Polygonum amphibium subsp. hartwrightii (A.Gray) Farw. subspecies synonym

Persicaria emersa (Michx.) Small species synonym

Polygonum amphibium f. emersum (Michx.) Farw. form synonym

Persicaria amphibia var. amphibia variety accepted

Polygonum amphibium f. hartwrightii (A.Gray) S.F.Blake form synonym

Polygonum coccineum Muhl. ex Willd. species proparte synonym

Polygonum amphibium var. stipulaceum (Coleman) Fernald variety synonym

Polygonum rigidulum Gand. species synonym

Polygonum natans (Michx.) Eaton species heterotypic synonym

Polygonum muhlenbergii S.Watson species synonym

Polygonum coccineum Muhl. ex Willd. species proparte synonym

Persicaria mesochora Greene species synonym

Persicaria coccinea (Muhl. ex Willd.) Greene species synonym

Polygonum fluitans Eaton species synonym

Persicaria fluitans (Eaton) Greene species heterotypic synonym

Polygonum coccineum var. coccineum variety synonym

Persicaria oregana Greene species synonym

Persicaria natans (Michx.) Moldenke species proparte synonym

Polygonum amphibium var. amphibium variety accepted

Persicaria hartwrightii (A.Gray) Greene species synonym

Polygonum oreganum (Greene) Fedde species synonym

Polygonum subcoriaceum (Greene) Fedde species synonym

Polygonum ophiophilum (Greene) Fedde species synonym

Polygonum novae-angliae (Greene) Fedde species synonym

Polygonum wardii (Greene) Fedde species synonym

Polygonum natans var. insigne (Greene) Stanford variety synonym

Polygonum natans f. hartwrightii (A.Gray) Stanford form synonym

Polygonum cusickii (Greene) Fedde species synonym

Polygonum muriculatum (Greene) Fedde species synonym

Polygonum covillei (Greene) Fedde species synonym

Polygonum muhlenbergii var. terrestre Trel. variety synonym

Polygonum villosulum (Greene) Fedde species synonym

Polygonum muhlenbergii f. natans Wiegand form synonym

Polygonum vestitum (Greene) Fedde species synonym

Polygonum coccineum var. terrestre Willd. variety proparte synonym

Polygonum coccineum var. rigidulum (E.Sheld.) Stanford variety synonym

Polygonum coccineum var. pratincola (Greene) Stanford variety synonym

Polygonum coccineum f. natans (Wiegand) Stanford form synonym

Polygonum coccineum var. asprellum Fedde variety synonym

Polygonum coccineum var. aquaticum Pursh variety synonym

Polygonum mesochorum (Greene) Fedde species synonym

Polygonum chelanicum (Greene) Fedde species synonym

Polygonum canadense (Greene) Fedde species synonym

Polygonum lonchophyllum (Greene) Fedde species synonym

Polygonum laurinum (Greene) Fedde species synonym

Polygonum langloisii (Greene) Fedde species synonym

Polygonum laetevirens (Greene) Fedde species synonym

Polygonum iowense (Rydb.) Cratty species synonym

Polygonum inundatum Raf. species heterotypic synonym

Polygonum insigne (Greene) Fedde species synonym

Polygonum amphibium var. marginatum Farw. variety synonym

Polygonum amphibium var. longispicatum Peck variety synonym

Polygonum asclepiadeum (Greene) Fedde species synonym

Polygonum rothrockii (Greene) Fedde species synonym

Polygonum arenicola Suksd. species synonym

Polygonum homalostachyum (Greene) Fedde species synonym

Polygonum remotum (Greene) Fedde species synonym

Polygonum hesperium (Greene) Fedde species synonym

Polygonum amphibium var. stipulaceum N.Coleman variety synonym

Polygonum amphibium f. simile Fernald form synonym

Polygonum amphibium var. natans Michx. variety heterotypic synonym

Polygonum amphibium f. hirtuosum (Farw.) Fernald form synonym

Polygonum amphibium var. hartwrightii (A.Gray) Bissell variety synonym

Polygonum hartwrightii A.Gray species synonym

Polygonum abscissum (Greene) Fedde species synonym

Polygonum aboriginum (Greene) Fedde species synonym

Polygonum amphibium f. fluitans (Eaton) Fernald form synonym

Polygonum amphibium var. emersum Michx. variety proparte synonym

Polygonum purpuratum (Greene) Fedde species heterotypic synonym

Polygonum amphibium var. coccineum (Muhl. ex Willd.) Farw. variety synonym

Polygonum amphibium var. aquaticum Hook., 1821 variety doubtful

