Canada's Plant Hardiness Site

Polygonaceae buckwheat family
Persicaria amphibia (L.) Gray
En: amphibious knotweed;, amphibious bistort, water smartweed, swamp smartweed;
Fr: renouee aquatique, persicaire amphibie, renouee amphibi

• [=Chulusium amphibium (L.) Raf.]
• [=Persicaria amphibia (L.) Gray var. emersa (Michx.) J.C.Hickman]
• [=Persicaria amphibia (L.) Gray var. natans (Michx.) Munshi & Javeid]
• [=Persicaria amphibia (L.) Gray var. stipulacea (N.Coleman) H.Hara]
• [=Persicaria amphibia (L.) Gray var. terrestris (Leyss.) Munshi & Javeid]
• [=Persicaria amurensis (Korsh.) Nieuwl.]
• [=Persicaria coccinea (Muhl. ex Willd.) Greene]
• [=Persicaria coccinea (Muhl. ex Willd.) Greene subsp. pratincola (Greene) Á.Löve & D.Löve]
• [=Persicaria fluitans (Eaton) Montandon 1856, non Greene 1904]
• [=Persicaria hartwrightii (A.Gray) Greene]
• [=Persicaria hartwrightii (A.Gray) Greene forma fluitans (Eaton) Á.Löve & D.Löve]
• [=Persicaria hartwrightii (A.Gray) Greene forma hirtuosa (Farw.) D.Love & J.-P.Bernard]
• [=Persicaria hartwrightii (A.Gray) Greene forma similis (Fernald) D.Love & J.-P.Bernard]
• [=Persicaria mesochora Greene]
• [=Persicaria muhlenbergia (Meisn.) Small]
• [=Persicaria natans (Michx.) Moldenke]
• [=Persicaria natans (Michx.) Moldenke forma hartwrightii (A.Gray) Moldenke]
• [=Persicaria nebraskensis Greene]
• [=Polygonum amphibium L. - basionym]
• [=Polygonum amphibium L. forma emersum (Michx.) Farw]
• [=Polygonum amphibium L. forma fluitans (Eaton) Fernald]
• [=Polygonum amphibium L. forma hartwrightii (A.Gray) S.F.Blake]
• [=Polygonum amphibium L. forma hirtuosum Farw.]
• [=Polygonum amphibium L. forma natans (Michx.) Stanford]
• [=Polygonum amphibium L. forma simile Fernald]
• [=Polygonum amphibium L. forma terrestre (Leyss.) S.F.Blake]
• [=Polygonum amphibium L. subsp. amurense (Korsh.) Hultén]
• [=Polygonum amphibium L. subsp. aquaticum Ehrh.]
• [=Polygonum amphibium L. subsp. laevimarginatum Hultén]
• [=Polygonum amphibium L. subvar. hartwrightii (A.Gray) Farw.]
• [=Polygonum amphibium L. subvar. hirtuosum (Farw.) Farw.]
• [=Polygonum amphibium L. var. amurense Korsh.]
• [=Polygonum amphibium L. var. aquaticum Torr.]
• [=Polygonum amphibium L. var. coccineum (Muhl. ex Willd.) Farw.]
• [=Polygonum amphibium L. var. emersum Michx.]
• [=Polygonum amphibium L. var. hartwrightii (A.Gray) Bissell]
• [=Polygonum amphibium L. var. marginatum Farw]
• [=Polygonum amphibium L. var. muehlenbergii Meisn.]
• [=Polygonum amphibium L. var. natans Michx.]
• [=Polygonum amphibium L. var. stipulaceum N.Coleman]
• [=Polygonum amphibium L. var. terrestre Leyss.]
• [=Polygonum amphibium L. var. terrestre Willd., nom. illeg. hom., non Leyss.]
• [=Polygonum amphibium L. var. vestitum Hemsl.]
• [=Polygonum cardiophyllum Gand.]
• [=Polygonum coccineum Muhl. ex Willd.]
• [=Polygonum coccineum Muhl. ex Willd. forma natans (Wiegand) Stanford]
• [=Polygonum coccineum Muhl. ex Willd. forma terrestre (Willd.) Stanford]
• [=Polygonum coccineum Muhl. ex Willd. var. pratincola (Greene) Standford]
• [=Polygonum coccineum Muhl. ex Willd. var. rigidulum (E.Sheld.) Stanford]
• [=Polygonum emersum (Michx.) Britton]
• [=Polygonum fluitans Eaton]
• [=Polygonum fluitans Eaton forma hartwrightii (A.Gray) G.N.Jones]
• [=Polygonum hartwrightii A.Gray]
• [=Polygonum inundatum Raf.]
• [=Polygonum lanceolatum Gand.]
• [=Polygonum longifolium Gand.]
• [=Polygonum muhlenbergia (Meisn.) S.Watson]
• [=Polygonum natans (Michx.) Eaton]
• [=Polygonum natans (Michx.) Eaton forma genuinum Stanford]
• [=Polygonum natans (Michx.) Eaton forma hartwrightii (A.Gray) Stanford]
• [=Polygonum platyphyllum Gand.]
• [=Polygonum rigidulum E. Sheld.]
• [=Polygonum terrestre Hegetschw.]
• [=Polygonum terrestre (Willd.) B.S.P., nom. illeg. hom., non Hegetschw.]