Persicaria hydropiperoides (Michx.) Small
Persicaria hydropiperoides (Michx.) Small var. breviciliata (Fernald) C.F. Reed
Persicaria hydropiperoides (Michx.) Small var. euronotora (Fernald) C.F. Reed
Persicaria hydropiperoides (Michx.) Small var. opelousana (Riddell ex Small) J.S. Wilson
Persicaria opelousana (Riddell ex Small) Small
Persicaria paludicola Small
Persicaria persicarioides (Kunth) Small
Polygonum hydropiperoides Michx. var. adenocalyx (Stanford) Gleason
Polygonum hydropiperoides Michx. var. asperifolium Stanford
Polygonum hydropiperoides Michx. var. breviciliatum Fernald
Polygonum hydropiperoides Michx. var. bushianum Stanford
Polygonum hydropiperoides Michx. var. digitatum Fernald
Polygonum hydropiperoides Michx. var. euronotorum Fernald
Polygonum hydropiperoides Michx. var. opelousanum (Riddell ex Small) Riddell ex W. Stone
Polygonum hydropiperoides Michx. var. psilostachyum H. St. John
Polygonum hydropiperoides Michx. var. strigosum (Small) Stanford
Polygonum opelousanum Riddell ex Small
Polygonum opelousanum Riddell ex Small var. adenocalyx Stanford
Polygonum persicarioides Kunth