Polygonum spectabile Fedde
Persicaria tanaophylla Nieuwl.
Persicaria porteri Greene
Polygonum fluitans Eaton
Persicaria villosula Greene
Polygonum covillei (Greene) Fedde
Persicaria nebrascensis Greene
Polygonum amphibium f. hartwrightii (A.Gray) S.F.Blake
Polygonum ammophilum (Greene) Fedde
Polygonum arenicola Suksd.
Polygonum amphibium var. marginatum Farw.
Persicaria ammophila Greene
Polygonum amphibium f. angustifolium Kuntze
Persicaria cusickii Greene
Polygonum amphibium subvar. emersum (Michx.) Farw.
Polygonum cardiophyllum Gand.
Polygonum otophyllum (Greene) Fedde
Persicaria emersa var. asprella Nieuwl.
Polygonum plantagineum (Greene) Fedde
Persicaria aboriginum Greene
Polygonum fistulosum (Greene) Fedde
Persicaria rigidula Greene
Persicaria grandifolia Greene
Polygonum amphibium subsp. aquaticum (Leyss.) Ehrh.
Persicaria otophylla Greene
Polygonum grandifolium (Greene) Fedde
Polygonum amphibium var. amurense Korsh.
Polygonum amphibium var. natans Leyss.
Persicaria spectabilis Greene
Polygonum amphibium f. fluitans (Eaton) Fernald
Persicaria coccinea var. asprella Greene
Persicaria langloisii Greene
Persicaria novae-angliae Greene
Polygonum lonchophyllum (Greene) Fedde
Polygonum iowense (Rydb.) Cratty
Polygonum muhlenbergii f. natans Wiegand
Polygonum cusickii (Greene) Fedde
Chulusium natans Raf.
Polygonum natans f. hartwrightii (A.Gray) Stanford
Polygonum coccineum f. natans (Wiegand) Stanford
Polygonum fluitans f. hartwrightii (A.Gray) G.N.Jones
Persicaria plattensis Greene
Persicaria vestita Greene
Persicaria amphibia var. emersa (Michx.) J.C.Hickman
Polygonum hesperium (Greene) Fedde
Persicaria amurensis Nieuwl.
Polygonum amphibium var. emersum Michx.
Persicaria natans Moldenke
Persicaria natans f. hartwrightii (A.Gray) Moldenke
Polygonum abscissum (Greene) Fedde
Polygonum amphibium f. emersum (Michx.) Farw.
Persicaria subcoriacea Greene
Polygonum amphibium var. longispicatum Peck
Polygonum asclepiadeum (Greene) Fedde
Persicaria fluitans Montandon
Polygonum laurinum (Greene) Fedde
Persicaria hesperia Greene
Persicaria mesochora Greene
Polygonum novae-angliae (Greene) Fedde
Polygonum remotum (Greene) Fedde
Polygonum muhlenbergii S.Watson
Persicaria covillei Greene
Polygonum propinquum (Greene) Fedde
Persicaria emersa (Michx.) Small
Polygonum purpureum Gilib.
Persicaria remota Greene
Polygonum amphibium var. vestitum Hemsl.
Polygonum amphibium subvar. rigidulum Farw.
Polygonum terrestre (Leyss.) Hegetschw.
Polygonum amphibium subsp. terrestre (Leyss.) Ehrh.
Persicaria lonchophylla Greene
Polygonum amphibium f. hirtuosum Farw.
Persicaria hartwrightii f. fluitans (Eaton) Á.Löve & D.Löve
Polygonum amphibium var. muehlenbergii Meisn.
Persicaria oregana var. ancoviana Nieuwl.
Polygonum amphibium f. simile Fernald
Polygonum amphibium var. aquaticum Leyss.
Polygonum coccineum f. terrestre (Willd.) Stanford
Persicaria coccinea (Muhl. ex Willd.) Greene
Persicaria laetevirens Greene
Persicaria amphibia subsp. amurensis (Korsh.) Soják
Polygonum aquaticum A.Gray ex Meisn.
Polygonum lanceolatum Gand.
Chulusium amphibium (L.) Raf.
Polygonum natans var. insigne (Greene) Stanford
Persicaria amphibia var. terrestris (Leyss.) Gray
Polygonum emersum (Michx.) Britton
Polygonum coccineum var. asprellum Fedde
Persicaria canadensis Greene
Persicaria plantaginea Greene
Polygonum subcoriaceum (Greene) Fedde
Polygonum wardii (Greene) Fedde
Polygonum vestitum (Greene) Fedde
Polygonum amphibium var. coccineum (Muhl. ex Willd.) Farw.
