabrum Cham. & Schltdl.	Synonym		TRO
Polygonum glaciale (Meisn.) Hook. f.	Synonym		TRO
Polygonum glaciale var. glaciale	Unresolved		TRO
Polygonum glaciale var. przewalskii (A.K. Skvortsov & Borodina) A.J. Li	Unresolved		TRO
Polygonum glanduliferum Nakai	Synonym		TRO
Polygonum glandulopilosum De Wild.	Synonym		WCSP (in review)
Polygonum glandulosum Kit.	Synonym		TRO
Polygonum glareosum Schischk.	Synonym		TRO
Polygonum glastifolium Greene	Unresolved		WCSP (in review)
Polygonum glaucescens N.A.Ivanova ex N.N.Tupits?na	Unresolved		WCSP (in review)
Polygonum glaucum Nutt.	Accepted		WCSP (in review)
Polygonum globispicum (Nakai) C.W.Park	Unresolved		WCSP (in review)
Polygonum glomeratum Dammer	Synonym		WCSP (in review)
Polygonum gloriosum H. Lév.	Synonym		TRO
Polygonum glutinosum Wall.	Unresolved		WCSP (in review)
Polygonum glutinosum var. capensis Hedw.	Synonym		TRO
Polygonum gmelinii Steud.	Unresolved		WCSP (in review)
Polygonum gmelinii Meisn.	Unresolved		WCSP (in review)
Polygonum goyalpara Ham. ex Hook.f.	Unresolved		WCSP (in review)
Polygonum goyalparae Buch.-Ham. ex Endl.	Unresolved		WCSP (in review)
Polygonum gracile Nutt.	Synonym		TRO
Polygonum gracilescens Mart. ex Meisn.	Unresolved		WCSP (in review)
Polygonum gracilipes Hemsl.	Synonym		TRO
Polygonum gracilipes var. odonotopterum (H. Gross) Sam.	Synonym		TRO
Polygonum gracilius (Ledeb.) Klokov	Synonym		WCSP (in review)
Polygonum gracillimum Spreng.	Unresolved		WCSP (in review)
Polygonum gracillimum Kuntze	Unresolved		WCSP (in review)
Polygonum graminifolium Wierzb. ex Heuff.	Unresolved		WCSP (in review)
Polygonum graminifolium Hoffm. ex Meisn.	Unresolved		WCSP (in review)
Polygonum grandiflorum Bertol.	Synonym		TRO
Polygonum grandifolium (Greene) Fedde	Unresolved		WCSP (in review)
Polygonum greenei S. Watson	Synonym		TRO
Polygonum griffithii Hook. f.	Accepted		TRO
Polygonum grossii H. Lév.	Synonym		TRO
Polygonum guatemalense Gand.	Synonym		TRO
Polygonum gummifera Wedd.	Synonym		TRO
Polygonum gunnii Hook.f.	Unresolved		WCSP (in review)
Polygonum gussonei Tod.	Accepted		WCSP (in review)
Polygonum guttuliferum Miq. ex Hook.f.	Unresolved		WCSP (in review)
Polygonum guttuliferum Miq. ex Meisn.	Unresolved		WCSP (in review)
Polygonum gymnopus Franch. & Sav.	Unresolved		WCSP (in review)
Polygonum hachidyoense Makino	Unresolved		WCSP (in review)
Polygonum hagei Royle ex Bab.	Unresolved		WCSP (in review)
Polygonum hamiltonii Spreng.	Unresolved		WCSP (in review)
Polygonum hamiltonii Meisn.	Unresolved		WCSP (in review)
Polygonum hangchouense Matsuda	Synonym		TRO
Polygonum hartwrightii A. Gray	Synonym		TRO
Polygonum hassanabdalicum Chaudhri	Synonym		TRO
Polygonum hastatoauriculatum Makino ex Nakai	Synonym		TRO
Polygonum hastatosagittatum Makino	Accepted		TRO
Polygonum hastatosagittatum var. latifolium Makino	Synonym		TRO
Polygonum hastatotrilobum Meisn.	Synonym		TRO
Polygonum hastatotrilobum var. lenticulare Danser	Synonym		TRO
Polygonum hastatum Murray	Unresolved		WCSP (in review)
Polygonum hastatum Bojer & Hils. ex Baker	Unresolved		WCSP (in review)
Polygonum hastatum Zoll. & Moritzi	Unresolved		WCSP (in review)
Polygonum hastulatum (Sm.) Kuntze	Synonym		TRO
Polygonum hayachinense Makino	Unresolved		WCSP (in review)
Polygonum hayi Strachey & Winterb. ex Meisn.	Unresolved		WCSP (in review)
Polygonum hecasanthum Schur	Unresolved		WCSP (in review)
Polygonum hermonis Kotschy ex Boiss.	Unresolved		WCSP (in review)
Polygonum herniarioides Spreng.	Synonym		TRO
Polygonum hesperium (Greene) Fedde	Unresolved		WCSP (in review)
Polygonum × heterocarpum Beck	Unresolved		WCSP (in review)
Polygonum heterophyllum Lindm.	Synonym		WCSP (in review)
Polygonum heterophyllum var. angustissimum (Meisn.) Lindm.	Synonym		WCSP (in review)
Polygonum heterophyllum subsp. boreale Á. Löve & D. Löve	Synonym		TRO
Polygonum heterophyllum var. caespitosum Lindm.	Synonym		WCSP (in review)
Polygonum heterophyllum var. eximium Lindm.	Synonym		WCSP (in review)
Polygonum heterophyllum var. rubescens (Small) R.J.Davis	Synonym		WCSP (in review)
Polygonum heterophyllum f. rubescens (Small) Brenckle	Synonym		WCSP (in review)
Polygonum heterophyllum subsp. rurivagum (Jord. ex Boreau) Lindm.	Synonym		WCSP (in review)
Polygonum heterosepalum M.Peck & Ownbey	Unresolved		WCSP (in review)
Polygonum hickmanii H.R.Hinds & Rand.Morgan	Unresolved		WCSP (in review)
Polygonum himalayense H. Gross	Synonym		TRO
Polygonum hippopotami Ehrenb. ex Meisn.	Unresolved		WCSP (in review)
Polygonum hirsutum Walter	Synonym		TRO
Polygonum hirtum Ruiz & Pav.	Unresolved		WCSP (in review)
Polygonum hirtum Willd. ex Spreng.	Unresolved		WCSP (in review)
Polygonum hispidulum Blume	Unresolved		WCSP (in review)
Polygonum hispidum Kunth	Synonym		WCSP (in review)
Polygonum hispidum Buch.-Ham. ex D. Don	Synonym		TRO
Polygonum hissaricum Popov	Accepted		TRO
Polygonum hololeion Peter	Unresolved		WCSP (in review)
Polygonum holotrichum Peter	Unresolved		WCSP (in review)
Polygonum homalostachyum (Greene) Fedde	Unresolved		WCSP (in review)
Polygonum honanense H.W. Kung	Accepted		TRO
Polygonum hookeri Meisn.	Accepted		TRO
Polygonum hornemannii Meisn.	Unresolved		WCSP (in review)
Polygonum horridum Buch.-Ham. ex Roxb.	Unresolved		WCSP (in review)
Polygonum howellii Greene	Unresolved		WCSP (in review)
Polygonum huananense A.J. Li	Accepted		TRO
Polygonum hubertii Lingelsh.	Synonym		TRO
Polygonum hudsonianum (S.J. Wolf & McNeill) H.R. Hinds	Synonym		TRO
Polygonum huichunense F.Z. Li, Y.T. Hou & C.Y. Qu	Accepted		TRO
Polygonum humifusum C. Merck ex K. Koch	Accepted		TRO
Polygonum humifusum subsp. caurianum (B.L. Rob.) Costea & Tardif	Accepted		TRO
Polygonum humifusum var. mandshuricum Skvortsov	Synonym		TRO
Polygonum humifusum f. yamatutae (Kitag.) C.F. Fang	Synonym		TRO
Polygonum humile Meisn.	Accepted		TRO
Polygonum humirepens Gand.	Unresolved		WCSP (in review)
Polygonum hybridum Chaub.	Synonym		TRO
Polygonum hydrophilum Peter	Unresolved		WCSP (in review)
Polygonum hydropiper L.	Synonym		WCSP (in review)
Polygonum hydropiper var. acuminatum Franch. & Sav.	Synonym		TRO
Polygonum hydropiper var. eglandulosa Hook. f.	Synonym		TRO
Polygonum hydropiper var. flaccidum (Meisn.) Steward	Synonym		TRO
Polygonum hydropiper var. hispidum (Buch.-Ham. ex D. Don) Steward	Synonym		TRO
Polygonum hydropiper var. longistachyum Y.L. Chang & S.X. Li	Synonym		TRO
Polygonum hydropiper subsp. microcarpum Danser	Synonym		TRO
Polygonum hydropiper var. projectum Stanford	Synonym		TRO
Polygonum hydropiper var. vulgare Meisn.	Synonym		TRO
Polygonum hydropiperoides Michx.	Synonym		WCSP (in review)
Polygonum hydropiperoides var. adenocalyx Stanford	Synonym		TRO
Polygonum hydropiperoides var. asperifolium Stanford	Synonym		TRO
Polygonum hydropiperoides var. breviciliatum Fernald	Synonym		TRO
Polygonum hydropiperoides var. bushianum Stanford	Synonym		TRO
Polygonum hydropiperoides var. digitatum Fernald	Synonym		TRO
Polygonum hydropiperoides var. hydropiperoides	Unresolved		TRO
Polygonum hydropiperoides f. leucochranthum A.H. Moore	Synonym		TRO
Polygonum hydropiperoides var. macerum Stanford	Synonym		TRO
Polygonum hydropiperoides var. macounii Small	Synonym		TRO
Polygonum hydropiperoides var. opelousanum (Riddell ex Small) W. Stone	Synonym		TRO
Polygonum hydropiperoides var. persicarioides (Kunth) Stanford	Synonym		TRO
Polygonum hydropiperoides var. psilostachyum H. St. John	Synonym		TRO
Polygonum hydropiperoides var. sanibelense Stanford	Synonym		TRO
