Persicaria amphibia var. emersa (Michx.) J.C.Hickman
Chulusium natans Raf.
Polygonum salicifolium Schur
Polygonum wardii (Greene) Fedde
Persicaria spectabilis Greene
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 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
Persicaria otophylla Greene
Polygonum grandifolium (Greene) Fedde
Polygonum amphibium var. natans Leyss.
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
Polygonum natans f. hartwrightii (A.Gray) Stanford
Polygonum fluitans f. hartwrightii (A.Gray) G.N.Jones
Persicaria plattensis Greene
Persicaria vestita Greene
Polygonum hesperium (Greene) Fedde
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 propinquum (Greene) Fedde
Polygonum remotum (Greene) Fedde
Polygonum muhlenbergii S.Watson
Persicaria covillei Greene
Persicaria emersa (Michx.) Small
Polygonum purpureum Gilib.
Persicaria remota Greene
Polygonum amphibium subvar. rigidulum Farw.
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 coccineum f. terrestre (Willd.) Stanford
Persicaria laetevirens Greene
Polygonum aquaticum A.Gray ex Meisn.
Chulusium amphibium (L.) Raf.
Polygonum natans var. insigne (Greene) Stanford
Polygonum emersum (Michx.) Britton
Polygonum coccineum var. asprellum Fedde
Persicaria canadensis Greene
Persicaria plantaginea Greene
Polygonum subcoriaceum (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
Persicaria alismifolia Greene
Persicaria pratincola Greene
Persicaria purpurata Greene
Polygonum amphibium subsp. laevimarginatum Hultén
Polygonum mesochorum (Greene) Fedde
Persicaria wardii Greene
Persicaria hartwrightii (A.Gray) Greene
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 plattense (Greene) Fedde
Persicaria amphibia subsp. laevimarginata (Hultén) Soják
Persicaria hartwrightii f. hirtuosa (Farw.) D.Löve & J.-P.Bernard
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 langloisii (Greene) Fedde
Persicaria insignis Greene
Persicaria muhlenbergii (S.Watson) Small
Polygonum franciscanum (Greene) Fedde
Persicaria propinqua Greene
Polygonum muhlenbergii var. terrestre Trel.
Polygonum amphibium subvar. terreum Farw.
Persicaria cygnea Greene
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 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 purpuratum (Greene) Fedde
Polygonum natans f. genuinum Stanford
Polygonum pratincola (Greene) Fedde
Polygonum coccineum Muhl. ex Willd.
Persicaria asclepiadea Greene
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.