Parent species:
Polygonum amphibium

Synonyms:
Persicaria amphibia var. stipulacea
Persicaria mesochora
Persicaria nebraskensis
Polygonum amphibium ssp. laevimarginatum
Polygonum amphibium var. hartwrightii
Polygonum coccineum var. rigidulum
Polygonum fluitans
Polygonum hartwrightii
Polygonum inundatum
Polygonum natans