Polygonum hydropiperoides var. setaceum (Baldwin) Gleason	Unresolved		TRO
Polygonum hydropiperoides subsp. setaceum (Baldwin) M. Dalci	Synonym		TRO
Polygonum hydropiperoides f. strigosum (Small) Stanford	Synonym		TRO
Polygonum hydropiperoides var. strigosum Small	Synonym		TRO
Polygonum hydropiperoides var. virgatum (Cham. & Schltdl.) Meisn.	Synonym		TRO
Polygonum hygrogenes Gand.	Unresolved		WCSP (in review)
Polygonum hypanicum Klokov	Synonym		WCSP (in review)
Polygonum hypoleucum (Nakai) Kudô & Sasaki [Invalid]	Synonym		WCSP (in review)
Polygonum hypoleucum Ohwi	Synonym		WCSP (in review)
Polygonum hypostictum Miq. ex Meisn.	Unresolved		WCSP (in review)
Polygonum hypostictum Miq. ex Hook.f.	Unresolved		WCSP (in review)
Polygonum hyrcanicum Rech.f.	Unresolved		WCSP (in review)
Polygonum hyssopifolium Bojer	Unresolved		WCSP (in review)
Polygonum hystriculum Schuster	Accepted		TRO
Polygonum icaricum Rech.f.	Accepted		WCSP (in review)
Polygonum idaeum Hayek	Accepted		WCSP (in review)
Polygonum ilanense Y.C.Liu & C.H.Ou	Unresolved		WCSP (in review)
Polygonum illecebroides Meisn.	Unresolved		WCSP (in review)
Polygonum imberbe Sol. ex G.Forst.	Unresolved		WCSP (in review)
Polygonum imbricatum Nutt. ex S.Watson	Unresolved		WCSP (in review)
Polygonum imbricatum Raf.	Unresolved		WCSP (in review)
Polygonum imbricatum var. watsonii (Small) Jeps.	Synonym		TRO
Polygonum imeretinum Kom.	Accepted		TRO
Polygonum incanum F.W.Schmidt	Synonym		WCSP (in review)
Polygonum incarnatum Elliott	Synonym		TRO
Polygonum indicum B.Heyne	Unresolved		WCSP (in review)
Polygonum induratum Asch. & Barbey ex E.A.Durand & Barratte	Unresolved		WCSP (in review)
Polygonum infestum Salisb.	Unresolved		WCSP (in review)
Polygonum inflexum Kom.	Accepted		TRO
Polygonum injucunda Lindl.	Synonym		TRO
Polygonum insigne (Greene) Fedde	Unresolved		WCSP (in review)
Polygonum insulare Lojac.	Unresolved		WCSP (in review)
Polygonum insulare M.M.Maksimova	Unresolved		WCSP (in review)
Polygonum intercedens Petrov ex Kom.	Synonym		TRO
Polygonum interior Brenckle	Synonym		TRO
Polygonum intermedium Nutt. ex S. Watson	Synonym		TRO
Polygonum interruptum Bunge	Synonym		TRO
Polygonum intramongolicum Fu & Zhao	Unresolved		TRO
Polygonum intramongolicum Borodina	Accepted		TRO
Polygonum intricatum Kom.	Synonym		TRO
Polygonum inundatum Mart. ex Meisn.	Unresolved		WCSP (in review)
Polygonum inundatum Raf.	Unresolved		WCSP (in review)
Polygonum iowense (Rydb.) Cratty	Unresolved		WCSP (in review)
Polygonum iseanum Makino	Unresolved		WCSP (in review)
Polygonum islandicum (L.) Hook.f.	Synonym		WCSP (in review)
Polygonum iturupense Mishurov	Unresolved		WCSP (in review)
Polygonum janatae Klokov	Synonym		WCSP (in review)
Polygonum janoviense Zapal.	Unresolved		WCSP (in review)
Polygonum japonicum Meisn.	Accepted		TRO
Polygonum japonicum f. brevistylum Nakai	Synonym		TRO
Polygonum japonicum var. conspicuum Nakai	Accepted		TRO
Polygonum japonicum var. japonicum	Accepted		TRO
Polygonum japonicum var. micranthum Nakai	Synonym		TRO
Polygonum japonicum var. taitoinsulare Masam.	Unresolved		WCSP (in review)
Polygonum javanicum Bruyn	Unresolved		WCSP (in review)
Polygonum jaxarticum SUMNER	Synonym		TRO
Polygonum jeholense (Kitag.) Baranov & Skvortsov ex S.X. Li & Y.L. Chang	Synonym		TRO
Polygonum jejunum Greene	Unresolved		WCSP (in review)
Polygonum jucundum Diels	Synonym		TRO
Polygonum jucundum Meisn.	Accepted		TRO
Polygonum junceum Ledeb.	Accepted		TRO
Polygonum jurii A.K. Skvortsov	Accepted		TRO
Polygonum kakaii (H.Hara) Makino	Unresolved		WCSP (in review)
Polygonum karacae Ziel. & Borat.	Unresolved		WCSP (in review)
Polygonum kawagoeanum Makino	Accepted		TRO
Polygonum kawakamii Ohki	Unresolved		WCSP (in review)
Polygonum kelloggii Greene	Synonym		WCSP (in review)
Polygonum kelloggii var. confertiflorum (Nutt. ex Piper) Dorn	Synonym		TRO
Polygonum kermesinum Kingdon-Ward	Unresolved		WCSP (in review)
Polygonum kinashii H. Lév. & Vaniot	Synonym		TRO
Polygonum kirinense S.X. Li & Y.L. Chang	Synonym		TRO
Polygonum kitaibelianum Sadler	Synonym		WCSP (in review)
Polygonum kolumense A.P.Khokhr.	Unresolved		WCSP (in review)
Polygonum komarovii H. Lév.	Synonym		TRO
Polygonum koreense Nakai	Synonym		TRO
Polygonum koreense f. viridiflorum S.X. Li & Y.L. Chang	Synonym		TRO
Polygonum korotkovae SUMNER	Synonym		TRO
Polygonum korshinskianum Nakai	Synonym		TRO
Polygonum korthalsii Gand.	Unresolved		WCSP (in review)
Polygonum kotoshoense Ohki	Synonym		TRO
Polygonum kotovii Klokov	Synonym		WCSP (in review)
Polygonum kotschyanum Boiss.	Synonym		TRO
Polygonum krascheninnikovii Czerep.	Accepted		TRO
Polygonum krasseri Rech.	Unresolved		WCSP (in review)
Polygonum kudriaschevii Vassilkovsk.	Unresolved		WCSP (in review)
Polygonum kudrjaschevii Vassilkovsk.	Synonym		TRO
Polygonum kuekenthalii H. Lév.	Synonym		TRO
Polygonum kumaonum Subba Rao & Kumari	Unresolved		WCSP (in review)
Polygonum kuntzei P.Fourn.	Unresolved		WCSP (in review)
Polygonum kurilense Tatew.	Unresolved		WCSP (in review)
Polygonum labordei H. Lév. & Vaniot	Synonym		TRO
Polygonum lacerum Kunth	Accepted		TRO
Polygonum laetevirens (Greene) Fedde	Unresolved		WCSP (in review)
Polygonum lanatum Roxb.	Synonym		TRO
Polygonum lanceifolium Danser	Unresolved		WCSP (in review)
Polygonum langeanum Rouy	Unresolved		WCSP (in review)
Polygonum langloisii (Greene) Fedde	Unresolved		WCSP (in review)
Polygonum lanigerum R.Br.	Synonym		WCSP (in review)
Polygonum lanigerum var. africanum Meisn.	Synonym		TRO
Polygonum lanigerum var. cristatum Hemsl.	Synonym		TRO
Polygonum lapathifolium L.	Synonym		WCSP (in review)
Polygonum lapathifolium subsp. brittingeri Rech. f.	Synonym		TRO
Polygonum lapathifolium var. glabrum Burtt Davy	Synonym		TRO
Polygonum lapathifolium var. incanum (F.W. Schmidt) W.D.J. Koch	Synonym		TRO
Polygonum lapathifolium var. incanum Ledeb.	Synonym		TRO
Polygonum lapathifolium var. lanatum (Roxb.) Steward	Unresolved		TRO
Polygonum lapathifolium var. lanigerum (R.Br.) C.Moore & Betche	Synonym		WCSP (in review)
Polygonum lapathifolium var. lapathifolium	Unresolved		TRO
Polygonum lapathifolium subsp. maculatum T.-Dyer & Trim.	Unresolved		TRO
Polygonum lapathifolium var. maculatum T.-Dyer & Trim.	Synonym		TRO
Polygonum lapathifolium subsp. nodosum (Pers.) Weinm.	Synonym		TRO
Polygonum lapathifolium var. nodosum (Pers.) Hook. f.	Synonym		TRO
Polygonum lapathifolium f. nodosum (Pers.) Beck	Synonym		TRO
Polygonum lapathifolium subsp. nodosum Danser	Synonym		TRO
Polygonum lapathifolium var. ovatum A. Br.	Synonym		TRO
Polygonum lapathifolium subsp. pallidum FRIES	Synonym		TRO
Polygonum lapathifolium var. salicifolium Sibth.	Synonym		TRO
Polygonum lapathifolium var. xanthophyllum H.W. Kung	Synonym		TRO
Polygonum lapidosum (Kitag.) Kitag.	Synonym		TRO
Polygonum latifolium Giesecke ex Lange	Unresolved		WCSP (in review)
Polygonum latifolium Kotschy ex Boiss.	Unresolved		WCSP (in review)
Polygonum latum Small ex Rydb.	Synonym		TRO
Polygonum laurinum (Greene) Fedde	Unresolved		WCSP (in review)
Polygonum laxiflorum Weihe	Unresolved		WCSP (in review)
Polygonum laxiflorum Pall. ex Meisn.	Unresolved		WCSP (in review)
Polygonum laxmannii Lepech.	Synonym		WCSP (in review)
Polygonum laxum Rchb.	Unresolved		WCSP (in review)
Polygonum lemannianum Meisn.	Synonym		TRO
Polygonum lencoranicum Kom.	Accepted		TRO
Polygonum leptobotrys (Meisn.) Kuntze	Synonym		TRO
Polygonum leptocarpum B.L. Rob.	Synonym		TRO
Polygonum leptocladum Danser	Unresolved		WCSP (in review)
