| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Araceae | Wolffiella gladiata | Mud-midgets | Ponds, ditches, beaver-ponds millponds, tidal waters. | MA and n. IL (s. WI?) south to s. FL and TX; Mexico. |  |
| Araceae | Wolffiella lingulata | Ponds and sloughs. | Peninsular FL; w. LA to s. TX; CA; Mexico; West Indies; Central America, South America. |  | |
| Araceae | Wolffiella oblonga | Quiet waters. | N. peninsular FL, MS (?), LA, TX, south to Mexico, Central America, South America; West Indies. |