| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|
| Elatinaceae | Elatine ambigua | Asian Waterwort | Ponds, marshes. | Native of s. and se. Asia. | 
|
| Elatinaceae | Elatine americana | American Waterwort | Tidal flats, lakes. | Widespread in ne. United States, s. to NC and MO. The only known site for this species in NC is an artificial lake; it is uncertain whether it should be considered native or introduced. | 
|
| Elatinaceae | Elatine brachysperma | Shortseed Waterwort | Mud or shallow water. | Widely scattered in North America south to c. Mexico. It has been reported for nc. GA (Jones & Coile 1988). | 
|
| Elatinaceae | Elatine heterandra | | Wet mud of temporary pools. | S. TX, nw. NM, and CA. | |
| Elatinaceae | Elatine minima | Tiny Waterwort | Tidal flats, lakes, mud flats, pools on granite flatrocks. | First found in NC in 1990, E. minima is widespread in ne. United States, south to VA, NC, and SC (Horn, pers. comm., 2004). The only known site for this species in NC is the spillway of an artificial lake (Lake Butner, Granville County); it is uncertain whether it should be considered native or exotic in NC. It may have been introduced by waterfowl or humans. | 
|
| Elatinaceae | Elatine rubella | Three-stamen Waterwort | Ponds. | Sometimes reported for our area, but all reports apparently based on misidentifications. | |
| Elatinaceae | Elatine triandra | Three-stamened Waterwort | Shores, pools. | Apparently native of e. and se. Asia, but the native distributions of the cryptic and under-documented species of Elatine makes interpretation difficult. | 
|