Polygonum leptophyllum (Greene) Fedde	Unresolved		WCSP (in review)
Polygonum leptopodum Diels	Synonym		TRO
Polygonum leptopodum var. grossii (H. Lév.) Sam.	Synonym		TRO
Polygonum leptostachyum Bruyn	Unresolved		WCSP (in review)
Polygonum leuconeuron Peter	Unresolved		WCSP (in review)
Polygonum liaotungense Kitag.	Unresolved		WCSP (in review)
Polygonum libani Boiss.	Unresolved		WCSP (in review)
Polygonum libanoticum Ehrenb. ex Meisn.	Unresolved		WCSP (in review)
Polygonum lichiangense W.W. Sm.	Accepted		TRO
Polygonum lilacinum (Greene) Fedde	Unresolved		WCSP (in review)
Polygonum limbatum Meisn.	Synonym		WCSP (in review)
Polygonum limicola Sam.	Accepted		TRO
Polygonum limosum Kom.	Accepted		TRO
Polygonum limprichtii Lingelsh.	Synonym		TRO
Polygonum lineare Sam.	Synonym		TRO
Polygonum linearifolium Greene	Unresolved		WCSP (in review)
Polygonum linicola Sutulov	Synonym		WCSP (in review)
Polygonum linifolium B.Heyne	Unresolved		WCSP (in review)
Polygonum linifolium Muhl.	Unresolved		WCSP (in review)
Polygonum linifolium Perr. ex Meisn.	Unresolved		WCSP (in review)
Polygonum littorale (Greene) Fedde	Accepted		TRO
Polygonum littorale Meissn.	Synonym		TRO
Polygonum lonchophyllum (Greene) Fedde	Accepted		TRO
Polygonum longiflorum Courchet	Unresolved		WCSP (in review)
Polygonum longiocreatum Bartlett	Accepted		TRO
Polygonum longipedicellatum Zak.	Synonym		TRO
Polygonum longipes Halácsy & Charrel	Accepted		WCSP (in review)
Polygonum longisetum Bruijn	Synonym		TRO
Polygonum longisetum var. longisetum	Unresolved		TRO
Polygonum longisetum var. rotundatum A.J. Li	Unresolved		TRO
Polygonum longistylum Small	Synonym		TRO
Polygonum longistylum var. omissum (Greene) Stanford	Unresolved		TRO
Polygonum lorinseri Opiz	Unresolved		WCSP (in review)
Polygonum louci Gand.	Unresolved		WCSP (in review)
Polygonum loureiroi Poir.	Unresolved		WCSP (in review)
Polygonum ludovicianum Meisn.	Unresolved		WCSP (in review)
Polygonum luxurians Grig.	Synonym		TRO
Polygonum luzuloides Jaub. & Spach	Unresolved		WCSP (in review)
Polygonum lyratum Nakai	Unresolved		WCSP (in review)
Polygonum maackianum Regel	Accepted		TRO
Polygonum macounii Small	Synonym		TRO
Polygonum macrochaeton Fresen.	Unresolved		WCSP (in review)
Polygonum macrochaetum Miq.	Unresolved		WCSP (in review)
Polygonum macrohymenium Boiss.	Unresolved		WCSP (in review)
Polygonum macrophyllum D. Don	Accepted		TRO
Polygonum macrophyllum var. macrophyllum	Accepted		TRO
Polygonum macrophyllum var. stenophyllum (Meisn.) A.J. Li	Accepted		TRO
Polygonum macrophyllum f. tomentosum Kitam.	Synonym		TRO
Polygonum macropterum Meisn.	Unresolved		WCSP (in review)
Polygonum maculatum Raf.	Synonym		WCSP (in review)
Polygonum madagascariense (Meisn.) Meisn.	Synonym		WCSP (in review)
Polygonum mairei H. Lév.	Synonym		TRO
Polygonum majanthemifolium (Petrov) Steward	Synonym		TRO
Polygonum majus (Meisn.) Piper	Accepted		TRO
Polygonum makinoi Nakai	Synonym		TRO
Polygonum malaicum Danser	Synonym		TRO
Polygonum mandshuricum Skvortsov	Synonym		TRO
Polygonum manoraene Buch.-Ham. ex Endl.	Unresolved		WCSP (in review)
Polygonum manshuriense Petrov ex Kom.	Accepted		TRO
Polygonum mariae V.N. Vassil.	Synonym		TRO
Polygonum marinense T.R.Mert. & P.H.Raven	Unresolved		WCSP (in review)
Polygonum marioticum Ehrenb. ex Meisn.	Unresolved		WCSP (in review)
Polygonum maritimum L.	Accepted		WCSP (in review)
Polygonum maritimum var. chilense (K. Koch) Skottsb.	Synonym		TRO
Polygonum marmoramae Ham. ex Hook.f.	Unresolved		WCSP (in review)
Polygonum marretii H. Lév.	Synonym		TRO
Polygonum martini H. Lév. & Vaniot	Synonym		TRO
Polygonum martinianum Hy	Unresolved		WCSP (in review)
Polygonum maximowiczii Regel	Unresolved		WCSP (in review)
Polygonum mearnsii Elmer	Unresolved		WCSP (in review)
Polygonum meeboldii W.W. Sm.	Synonym		TRO
Polygonum meisnerianum Cham. & Schltdl.	Synonym		TRO
Polygonum meisnerianum var. jalapense B.L. Rob.	Synonym		TRO
Polygonum meisnerianum var. setosum Chodat & Hassl.	Synonym		TRO
Polygonum meissneri Wall.	Unresolved		WCSP (in review)
Polygonum melastomaca Delile	Unresolved		WCSP (in review)
Polygonum mesembricum Chrtek	Synonym		WCSP (in review)
Polygonum mesochorum (Greene) Fedde	Unresolved		WCSP (in review)
Polygonum mesomorphum Danser	Unresolved		WCSP (in review)
Polygonum metschii Beck	Unresolved		WCSP (in review)
Polygonum mexicanum Small	Synonym		TRO
Polygonum meyenii K.Koch	Unresolved		WCSP (in review)
Polygonum meyeri Steud.	Synonym		TRO
Polygonum mezianum H. Gross	Synonym		TRO
Polygonum micranthemum Franch. ex Hook.f.	Unresolved		WCSP (in review)
Polygonum micranthum Meisn.	Synonym		TRO
Polygonum microcephalum D. Don	Accepted		TRO
Polygonum microcephalum var. microcephalum	Accepted		TRO
Polygonum microcephalum var. sphaerocephalum (Wall. ex Meisn.) H. Hara	Accepted		TRO
Polygonum microspermum Jord. ex Boreau	Synonym		WCSP (in review)
Polygonum microspermum (Engelm.) Small	Synonym		TRO
Polygonum middendorfii Kongar	Unresolved		WCSP (in review)
Polygonum mildbraedii Dammer	Unresolved		WCSP (in review)
Polygonum milletii (H. Lév.) H. Lév.	Accepted		TRO
Polygonum minimum S. Watson	Accepted		TRO
Polygonum minus Huds.	Synonym		WCSP (in review)
Polygonum minus subsp. micranthum (Meisn.) Danser	Synonym		TRO
Polygonum minus subsp. procerum Danser	Synonym		TRO
Polygonum minus var. procerum (Danser) Steward	Synonym		TRO
Polygonum minus var. subcontinum Meisn.	Synonym		TRO
Polygonum minus f. trigonocarpum Makino	Synonym		TRO
Polygonum minutiflorum Nakai	Unresolved		WCSP (in review)
Polygonum minutissimum L.O. Williams	Synonym		TRO
Polygonum minutulum Makino	Synonym		TRO
Polygonum minutum Hayata	Synonym		TRO
Polygonum miquelianum Meisn.	Unresolved		WCSP (in review)
Polygonum mirajabii Chaudhri	Synonym		TRO
Polygonum mississippiense Stanford	Synonym		TRO
Polygonum mite Schrank	Synonym		WCSP (in review)
Polygonum mite Pers.	Synonym		TRO
Polygonum mixtum Goiran & Tonini	Unresolved		WCSP (in review)
Polygonum modestum Heimerl	Unresolved		WCSP (in review)
Polygonum molle D. Don	Synonym		TRO
Polygonum molle var. frondosum (Meisn.) A.J. Li	Unresolved		TRO
Polygonum molle var. molle	Unresolved		TRO
Polygonum molle var. rude (Meisn.) A.J. Li	Unresolved		TRO
Polygonum molliiforme Boiss.	Accepted		TRO
Polygonum monspeliense Thiéb.-Bern. ex Pers.	Synonym		WCSP (in review)
Polygonum montanum (Small) Greene	Synonym		TRO
Polygonum montereyense Brenckle	Synonym		TRO
Polygonum monticolum Steud.	Unresolved		WCSP (in review)
Polygonum morrisonense Hayata	Synonym		TRO
Polygonum mucronatum Royle ex Bab.	Synonym		TRO
Polygonum muhlenbergii (Meisn.) S. Watson	Synonym		TRO
Polygonum muhlenbergii var. natans Wiegand	Synonym		TRO
Polygonum multangulare Hook. & Arn.	Unresolved		WCSP (in review)
Polygonum multiflorum Thunb.	Synonym		WCSP (in review)
Polygonum multiflorum var. angulatum S.Y.Liu	Synonym		WCSP (in review)
Polygonum multiflorum var. ciliinerve (Nakai) Steward	Synonym		TRO
Polygonum multiflorum var. hypoleucum (Ohwi) T.S.Liu, S.S.Ying & M.J.Lai	Synonym		WCSP (in review)
Polygonum multisetum Delile	Unresolved		WCSP (in review)
Polygonum muricatum Meisn.	Accepted		TRO
Polygonum muriculatum (Greene) Fedde	Unresolved		WCSP (in review)
Polygonum muticum Moench	Unresolved		WCSP (in review)
Polygonum myosurus Franch.	Synonym		TRO
Polygonum myrianthum Boiss.	Unresolved		WCSP (in review)
Polygonum myriophyllum H. Gross	Synonym		TRO
Polygonum myrtillifolium Kom.	Accepted		TRO
