| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Ceratophyllaceae | Ceratophyllum australe | Ponds, pools, slow-moving streams, solution holes in pine rocklands. | Se. NC south to s. FL and Panhandle FL, and in the West Indies; also in s. Mexico, Central America, n. South America, with apparent disjunctions in c. South America and the Galapagos Islands | ||
| Ceratophyllaceae | Ceratophyllum demersum | Coontail | Ponds, pools, slow-moving streams. | NL (Newfoundland) west to AK, south to s. FL, TX, CA, and south through the West Indies and Mexico and Central America to South America. |  (c) Joseph, Aubert - CC-BY |
| Ceratophyllaceae | Ceratophyllum echinatum | Ponds, pools, slow-moving streams. | NL (Newfoundland) west to ON and n. MN, south to c. peninsular FL and e. TX; also in BC, WA, and OR. |  (c) Niernberger, Trix - CC0 |