| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Pontederiaceae | Pontederia cordata var. cordata | Heartleaf Pickerelweed | Swamps, seepage areas, marshes, pond-shores, lake-shores. | NS west to MN, south to s. FL and TX; Belize; s. Brazil, Argentina, Paraguay, and Uruguay. |  |
| Pontederiaceae | Pontederia cordata var. lancifolia | Lanceleaf Pickerelweed | Marshes, pond-shores, lake-shores. | S. MA (alleged to occur as far north as ME, but these reports may be entirely based on misidentifications of var. cordata) to s. FL, west to e. TX, mostly on the Coastal Plain, with a few records around the Great Lakes; Cuba; s. Brazil, Argentina, Paraguay, and Uruguay. |  |
| Pontederiaceae | Pontederia rotundifolia | Tropical Pickerelweed | S. Mexico to Argentina. |