Polygonum nakaii (H.Hara) Ohwi	Unresolved		WCSP (in review)
Polygonum nanetense Gand.	Unresolved		WCSP (in review)
Polygonum nanum Bory	Unresolved		WCSP (in review)
Polygonum natans (Michx.) Eaton	Synonym		TRO
Polygonum natans f. hartwrightii (A. Gray) Stanford	Synonym		TRO
Polygonum natans var. insigne (Greene) Stanford	Unresolved		TRO
Polygonum neglectum Besser	Synonym		WCSP (in review)
Polygonum neofiliforme Nakai	Synonym		TRO
Polygonum nepalense Meisn.	Synonym		WCSP (in review)
Polygonum nepalense var. adenothrix Nakai	Synonym		TRO
Polygonum nervosum Wallr.	Synonym		TRO
Polygonum newberryi Small	Synonym		TRO
Polygonum newberryi var. glabrum G.N. Jones	Synonym		TRO
Polygonum niloticum Lehm. ex Steud.	Unresolved		WCSP (in review)
Polygonum niloticum Meisn.	Unresolved		WCSP (in review)
Polygonum nipponense Makino	Synonym		TRO
Polygonum nitens (Fisch. & C.A. Mey.) Petrov ex Kom.	Synonym		TRO
Polygonum nitidum Ruiz & Pav.	Unresolved		WCSP (in review)
Polygonum nodosum Pers.	Synonym		WCSP (in review)
Polygonum nodosum var. incanum Ledeb.	Synonym		TRO
Polygonum norvegicum Lid	Accepted		TRO
Polygonum novae-angliae (Greene) Fedde	Unresolved		WCSP (in review)
Polygonum novoascanicum Klokov	Synonym		WCSP (in review)
Polygonum novoascanicum subsp. cretaceum Tzvelev	Synonym		TRO
Polygonum novoascanicum subsp. psammophilum Bordz. ex Tzvelev	Unresolved		WCSP (in review)
Polygonum novum Biroli ex Colla	Unresolved		WCSP (in review)
Polygonum nudum Dulac	Unresolved		WCSP (in review)
Polygonum nummularifolium Meisn.	Accepted		TRO
Polygonum nuristanicum Kitam.	Unresolved		WCSP (in review)
Polygonum nuttallii Small	Accepted		TRO
Polygonum nyikense Baker	Unresolved		WCSP (in review)
Polygonum obliquum Kit.	Unresolved		WCSP (in review)
Polygonum obtusifolium Täckh. & Boulos	Unresolved		WCSP (in review)
Polygonum obtusifolium Schur	Unresolved		WCSP (in review)
Polygonum occidentale Meisn.	Unresolved		WCSP (in review)
Polygonum ochotense Petrov ex Kom.	Accepted		TRO
Polygonum ochreatum L.	Accepted		TRO
Polygonum ochreatum var. laxmannii Popov	Synonym		TRO
Polygonum odontopterum (H. Gross) H.W. Kung	Synonym		TRO
Polygonum odoratum Lour.	Unresolved		WCSP (in review)
Polygonum oenochroon Gand.	Unresolved		WCSP (in review)
Polygonum oenophyton Gand.	Unresolved		WCSP (in review)
Polygonum oleraceum Schur	Unresolved		WCSP (in review)
Polygonum oliganthum Diels	Synonym		TRO
Polygonum oligocladum Danser	Unresolved		WCSP (in review)
Polygonum oligophyllum Gand.	Unresolved		WCSP (in review)
Polygonum oligophyllum Boiss.	Unresolved		WCSP (in review)
Polygonum olivascens Rech.f. & Schiman-Czeika	Unresolved		WCSP (in review)
Polygonum olivieri Meisn.	Unresolved		WCSP (in review)
Polygonum olivieri Jaub. & Spach	Unresolved		WCSP (in review)
Polygonum omerostmmum Ohki	Unresolved		WCSP (in review)
Polygonum omerostromum Ohki	Synonym		TRO
Polygonum omissum Greene	Synonym		TRO
Polygonum ooagariense Masam.	Unresolved		WCSP (in review)
Polygonum opacum Sam.	Synonym		TRO
Polygonum opelousanum Riddell ex Small	Synonym		TRO
Polygonum opelousanum var. adenocalyx Stanford	Synonym		TRO
Polygonum ophiophilum (Greene) Fedde	Unresolved		WCSP (in review)
Polygonum oreganum (Greene) Fedde	Unresolved		WCSP (in review)
Polygonum oreophilum (Makino) Ohwi	Unresolved		WCSP (in review)
Polygonum orientale L.	Synonym		WCSP (in review)
Polygonum orientale var. discolor Benth.	Synonym		TRO
Polygonum orientale var. pilosum (Roxb. ex Meisn.) Meisn.	Synonym		TRO
Polygonum oryzetorum Blume	Synonym		TRO
Polygonum otophyllum (Greene) Fedde	Unresolved		WCSP (in review)
Polygonum ovatum B.Heyne	Unresolved		WCSP (in review)
Polygonum ovczinnikovii Czukav.	Unresolved		WCSP (in review)
Polygonum owenii Bojer	Synonym		TRO
Polygonum oxanum Kom.	Synonym		TRO
Polygonum oxyphyllum Wall. ex Meisn.	Synonym		TRO
Polygonum oxyspermum C.A.Mey. & Bunge	Accepted		WCSP (in review)
Polygonum oxyspermum subsp. oxyspermum	Accepted		TRO
Polygonum oxyspermum subsp. raii (Bab.) D.A.Webb & Chater	Accepted		WCSP (in review)
Polygonum oxyspermum subsp. robertii (Loisel.) Akeroyd & D.A.Webb	Accepted		WCSP (in review)
Polygonum pachyrhizum Trautv.	Unresolved		WCSP (in review)
Polygonum pachystachyum Raf.	Unresolved		WCSP (in review)
Polygonum pacificum Petrov ex Kom.	Accepted		TRO
Polygonum palastinum Zohary	Unresolved		WCSP (in review)
Polygonum paleaceum Wall.	Accepted		TRO
Polygonum paleaceum var. paleaceum	Accepted		TRO
Polygonum pallens Gand.	Unresolved		WCSP (in review)
Polygonum pallens Pers.	Unresolved		WCSP (in review)
Polygonum pallidum With.	Synonym		WCSP (in review)
Polygonum palmatum Dunn	Accepted		TRO
Polygonum paludicola Makino	Synonym		TRO
Polygonum paludosum (Kom.) Kom.	Synonym		TRO
Polygonum pamiricum Korsh.	Synonym		TRO
Polygonum pamiroalaicum Kom.	Synonym		TRO
Polygonum panduriforme H. Lév. & Vaniot	Synonym		TRO
Polygonum pangianum (G.D.Pal & Maiti) R.C.Srivast.	Unresolved		WCSP (in review)
Polygonum paniculatum Andrz. [Illegitimate]	Synonym		WCSP (in review)
Polygonum paniculatum Blume	Synonym		TRO
Polygonum paniculatum L.	Accepted		TRO
Polygonum paniculatum var. frondosum (Meisn.) Steward	Synonym		TRO
Polygonum paniculatum var. rude (Meisn.) Steward	Synonym		TRO
Polygonum panjutinii Charkev.	Accepted		TRO
Polygonum pannonicum Simonk.	Unresolved		WCSP (in review)
Polygonum pannosum S.S.Sharp ex A.Nelson	Unresolved		WCSP (in review)
Polygonum papillosum Hartvig	Accepted		WCSP (in review)
Polygonum paradoxum Czukav.	Synonym		TRO
Polygonum paradoxum H. Lév.	Synonym		TRO
Polygonum paraguayense Wedd.	Accepted		TRO
Polygonum paralimicola A.J. Li	Accepted		TRO
Polygonum paronychia C.A.Mey.	Unresolved		WCSP (in review)
Polygonum paronychia Cham. & Schltdl.	Unresolved		WCSP (in review)
Polygonum paronychioides C.A. Mey.	Accepted		TRO
Polygonum parryi Greene	Unresolved		WCSP (in review)
Polygonum parviflorum Y.L. Chang & S.H. Li	Synonym		TRO
Polygonum parvifolium Nutt.	Unresolved		WCSP (in review)
Polygonum patens D.Don	Unresolved		WCSP (in review)
Polygonum patuliforme Vorosch.	Unresolved		TRO
Polygonum patuliforrne Vorosch.	Unresolved		WCSP (in review)
Polygonum patulum M.Bieb.	Accepted		WCSP (in review)
Polygonum patulum subsp. bordzilowskii Soó	Synonym		TRO
Polygonum patulum f. gracilius (Ledeb.) I. Grinţ.	Synonym		TRO
Polygonum patulum var. gracilius (Ledeb.) Rouy	Synonym		TRO
Polygonum patulum subsp. kitaibelianum Asch. & Graebn.	Synonym		TRO
Polygonum patulum subsp. kotovii Soó	Synonym		TRO
Polygonum patulum subsp. pulchellum (Loisel.) Leblebici	Synonym		WCSP (in review)
Polygonum pauciflorum Maxim.	Synonym		TRO
Polygonum pawlowskianum Glehn	Unresolved		WCSP (in review)
Polygonum pedunculare Wall. ex Meisn.	Synonym		TRO
Polygonum pennsylvanicum Torr.	Synonym		TRO
Polygonum pensylvanicum L.	Synonym		TRO
Polygonum pensylvanicum Bunge	Synonym		TRO
Polygonum pensylvanicum var. durum Stanford	Synonym		TRO
Polygonum pensylvanicum var. eglandulosum Myers	Synonym		TRO
Polygonum pensylvanicum var. laevigatum Fernald	Synonym		TRO
Polygonum pensylvanicum var. nesophilum Fernald	Synonym		TRO
Polygonum pensylvanicum subsp. oneilii (Brenckle) Hultén	Synonym		TRO
Polygonum pensylvanicum var. rosiflorum Norton	Synonym		TRO
Polygonum peregrinatoris Paulsen	Synonym		TRO
Polygonum perfoliatum (L.) L.	Synonym		TRO
Polygonum perforatum Meisn.	Synonym		TRO
Polygonum perforatum var. glaciale Meisn.	Synonym		TRO
Polygonum perforatum var. laevigatum Meisn.	Synonym		TRO
