| Polygonaceae | |
Persicaria hydropiperoides var. bushiana
| (Stanford) Mohlenbr. | Phytoneuron 2015-67: 3 | 2015 |
| Polygonaceae | ** |
Persicaria hydropiperoides var. bushiana
| (Stanford) Mohlenbr. | Vasc. Fl. Illinois, ed. 4 501 | 2014 |
| Polygonaceae | |
Persicaria hydropiperoides var. hydropiperoides
| | | |
| Polygonaceae | ** |
Persicaria hydropiperoides var. opelousana
| (Riddell) J.S. Wilson | | |
| Polygonaceae | |
Persicaria hydropiperoides var. setaceum
| (Baldwin) Gleason | !The New Britt. and Brown. Illustr. Fl. Nordeast. U.S. and Canada 2: 82 | 1952 |