Taxa: Polygonum amphibium, Polygonum amphibium var. stipulaceum (Polygonum amphibium ssp. laevimarginatum, Persicaria amphibia var. stipulacea, Polygonum amphibium var. hartwrightii, Polygonum coccineum var. rigidulum, Persicaria mesochora, Persicaria nebraskensis, Polygonum fluitans, Polygonum hartwright
... (show all)ii, Polygonum inundatum, Polygonum natans), Polygonum amphibium var. aquaticum, Polygonum amphibium var. natans