Polygonum pergracile Hemsl.	Synonym		TRO
Polygonum perpusillum Hook. f.	Synonym		TRO
Polygonum perrottetii Meisn.	Unresolved		WCSP (in review)
Polygonum persicaria L.	Synonym		WCSP (in review)
Polygonum persicaria subsp. hirticaulis Danser	Synonym		TRO
Polygonum persicaria f. humile S.X. Li & Y.L. Chang	Synonym		TRO
Polygonum persicaria var. incanum (F.W. Schmidt) Meisn.	Synonym		TRO
Polygonum persicaria var. incanum Roth	Synonym		TRO
Polygonum persicaria f. latifolium S.X. Li & Y.L. Chang	Synonym		TRO
Polygonum persicaria var. opacum (Sam.) A.J. Li	Unresolved		TRO
Polygonum persicaria var. persicaria	Unresolved		TRO
Polygonum persicaria var. ruderale (Salisb.) Meisn.	Synonym		TRO
Polygonum persicaria var. vernicosum Cham. & Schltdl.	Synonym		TRO
Polygonum persicarioides Kunth	Synonym		TRO
Polygonum persoonii Engelm. ex Meisn.	Unresolved		WCSP (in review)
Polygonum peruvianum Meisn.	Accepted		TRO
Polygonum petecticale Druce	Unresolved		WCSP (in review)
Polygonum petiolatum D. Don	Synonym		TRO
Polygonum phytolaccifolium Meisn. ex Small	Synonym		TRO
Polygonum pictum Jacques	Unresolved		WCSP (in review)
Polygonum piliferum Hedw.	Synonym		TRO
Polygonum pilosum Roxb. ex Meisn.	Synonym		TRO
Polygonum pilosum (Maxim.) Hemsl.	Synonym		TRO
Polygonum pilushanense Y.C. Liu & C.H. Ou	Accepted		TRO
Polygonum pinetorum Hemsl.	Accepted		TRO
Polygonum pingwuense F.Z.Li, Y.T.Hou & S.J.Fan	Unresolved		WCSP (in review)
Polygonum plantagineum (Greene) Fedde	Unresolved		WCSP (in review)
Polygonum planum Skvortsov	Synonym		TRO
Polygonum plattense (Greene) Fedde	Unresolved		WCSP (in review)
Polygonum platycladum F.Muell.	Synonym		WCSP (in review)
Polygonum platyphyllum S.X. Li & Y.L. Chang	Accepted		TRO
Polygonum plebeium R.Br.	Accepted		WCSP (in review)
Polygonum plebeium subsp. changii (Kitag.) Vorosch.	Accepted		TRO
Polygonum plebeium var. effusum (Meisn.) Hook. f.	Synonym		TRO
Polygonum plumosum Small	Synonym		TRO
Polygonum pluriflorum K.Koch	Unresolved		WCSP (in review)
Polygonum podlechii Rech.f. & Schiman-Czeika	Unresolved		WCSP (in review)
Polygonum podocephalum Klotzsch	Unresolved		WCSP (in review)
Polygonum poiretii Meisn.	Synonym		TRO
Polygonum poiretii var. madagascariense Meisn.	Synonym		TRO
Polygonum poiretii var. madagascariensis Meisn.	Synonym		WCSP (in review)
Polygonum polyanthos Bruyn	Unresolved		WCSP (in review)
Polygonum polybotryum F.Muell.	Unresolved		WCSP (in review)
Polygonum polycephalum Wall.	Unresolved		WCSP (in review)
Polygonum polycnemoides Jaub. & Spach	Accepted		TRO
Polygonum polygaloides Meisn.	Unresolved		WCSP (in review)
Polygonum polygaloides subsp. confertiflorum (Nutt. ex Piper) J.C.Hickman	Unresolved		WCSP (in review)
Polygonum polygaloides subsp. esotericum (L.C. Wheeler) J.C. Hickman	Unresolved		TRO
Polygonum polygaloides subsp. kelloggii (Greene) J.C.Hickman	Unresolved		WCSP (in review)
Polygonum polygaloides var. montanum Brenckle	Synonym		TRO
Polygonum polygaloides subsp. polygaloides	Unresolved		TRO
Polygonum polygamum Vent.	Synonym		TRO
Polygonum polymorphum Ledeb.	Unresolved		WCSP (in review)
Polygonum polymorphum var. ajanense Regel & Tiling	Synonym		TRO
Polygonum polymorphum var. angustissimum Korsh.	Synonym		TRO
Polygonum polymorphum var. foliosum R. Keller	Synonym		TRO
Polygonum polymorphum var. lapathifolium (Cham. & Schltdl.) Ledeb.	Synonym		TRO
Polygonum polyneuron Franch. & Sav.	Synonym		TRO
Polygonum polystachyum Wall. ex Meisn.	Synonym		WCSP (in review)
Polygonum polystachyum var. polystachyum	Unresolved		TRO
Polygonum popovii Borodina	Accepted		TRO
Polygonum porteri (Greene) Fedde	Unresolved		WCSP (in review)
Polygonum portoricense Bertero ex Small	Synonym		TRO
Polygonum portoricense Bertero ex Endl.	Synonym		TRO
Polygonum posumbu Buch.-Ham. ex D. Don	Accepted		TRO
Polygonum posumbu var. blumei (Meisn. ex Miq.) Herder	Synonym		TRO
Polygonum praelongum Coode & Cullen	Unresolved		WCSP (in review)
Polygonum praetermissum Hook. f.	Accepted		TRO
Polygonum pratincolum (Greene) Fedde	Unresolved		WCSP (in review)
Polygonum pringlei Small	Unresolved		WCSP (in review)
Polygonum procumbens Gilib. [Invalid]	Synonym		WCSP (in review)
Polygonum procumbens Y.L. Chang & S.X. Li	Synonym		TRO
Polygonum proliferum Houtt.	Unresolved		WCSP (in review)
Polygonum prolificum (Small) B.L. Rob.	Synonym		TRO
Polygonum prolificum var. autumnale (Brenckle) Brenckle	Synonym		TRO
Polygonum prolificum var. profusum Brenckle	Synonym		TRO
Polygonum pronum C.F. Fang	Synonym		TRO
Polygonum propinquum Ledeb.	Synonym		WCSP (in review)
Polygonum prostratum Skvortsov	Synonym		TRO
Polygonum provinciale K.Koch	Unresolved		WCSP (in review)
Polygonum przewalskii A.K. Skvortsov & Borodina	Synonym		TRO
Polygonum psammophilum (Bordz. ex Tzvelev) Tzvelev	Unresolved		WCSP (in review)
Polygonum pseudoarenarium Klokov	Synonym		WCSP (in review)
Polygonum pseudoarenarium subsp. janatae E. Wulf	Synonym		TRO
Polygonum × pseudobellardii Hausskn.	Unresolved		WCSP (in review)
Polygonum pseudohydropiper Salzm. ex Ball	Unresolved		WCSP (in review)
Polygonum × pseudoincanum Klokov	Unresolved		WCSP (in review)
Polygonum pseudojaponicum Ohki	Unresolved		WCSP (in review)
Polygonum pseudolapathum Schur	Unresolved		WCSP (in review)
Polygonum pseudonodosum Ohki	Unresolved		WCSP (in review)
Polygonum pseudopalmatum C. Ho	Synonym		TRO
Polygonum × pseudopulchellum Hausskn.	Unresolved		WCSP (in review)
Polygonum psychrophilum (Greene) Fedde	Unresolved		WCSP (in review)
Polygonum pteranthum Kitag.	Unresolved		WCSP (in review)
Polygonum pterocarpum Wall.	Unresolved		WCSP (in review)
Polygonum pteropus Hance	Synonym		TRO
Polygonum pubescens Blume	Accepted		TRO
Polygonum pulchellum Loisel.	Synonym		WCSP (in review)
Polygonum pulchrum Blume	Synonym		WCSP (in review)
Polygonum pulvinatum Kom.	Unresolved		WCSP (in review)
Polygonum punctatum Elliott	Synonym		WCSP (in review)
Polygonum punctatum Buch.-Ham. ex D. Don	Accepted		TRO
Polygonum punctatum var. alatum Buch.-Ham. ex D. Don	Synonym		TRO
Polygonum punctatum var. aquatile (Mart.) Fassett	Synonym		TRO
Polygonum punctatum var. confertiflorum (Meisn.) Fassett	Synonym		TRO
Polygonum punctatum var. eciliatum Small	Synonym		TRO
Polygonum punctatum var. ellipticum Fassett	Synonym		TRO
Polygonum punctatum var. leptostachyum (Meisn.) Small	Synonym		TRO
Polygonum punctatum var. littorale Fassett	Synonym		TRO
Polygonum punctatum f. longicollum Fassett	Synonym		TRO
Polygonum punctatum var. majus (Meisn.) Fassett	Synonym		TRO
Polygonum punctatum var. mexicanum Fassett	Synonym		TRO
Polygonum punctatum var. parviflorum Fassett	Synonym		TRO
Polygonum punctatum var. parvum Vict. & Rouss.	Synonym		TRO
Polygonum punctatum var. riparium (Meisn.) Fassett	Synonym		TRO
Polygonum punctatum var. robustius Small	Synonym		TRO
Polygonum punctatum f. stipitatum Fassett	Synonym		TRO
Polygonum punctatum var. tacubayanum (Nieuwl.) Fassett	Synonym		TRO
Polygonum punctatum var. typicum Fassett	Synonym		TRO
Polygonum puritanorum Fernald	Synonym		TRO
Polygonum purpuratum (Greene) Fedde	Unresolved		WCSP (in review)
Polygonum purpureonervosum A.J. Li	Accepted		TRO
Polygonum purpureum Gilib.	Unresolved		WCSP (in review)
Polygonum pusillum Guss. Ex Nyman	Unresolved		WCSP (in review)
Polygonum pusillum Krock.	Unresolved		WCSP (in review)
Polygonum pusillum Lam.	Unresolved		WCSP (in review)
Polygonum pusporium Gilib.	Synonym		TRO
Polygonum pyramidale H. Lév.	Synonym		TRO