Polygonum ammophilum (Greene) Fedde species synonym

Polygonum grandifolium (Greene) Fedde species synonym

Polygonum alismifolium (Greene) Fedde species synonym

Polygonum psychrophilum (Greene) Fedde species synonym

Polygonum propinquum (Greene) Fedde species heterotypic synonym

Polygonum pratincola (Greene) Fedde species synonym

Polygonum porteri (Greene) Fedde species synonym

Polygonum franciscanum (Greene) Fedde species synonym

Polygonum fluitans f. hartwrightii (A.Gray) G.N.Jones form synonym

Polygonum plattense (Greene) Fedde species synonym

Polygonum plantagineum (Greene) Fedde species synonym

Polygonum fistulosum (Greene) Fedde species synonym

Polygonum emersum (Michx.) Britton species synonym

Polygonum otophyllum (Greene) Fedde species synonym

Persicaria villosula Greene species synonym

Persicaria tanaophylla Nieuwl. species synonym

Persicaria subcoriacea Greene species synonym

Persicaria rothrockii Greene species synonym

Persicaria rigidula (E.Sheld.) Greene species synonym

Persicaria remota Greene species synonym

Persicaria purpurata Greene species synonym

Persicaria psychrophila Greene species synonym

Persicaria propinqua Greene species synonym

Persicaria pratincola Greene species synonym

Persicaria porteri Greene species synonym

Persicaria plattensis Greene species synonym

Persicaria plantaginea Greene species synonym

Persicaria otophylla Greene species synonym

Persicaria oregana var. ancoviana Nieuwl. variety synonym

Persicaria ophiophila Greene species synonym

Persicaria novae-angliae Greene species synonym

Persicaria nebrascensis Greene species synonym

Persicaria natans f. hartwrightii (A.Gray) Moldenke form synonym

Persicaria muriculata Greene species synonym

Persicaria muhlenbergii (S.Watson) Small species synonym

Persicaria mesochora var. arenicola Nieuwl. variety synonym

Persicaria lonchophylla Greene species synonym

Persicaria laurina Greene species synonym

Persicaria langloisii Greene species synonym

Persicaria laetevirens Greene species synonym

Persicaria iowensis Rydb. species synonym

Persicaria insignis Greene species synonym

Persicaria homalostachya Greene species synonym

Persicaria hesperia Greene species synonym

Persicaria hartwrightii f. similis (Fernald) D.Löve & J.-P.Bernard form synonym

Persicaria hartwrightii f. hirtuosa (Farw.) D.Löve & J.-P.Bernard form synonym

Persicaria hartwrightii f. fluitans (Eaton) Á.Löve & D.Löve form synonym

Persicaria grandifolia Greene species synonym

Persicaria aboriginum Greene species synonym

Persicaria franciscana Greene species synonym

Persicaria fistulosa Greene species synonym

Persicaria emersa var. asprella Nieuwl. variety synonym

Persicaria cygnea Greene species synonym

Persicaria cusickii Greene species synonym

Persicaria covillei Greene species synonym

Persicaria coccinea subsp. pratincola (Greene) Á.Löve & D.Löve subspecies synonym

Persicaria coccinea var. asprella Greene variety synonym

Persicaria chelanica Greene species synonym

Persicaria carictorum Nieuwl. species synonym

Persicaria canadensis Greene species synonym

Persicaria asclepiadea Greene species synonym

Persicaria andrewsii Greene species synonym

Persicaria amphibium f. fluitans (Eaton) Fernald form synonym

Persicaria amphibia var. stipulacea (N.Coleman) H.Hara variety accepted

Persicaria amphibia subsp. laevimarginata (Hultén) Soják subspecies synonym

Persicaria amphibia var. emersa (Michx.) J.C.Hickman variety accepted

Persicaria ammophila Greene species synonym

Persicaria alismifolia Greene species synonym

Persicaria abscissa Greene species synonym

Persicaria wardii Greene species synonym

Persicaria vestita Greene species synonym

Persicaria spectabilis Greene species heterotypic synonym

Polygonum coccineum var. terrestre Willdenow ex Link variety synonym

Polygonum rigidulum E.Sheld. species synonym

Polygonum amphibium subsp. laevimarginatum Hultén subspecies synonym

Polygonum amphibium f. hirtuosum Farw. form synonym

Polygonum coccineum f. terrestre (Willd.) Stanford form synonym