Persicaria iowensis Rydb.
Persicaria muriculata Greene
Polygonum laetevirens (Greene) Fedde
Polygonum aboriginum (Greene) Fedde
Persicaria psychrophila Greene
Polygonum natans Hegetschw.
Persicaria andrewsii Greene
Polygonum amphibium var. hartwrightii (A.Gray) Bissell
Persicaria fistulosa Greene
Polygonum ophiophilum (Greene) Fedde
Persicaria homalostachya Greene
Polygonum psychrophilum (Greene) Fedde
Persicaria coccinea subsp. pratincola (Greene) Á.Löve & D.Löve
Polygonum chelanicum (Greene) Fedde
Polygonum longifolium Gand.
Persicaria alismifolia Greene
Persicaria pratincola Greene
Persicaria purpurata Greene
Polygonum amphibium f. terrestre (Leyss.) Regel
Polygonum amphibium subsp. laevimarginatum Hultén
Polygonum mesochorum (Greene) Fedde
Persicaria wardii Greene
Persicaria hartwrightii (A.Gray) Greene
Polygonum amphibium var. maritimum Mert. & W.D.J.Koch
Persicaria rothrockii Greene
Persicaria laurina Greene
Persicaria oregana Greene
Persicaria franciscana Greene
Polygonum amphibium subvar. hartwrightii (A.Gray) Farw.
Polygonum porteri (Greene) Fedde
Polygonum muriculatum (Greene) Fedde
Polygonum rigidulum Gand.
Polygonum amphibium var. decumbens Klett & Richt.
Polygonum plattense (Greene) Fedde
Persicaria amphibia subsp. laevimarginata (Hultén) Soják
Persicaria amphibia var. amurensis (Korsh.) H.Hara
Polygonum amphibium var. terrestre Leyss.
Persicaria hartwrightii f. hirtuosa (Farw.) D.Löve & J.-P.Bernard
Polygonum setiferum Gand.
Polygonum coccineum var. rigidulum Stanford
Persicaria chelanica Greene
Polygonum canadense (Greene) Fedde
Polygonum villosulum (Greene) Fedde
Persicaria mesochora var. arenicola Nieuwl.
Polygonum amphibium subvar. hirtuosum (Farw.) Farw.
Polygonum amphibium f. serrulatum H.Rosend.
Polygonum langloisii (Greene) Fedde
Persicaria amphibia var. natans (Leyss.) Munshi & Javeid
Persicaria insignis Greene
Persicaria muhlenbergii (S.Watson) Small
Polygonum franciscanum (Greene) Fedde
Persicaria propinqua Greene
Persicaria amphibia var. stipulacea (N.Coleman) H.Hara
Polygonum amphibium subsp. amurense (Korsh.) Hultén
Polygonum muhlenbergii var. terrestre Trel.
Polygonum amphibium subvar. terreum Farw.
Persicaria cygnea Greene
Polygonum tenuinaevum Gand.
Polygonum rothrockii (Greene) Fedde
Persicaria abscissa Greene
Polygonum oreganum (Greene) Fedde
Persicaria ophiophila Greene
Polygonum coccineum var. terrestre Willd.
Polygonum homalostachyum (Greene) Fedde
Polygonum amphibium var. stipulaceum N.Coleman
Polygonum amphibium f. aquaticum (Leyss.) Regel
Polygonum hartwrightii A.Gray
Polygonum alismifolium (Greene) Fedde
Polygonum coccineum var. aquaticum Pursh
Polygonum insigne (Greene) Fedde
Persicaria coccinea f. natans (Wiegand) D.Löve & J.-P.Bernard
Polygonum natans f. genuinum Stanford
Polygonum pratincola (Greene) Fedde
Polygonum coccineum Muhl. ex Willd.
Persicaria asclepiadea Greene
Persicaria amphibia f. terrestris (Leyss.) Kitag.
Polygonum amphibium L.
Persicaria hartwrightii f. similis (Fernald) D.Löve & J.-P.Bernard
Polygonum coccineum var. pratincola (Greene) Stanford
Persicaria carictorum Nieuwl.
Chulusium fluitans Raf.
Polygonum purpuratum (Greene) Fedde
Polygonum salicifolium Schur
Polygonum amurense (Korsh.) Vorosch.