Polygonum pyramidatum Loisel.	Unresolved		WCSP (in review)
Polygonum quadrangulatum M. Martens & Galeotti	Synonym		TRO
Polygonum quadrifidum Hayata	Synonym		TRO
Polygonum quarrei De Wild.	Unresolved		WCSP (in review)
Polygonum radicans Hemsl.	Synonym		TRO
Polygonum radicosum Boiss.	Unresolved		WCSP (in review)
Polygonum raii Bab.	Synonym		WCSP (in review)
Polygonum raii subsp. norvegicum Sam.	Synonym		TRO
Polygonum ramiflorum Janka	Unresolved		WCSP (in review)
Polygonum ramosissimum Michx.	Accepted		WCSP (in review)
Polygonum ramosissimum f. atlanticum B.L. Rob.	Synonym		TRO
Polygonum ramosissimum var. prolificum Small	Synonym		TRO
Polygonum ramosissimum subsp. prolificum (Small) Costea & Tardif	Accepted		TRO
Polygonum ramosissimum subsp. ramosissimum	Accepted		TRO
Polygonum ramosospicatum Klotzsch	Unresolved		WCSP (in review)
Polygonum ramosum Fisch. ex Hornem.	Unresolved		WCSP (in review)
Polygonum ramuliflorum Kitag.	Unresolved		WCSP (in review)
Polygonum raptae Buch.-Ham. ex Endl.	Unresolved		WCSP (in review)
Polygonum rapte Ham. ex Hook.f.	Unresolved		WCSP (in review)
Polygonum rectum H. Scholz	Synonym		TRO
Polygonum rectum subsp. virgatum H. Scholz	Synonym		TRO
Polygonum recumbens Royle ex Bab.	Accepted		TRO
Polygonum refractum Mart. ex Meisn.	Unresolved		WCSP (in review)
Polygonum regelianum Kom.	Synonym		TRO
Polygonum relictum Kom.	Accepted		TRO
Polygonum remotum (Greene) Fedde	Unresolved		WCSP (in review)
Polygonum renii L.C. Wang	Synonym		TRO
Polygonum repens Meisn.	Unresolved		WCSP (in review)
Polygonum restionoides Boiss. & Hausskn.	Unresolved		WCSP (in review)
Polygonum retinerve Vorosch.	Synonym		TRO
Polygonum reynoutria Makino	Synonym		TRO
Polygonum reynoutria var. ellipticum Koidz.	Synonym		TRO
Polygonum × rhaeticum Brügger	Unresolved		WCSP (in review)
Polygonum rheiflorum Griff.	Unresolved		WCSP (in review)
Polygonum rhizocaulon Bruyn	Unresolved		WCSP (in review)
Polygonum rhizoxylon Pau & Font Quer	Synonym		WCSP (in review)
Polygonum rhyticarium Kuntze	Unresolved		WCSP (in review)
Polygonum ribesioides Huber	Unresolved		WCSP (in review)
Polygonum richteri Gand.	Unresolved		WCSP (in review)
Polygonum rigidulum (Greene) Fedde	Accepted		TRO
Polygonum rigidulum E. Sheld.	Synonym		TRO
Polygonum rigidum Skvortsov	Accepted		TRO
Polygonum riparium Georgi	Accepted		TRO
Polygonum rivulare Phil.	Synonym		TRO
Polygonum rivulare Roxb.	Synonym		TRO
Polygonum robertii Loisel.	Synonym		WCSP (in review)
Polygonum robustius (Small) Fernald	Synonym		TRO
Polygonum robustum Meisn.	Unresolved		WCSP (in review)
Polygonum robynsii De Wild.	Unresolved		WCSP (in review)
Polygonum roettleri Roth	Unresolved		WCSP (in review)
Polygonum romanum Jacq.	Accepted		WCSP (in review)
Polygonum romanum subsp. gallicum (Raffaelli) Raffaelli & L.Villar	Accepted		WCSP (in review)
Polygonum roseoviride (Kitag.) S.X. Li & Y.L. Chang	Synonym		TRO
Polygonum roseoviride var. manshuricola (Kitag.) C.F. Fang	Synonym		TRO
Polygonum rothrockii (Greene) Fedde	Unresolved		WCSP (in review)
Polygonum rottboellioides Jaub. & Spach	Accepted		TRO
Polygonum rottboellioides var. tibetica (Hook. f.) R.R. Stewart	Accepted		TRO
Polygonum rotundatum (A.J.Li) F.Z.Li & C.Y.Qu	Unresolved		WCSP (in review)
Polygonum rotundifolium auct.	Unresolved		WCSP (in review)
Polygonum roxburghii Meisn.	Synonym		TRO
Polygonum royi Gand.	Unresolved		WCSP (in review)
Polygonum roylii Bab.	Unresolved		WCSP (in review)
Polygonum rubescens Small	Synonym		WCSP (in review)
Polygonum rubicundum Sol. ex Meisn.	Unresolved		WCSP (in review)
Polygonum rubricaule Cham.	Accepted		TRO
Polygonum rubriflorum Friv. ex Meisn.	Unresolved		WCSP (in review)
Polygonum rude Meisn.	Synonym		TRO
Polygonum ruderale Salisb.	Synonym		TRO
Polygonum rugosum Buch.-Ham. ex Endl.	Unresolved		WCSP (in review)
Polygonum ruizianum K.Koch	Unresolved		WCSP (in review)
Polygonum rumicifolium Royle ex Bab.	Synonym		TRO
Polygonum rumicifolium var. cordatum Royle ex Bab.	Synonym		TRO
Polygonum rumicifolium var. oblongum Meisn.	Synonym		TRO
Polygonum runcinatum Buch.-Ham. ex D. Don	Accepted		TRO
Polygonum runcinatum var. exauriculatum Lingelsh.	Synonym		TRO
Polygonum runcinatum var. runcinatum	Accepted		TRO
Polygonum runcinatum var. sinense Hemsl.	Accepted		TRO
Polygonum rupestre Kar. & Kir.	Synonym		TRO
Polygonum rupestre (Wedd.) Kuntze	Synonym		TRO
Polygonum rurivagum Jord. ex Boreau	Accepted		WCSP (in review)
Polygonum ruscinonense Gand.	Unresolved		WCSP (in review)
Polygonum ryukyuense Kitag.	Unresolved		WCSP (in review)
Polygonum sabulosum Vorosch.	Unresolved		WCSP (in review)
Polygonum sachalinense F.Schmidt	Synonym		WCSP (in review)
Polygonum sagittatum L.	Synonym		WCSP (in review)
Polygonum sagittatum var. boreale Meisn.	Synonym		TRO
Polygonum sagittatum var. gracilentum Fernald	Synonym		TRO
Polygonum sagittatum var. paludosum Kom.	Synonym		TRO
Polygonum sagittatum var. pubescens R.Keller	Synonym		WCSP (in review)
Polygonum sagittatum var. sibiricum Meisn.	Synonym		TRO
Polygonum sagittatum var. sieboldii (Meisn.) Maxim. ex Kom.	Synonym		TRO
Polygonum sagittatum subsp. sieboldii (Meisn.) Vorosch.	Synonym		TRO
Polygonum sagittatum var. ussuriense Regel	Synonym		TRO
Polygonum sagittifolia (Ortega) Kuntze	Synonym		WCSP (in review)
Polygonum sagittifolium H. Lév. & Vaniot	Synonym		TRO
Polygonum salebrosum Coode & Cullen	Unresolved		WCSP (in review)
Polygonum salicifolium Brouss. ex Willd.	Synonym		WCSP (in review)
Polygonum salicifolium Schur [Illegitimate]	Synonym		WCSP (in review)
Polygonum salicinum Greene	Unresolved		TRO
Polygonum salicornioides Jaub. & Spach	Unresolved		WCSP (in review)
Polygonum salinum Baranov & Skvortsov	Synonym		TRO
Polygonum salsugineum M.Bieb.	Accepted		WCSP (in review)
Polygonum salsuginosum Wallr.	Unresolved		WCSP (in review)
Polygonum samarense H.Gross	Synonym		WCSP (in review)
Polygonum sambesiacum Hedw.	Synonym		TRO
Polygonum sambesicum Schust.	Synonym		TRO
Polygonum samsunicum Yild. & Leblebici	Unresolved		WCSP (in review)
Polygonum sanguinaria Remy	Accepted		TRO
Polygonum sanguineum Larrañaga	Unresolved		WCSP (in review)
Polygonum saporoviense Klokov	Synonym		WCSP (in review)
Polygonum sarbhanganicum Subba Rao	Unresolved		WCSP (in review)
Polygonum sarobiense Rech.f.	Unresolved		WCSP (in review)
Polygonum savatieri Nakai	Synonym		TRO
Polygonum sawatchense Small	Synonym		WCSP (in review)
Polygonum sawatchense subsp. sawatchense	Unresolved		TRO
Polygonum scaberulum (Greene) Fedde	Unresolved		WCSP (in review)
Polygonum scabridum Willd. ex Meisn.	Unresolved		WCSP (in review)
Polygonum scabrinervium Royle ex Bab.	Unresolved		WCSP (in review)
Polygonum scabrum Moench	Synonym		WCSP (in review)
Polygonum scandens L.	Synonym		TRO
Polygonum scandens var. cristatum (Engelm. & A. Gray) Gleason	Synonym		TRO
Polygonum scandens var. dentatoalatum (F. Schmidt) Maxim. ex Franch. & Sav.	Synonym		TRO
Polygonum scandens var. dumetorum (L.) Gleason	Synonym		TRO
Polygonum schimperi Vatke ex Engl.	Unresolved		WCSP (in review)
Polygonum schindleri Danser	Unresolved		WCSP (in review)
Polygonum schinzii Hedw.	Synonym		TRO
Polygonum schinzii J. Schust.	Synonym		TRO
Polygonum schischkinii Ivanova, Elena Ilyinichna ex Borodina	Accepted		TRO
Polygonum schistosum Czukav.	Unresolved		WCSP (in review)
Polygonum × schroeterianum Danser	Unresolved		WCSP (in review)
Polygonum schugnanicum Kom.	Synonym		TRO
Polygonum schurii Fuss	Unresolved		WCSP (in review)
Polygonum schychowscii Andrz.	Unresolved		WCSP (in review)
