| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Cyperaceae | Eleocharis olivacea var. olivacea | Olive Spikerush | Coastal Plain ponds, pools, other wet, sandy or peaty habitats. | Nova Scotia west to Minnesota, south to Florida and Texas. |  (c) Ward, Scott G - CC-BY |
| Cyperaceae | Eleocharis olivacea var. reductiseta | Tidal rivers draining from the NJ pine barrens. On sand, gravel, or mud-covered sands of freshwater to slightly brackish intertidal zones of rivers. | Endemic to s. New Jersey (as far as is known). |