American water-willow
- kingdom: Plantae
- phylum: Tracheophyta
- class: Magnoliopsida
- order: Lamiales
- family: Acanthaceae
- genus: Justicia
- species: Justicia americana
- Canada
Northport
Riverside
Tuscaloosa
AlabamaBourbonnais
Bradley
Manhattan
Wilmington
IllinoisAugusta
KansasFlat Rock
MichiganEdmond
OklahomaColumbia
Wrightsville
PennsylvaniaDover
TennesseeWashington, D. C.
Washington, D.C.
United States