Polygonum schychowscii Andrz. ex Trautv.	Unresolved		WCSP (in review)
Polygonum scoparium Req. ex Loisel.	Accepted		WCSP (in review)
Polygonum scopulinum (Greene) Fedde	Unresolved		WCSP (in review)
Polygonum scythicum Klokov	Synonym		WCSP (in review)
Polygonum segetale Lindm.	Unresolved		WCSP (in review)
Polygonum segetum Kunth	Synonym		WCSP (in review)
Polygonum segetum var. verrucosum Stanford	Synonym		TRO
Polygonum semidanubiale Danser	Unresolved		WCSP (in review)
Polygonum semilanceifolium Danser	Unresolved		WCSP (in review)
Polygonum semilatum Danser	Unresolved		WCSP (in review)
Polygonum semisyringifolium Danser	Unresolved		WCSP (in review)
Polygonum senegalense Meisn.	Synonym		WCSP (in review)
Polygonum senegalense subsp. albotomentosum (R.A.Graham) Germish.	Synonym		WCSP (in review)
Polygonum senegalense f. albotomentosum R.A.Graham	Synonym		WCSP (in review)
Polygonum senegalense var. robustum Cavaco	Synonym		TRO
Polygonum senegalense f. senegalense	Unresolved		TRO
Polygonum senticosum (Meisn.) Franch. & Sav.	Accepted		TRO
Polygonum senticosum var. formosanum Ohwi	Synonym		TRO
Polygonum senticosum var. sagittifolium (H. Lév. & Vaniot) C.W. Park	Synonym		TRO
Polygonum sentivosum Franch. & Sav.	Unresolved		WCSP (in review)
Polygonum sericeum Pall. ex Georgi	Accepted		TRO
Polygonum serotinum Ten.	Unresolved		WCSP (in review)
Polygonum serotinum Raf.	Unresolved		WCSP (in review)
Polygonum serpyllaceum Jaub. & Spach	Accepted		TRO
Polygonum serratum Poir.	Synonym		TRO
Polygonum serrulatoides H.Lindb.	Synonym		WCSP (in review)
Polygonum serrulatum Lag.	Synonym		WCSP (in review)
Polygonum setaceum Baldwin	Synonym		TRO
Polygonum setaceum var. interjectum Fernald	Synonym		TRO
Polygonum setaceum var. tonsum Fernald	Synonym		TRO
Polygonum setigerum Wedd.	Synonym		TRO
Polygonum setosulum A. Rich.	Synonym		TRO
Polygonum setosum Raf.	Unresolved		WCSP (in review)
Polygonum setosum Jacq.	Unresolved		WCSP (in review)
Polygonum setosum Ruiz & Pav.	Unresolved		WCSP (in review)
Polygonum shastense Brewer ex A.Gray	Unresolved		WCSP (in review)
Polygonum shiheziense F.Z. Li, Y.T. Hou & F.J. Lu	Accepted		TRO
Polygonum shuchengense Z.Z. Zhou	Synonym		TRO
Polygonum sibiricum Laxm.	Accepted		TRO
Polygonum sibiricum var. nanum Meisn.	Synonym		TRO
Polygonum sibiricum var. sibiricum	Accepted		TRO
Polygonum sibiricum subsp. thomsonii (Meisn. ex Steward) Rech. f. & Schiman-Czieka	Synonym		TRO
Polygonum sibiricum var. thomsonii Meisn. ex Steward	Synonym		TRO
Polygonum sibiricum var. thomsonii Meisn.	Accepted		TRO
Polygonum siculum Tod. ex Lojac.	Unresolved		WCSP (in review)
Polygonum sieboldii Meisn.	Synonym		TRO
Polygonum sieboldii var. pratense Y.L. Chang & S.X. Li	Synonym		TRO
Polygonum sinarum Desv. ex Meisn.	Unresolved		WCSP (in review)
Polygonum sinense J.F. Gmel.	Synonym		TRO
Polygonum sinicum (Migo) Fang & Zheng	Synonym		TRO
Polygonum sinomontanum Sam.	Accepted		TRO
Polygonum sinuatum Royle ex Bab.	Synonym		TRO
Polygonum sivasicum Kit Tan & Yildiz	Unresolved		WCSP (in review)
Polygonum smallii Kongar	Synonym		TRO
Polygonum snijmaniae S.Ortiz	Unresolved		WCSP (in review)
Polygonum sodo-folium Larrañaga	Unresolved		WCSP (in review)
Polygonum somdevae Aswal & Mehrotra	Unresolved		WCSP (in review)
Polygonum somphocarpum Bruyn	Unresolved		WCSP (in review)
Polygonum songaricum Schrenk	Accepted		TRO
Polygonum spaethii Damm.	Synonym		TRO
Polygonum sparsiflorum Vorosch.	Unresolved		WCSP (in review)
Polygonum sparsipilosum A.J. Li	Accepted		TRO
Polygonum sparsipilosum var. hubertii (Lingelsh.) A.J. Li	Accepted		TRO
Polygonum sparsipilosum var. sparsipilosum	Accepted		TRO
Polygonum speciosum Meisn.	Synonym		TRO
Polygonum spectabile Lehm.	Synonym		WCSP (in review)
Polygonum spectabile Mart. ex Meisn.	Synonym		TRO
Polygonum spectabile var. incanum Meisn.	Synonym		TRO
Polygonum spectabile var. minor Chodat	Synonym		TRO
Polygonum spectabile var. patagonica Speg.	Synonym		TRO
Polygonum spergulariiforme Meisn. ex Small	Accepted		TRO
Polygonum sphaerocephalum Wall. ex Meisn.	Synonym		TRO
Polygonum sphaerostachyum Meisn.	Synonym		TRO
Polygonum spinosum H.Gross	Unresolved		WCSP (in review)
Polygonum spinulosum Bojer ex Meisn.	Unresolved		WCSP (in review)
Polygonum spirale Noronha	Unresolved		WCSP (in review)
Polygonum splendens Klotzsch	Unresolved		WCSP (in review)
Polygonum squamosum Raf.	Unresolved		WCSP (in review)
Polygonum stagninum Buch.-Ham. ex Meisn.	Synonym		TRO
Polygonum stans Kitag.	Synonym		TRO
Polygonum statice H. Lév.	Synonym		TRO
Polygonum staticiflorum Wall.	Unresolved		WCSP (in review)
Polygonum stellatotomentosum W.W. Sm. & Ramasw.	Synonym		TRO
Polygonum stelligerum Cham.	Accepted		TRO
Polygonum stenobelonum Danser	Unresolved		WCSP (in review)
Polygonum stenophyllum Meisn.	Synonym		TRO
Polygonum sterile Nakai	Synonym		TRO
Polygonum sterile var. brevistylum (Nakai) Nakai	Synonym		TRO
Polygonum stevensii Brenckle	Synonym		TRO
Polygonum stoloniferum F. Schmidt	Synonym		TRO
Polygonum striatulum B.L. Rob.	Accepted		TRO
Polygonum striatulum var. texense (M.C. Johnst.) Costea & Tardif	Synonym		TRO
Polygonum striatum K. Koch	Synonym		TRO
Polygonum stricticaule Gand.	Unresolved		WCSP (in review)
Polygonum strigillosum Zipp. ex Miq.	Unresolved		WCSP (in review)
Polygonum strigosum R.Br.	Synonym		WCSP (in review)
Polygonum strigosum var. hastatosagittatum (Makino) Steward	Synonym		TRO
Polygonum strigosum var. muricatum (Meisn.) Stew.	Synonym		TRO
Polygonum strigosum var. pedunculare (Wall. ex Meisn.) Steward	Synonym		TRO
Polygonum strindbergii J. Schust.	Accepted		TRO
Polygonum stuckertii Gand.	Unresolved		WCSP (in review)
Polygonum styligerum Bruyn	Unresolved		WCSP (in review)
Polygonum stypticum Cham. & Schltdl.	Accepted		TRO
Polygonum subalatum Samp.	Unresolved		WCSP (in review)
Polygonum subaphyllum Sumnev.	Unresolved		WCSP (in review)
Polygonum subauriculatum Petrov ex Kom.	Accepted		TRO
Polygonum subcordatum Miq.	Unresolved		WCSP (in review)
Polygonum subcoriaceum (Greene) Fedde	Unresolved		WCSP (in review)
Polygonum subincanum Mart.	Unresolved		WCSP (in review)
Polygonum subsagittatum (De Wild.) C.W.Park	Unresolved		WCSP (in review)
Polygonum subscaposum Diels	Accepted		TRO
Polygonum × subsericeum Popov	Accepted		TRO
Polygonum subsessile R.Br.	Unresolved		WCSP (in review)
Polygonum suffruticosum Salzm. ex Ball	Unresolved		WCSP (in review)
Polygonum suffruticulosum Gand.	Unresolved		WCSP (in review)
Polygonum suffultoides A.J. Li	Accepted		TRO
Polygonum suffultum Maxim.	Accepted		TRO
Polygonum suffultum var. pergracile (Hemsl.) Sam.	Accepted		TRO
Polygonum suffultum var. suffultum	Accepted		TRO
Polygonum suifunense Vorosch. & N.S.Pavlova	Unresolved		WCSP (in review)
Polygonum sumatranum Gand.	Unresolved		WCSP (in review)
Polygonum sumatranum Bruyn	Unresolved		WCSP (in review)
Polygonum sungareense (Kitag.) Kitag.	Synonym		TRO
Polygonum sungareense f. rubiflorum S.X. Li & Y.L. Chang	Synonym		TRO
Polygonum sylvaticum Skvortsov	Unresolved		WCSP (in review)
Polygonum syringifolium Danser	Unresolved		WCSP (in review)
Polygonum tachengense F.Z.Li, Y.T.Hou & F.J.Lu	Unresolved		WCSP (in review)
Polygonum taipaishanense H.W. Kung	Synonym		TRO
Polygonum tairae Ohwi	Unresolved		WCSP (in review)
Polygonum taliense Lingelsh.	Synonym		TRO
Polygonum tamnifolium Kunth	Synonym		WCSP (in review)
Polygonum tamnifolium var. xerocarpum Kuntze	Synonym		TRO
Polygonum tanganikae J.Schust.	Unresolved		WCSP (in review)
Polygonum taquetii H. Lév.	Accepted		TRO
Polygonum tarmense Ruiz ex Meisn.	Unresolved		WCSP (in review)
Polygonum tataricum L.	Synonym		WCSP (in review)
Polygonum tataricum Wall. ex D. Don	Synonym		TRO
Polygonum tatewakianum Koji Ito	Unresolved		WCSP (in review)
Polygonum tenellum Blume	Synonym		TRO
Polygonum tenellum var. kawagoeanum (Makino) Murata	Synonym		TRO
Polygonum tenellum var. micranthum (Meisn.) C.Y. Wu	Synonym		TRO
Polygonum tenerum Spreng.	Unresolved		WCSP (in review)
Polygonum tenoreanum E.Nardi & Raffaelli	Accepted		WCSP (in review)
Polygonum tenue Michx.	Accepted		TRO
Polygonum tenue var. commune Engelm.	Synonym		TRO
Polygonum tenue var. latifolium Engelm.	Synonym		TRO
Polygonum tenue var. microspermum Engelm.	Synonym		TRO
Polygonum tenue var. protrusum Fernald	Synonym		TRO
Polygonum tenuicaule Bisset & S.Moore	Unresolved		WCSP (in review)
Polygonum tenuifolium H.W. Kung	Synonym		TRO
Polygonum tenuissimum A.I.Baranov & Skvortsov ex Vorosch.	Unresolved		WCSP (in review)
Polygonum tephioides D.Parodi	Unresolved		WCSP (in review)
Polygonum terrestre Hegetschw.	Unresolved		WCSP (in review)
Polygonum tetragonum Blume	Synonym		TRO
Polygonum texense M.C. Johnst.	Synonym		TRO
Polygonum thevenaei Lesp.	Unresolved		WCSP (in review)
Polygonum thunbergii Siebold & Zucc.	Accepted		TRO
Polygonum thunbergii f. bicovexum (Hayata) Liu et al.	Synonym		TRO
Polygonum thunbergii var. maackianum Maxim. ex Franch. & Sav.	Synonym		TRO
Polygonum thunbergii var. spicatum H. Lév.	Synonym		TRO
Polygonum thunbergii var. stoloniferum (F. Schmidt) Makino	Synonym		TRO
Polygonum thymifolium Jaub. & Spach	Accepted		TRO
Polygonum tibeticum Hemsl.	Accepted		TRO
Polygonum tiflisiense Kom.	Unresolved		WCSP (in review)
Polygonum tiliifolium (Wedd.) Kuntze	Synonym		TRO
Polygonum tinctorium Aiton	Synonym		WCSP (in review)
Polygonum todaroi Lojac.	Unresolved		WCSP (in review)
Polygonum toktogulicum Lazkov	Unresolved		WCSP (in review)
Polygonum tomentosum Schrank	Synonym		WCSP (in review)
Polygonum tomentosum Willd. [Illegitimate]	Synonym		WCSP (in review)
Polygonum torquatum Bruijn	Synonym		TRO
Polygonum torreyi S. Watson	Synonym		TRO
Polygonum tortuosum D. Don	Accepted		TRO
Polygonum tortuosum (Losinsk.) Lovelius	Synonym		TRO
Polygonum tortuosum var. spicatum Hook. f.	Synonym		TRO
Polygonum tortuosum var. tibetanum Meisn.	Synonym		TRO
Polygonum triandrous Coolidge	Unresolved		WCSP (in review)
Polygonum triandrum Coolidge	Synonym		TRO
Polygonum triangulare Wall.	Unresolved		WCSP (in review)
Polygonum triangulum E.P. Bicknell ex Small	Synonym		TRO
Polygonum trigonocarpum (Makino) Kudô & Masam.	Accepted		TRO
Polygonum tripterocarpum A. Gray ex Rothr.	Accepted		TRO
Polygonum tristachyum Baker	Synonym		TRO
Polygonum tristachyum H. Lév.	Synonym		TRO
Polygonum tropicum K.Koch	Unresolved		WCSP (in review)
Polygonum truellum Koidz.	Unresolved		WCSP (in review)
Polygonum truncatum A.Rich.	Unresolved		WCSP (in review)
Polygonum truncatum Zoll. & Moritzi	Unresolved		WCSP (in review)
Polygonum tsangschanicum Lingelsh. & Borza	Synonym		TRO
Polygonum tubulosum Boiss.	Synonym		TRO
Polygonum tubulosum var. tibetica Hook. f.	Synonym		TRO
Polygonum tumidum Delile	Unresolved		WCSP (in review)
Polygonum tumidum Aucher ex Meisn.	Unresolved		WCSP (in review)
Polygonum turgidum Thuill.	Accepted		TRO
Polygonum turkestanicum Sumnev.	Unresolved		WCSP (in review)
Polygonum typhoniifolium Hance	Synonym		TRO
Polygonum umbellatum (Houtt.) Koidz.	Unresolved		WCSP (in review)
Polygonum umbrosum Sam.	Accepted		TRO
Polygonum undulatum Murray [Illegitimate]	Synonym		WCSP (in review)
Polygonum undulatum Berg.	Accepted		TRO
Polygonum uniflorum Y.X. Ma & Y.T. Zhao	Synonym		TRO
Polygonum unifolium Small ex Rydb.	Synonym		TRO
Polygonum urgellense Sennen	Unresolved		WCSP (in review)
Polygonum urophyllum Bureau & Franch.	Synonym		TRO
Polygonum uruguense H. Gross	Synonym		TRO
Polygonum urumqiense F.Z. Li, Y.T. Hou & F.J. Lu	Accepted		TRO
Polygonum ussuriense (Regel) Nakai	Synonym		TRO
Polygonum utahensis Brenckle & Cottam	Accepted		TRO
Polygonum utriculatum Remy	Synonym		TRO
Polygonum utriculosum Tikovsky	Synonym		TRO
Polygonum uvifera L.	Synonym		TRO
Polygonum vacciniifolium Wall. ex Meisn.	Accepted		TRO
Polygonum vacciniifolium var. flagelliforme Wall. ex Meisn.	Synonym		TRO
Polygonum vacciniifolium var. medium Wall. ex Meisn.	Synonym		TRO
Polygonum vacciniifolium var. obtusifolium Wall. ex Meisn.	Synonym		TRO
Polygonum vagans Greene	Unresolved		WCSP (in review)
Polygonum valdivianum Phil.	Unresolved		WCSP (in review)
Polygonum valerii A.K.Skvortsov	Unresolved		WCSP (in review)
Polygonum vanictianum H.Lév.	Unresolved		WCSP (in review)
Polygonum vaniotianum (H. Lév.) H. Lév.	Synonym		TRO
Polygonum varians Kuntze	Unresolved		WCSP (in review)
Polygonum vellosoi Toledo	Unresolved		WCSP (in review)
Polygonum venantianum Clementi	Synonym		WCSP (in review)
Polygonum vernale (Nakai) Makino & Nemoto	Unresolved		WCSP (in review)
Polygonum vernum Raf.	Unresolved		WCSP (in review)
Polygonum verticillatum Biroli ex Colla	Unresolved		WCSP (in review)
Polygonum vestitum (Greene) Fedde	Unresolved		WCSP (in review)
Polygonum vesulum Gand.	Unresolved		WCSP (in review)
Polygonum villosulum (Greene) Fedde	Unresolved		WCSP (in review)
Polygonum virgatum Cham. & Schltdl.	Synonym		TRO
Polygonum virginianum L.	Synonym		TRO
Polygonum virginianum var. filiforme (Thunb.) Nakai	Synonym		TRO
Polygonum virginianum var. filiforme (Thunb.) Merr.	Synonym		TRO
Polygonum virginianum var. glaberrimum (Fernald) Steyerm.	Unresolved		TRO
Polygonum virginianum f. glabratum Matsuda	Synonym		TRO
Polygonum viridiflorum Poir.	Synonym		TRO
Polygonum viscoferum Makino	Accepted		TRO
Polygonum viscoferum var. robustum Makino	Synonym		TRO
Polygonum viscosum Buch.-Ham. ex D. Don	Accepted		TRO
Polygonum viscosum var. minus Hook. f.	Synonym		TRO
Polygonum viviparum L.	Synonym		WCSP (in review)
Polygonum viviparum f. alpinum (Wahlenb.) Polunin	Unresolved		TRO
Polygonum viviparum var. alpinum Wahlenb.	Synonym		TRO
Polygonum viviparum var. angustum A.J. Li	Synonym		TRO
Polygonum viviparum var. macounii (Small) Hultén	Synonym		TRO
Polygonum viviparum var. tenuifolium (H.W. Kung) Y.L. Liu	Unresolved		TRO
Polygonum viviparum var. viviparum	Unresolved		TRO
Polygonum vladimiri Czerep.	Accepted		TRO
Polygonum volcanicum Benth.	Synonym		WCSP (in review)
Polygonum volchovense Tzvelev	Unresolved		WCSP (in review)
Polygonum volubile Turcz.	Synonym		TRO
Polygonum vulgare Gueldenst.	Unresolved		WCSP (in review)
Polygonum vvedenskyi SUMNER	Accepted		TRO
Polygonum wallichii Meisn.	Accepted		TRO
Polygonum wardii (Greene) Fedde	Unresolved		WCSP (in review)
Polygonum watsonii Small	Synonym		WCSP (in review)
Polygonum wellensii De Wild.	Unresolved		WCSP (in review)
Polygonum weyrichii F. Schmidt	Accepted		TRO
Polygonum weyrichii var. alpinum Maxim. ex Franch. & Sav.	Synonym		TRO
Polygonum yamatutae Kitag.	Synonym		TRO
Polygonum yatagaianum T.Mori	Unresolved		WCSP (in review)
Polygonum yokusaianum Makino	Synonym		TRO
Polygonum yunnanense (H. Gross) H. Lév.	Synonym		TRO
Polygonum zakirovii Czevrenidi	Unresolved		TRO
Polygonum zaravschanicum Zak.	Accepted		TRO
Polygonum zeaense Kom.	Synonym		TRO
Polygonum zigzag H. Lév. & Vaniot	Synonym		TRO
Polygonum zippelii Meisn.	Unresolved		WCSP (in review)
Polygonum zonulatum Noronha	Unresolved		WCSP (in review)
Polygonum zuccarinii Small	Synonym		TRO