| earleaf acacia | Acacia auriculiformis | Non-native Plant |
| earleaf greenbrier | Smilax auriculata | Native Plant |
East Indian hygrophila
|
Hygrophila polysperma | Non-native Plant |
| Eastern gama grass, Fakahatchee grass | Tripsacum dactyloides | Native Plant |
| eastern poison ivy | Toxicodendron radicans | Native Plant |
eastern purple bladderwort
|
Utricularia purpurea | Native Plant |
eel grass, tape grass
|
Vallisneria americana | Native Plant |
| Egyptian paspalidium | Paspalidium geminatum | Native Plant |
elderberry
|
Sambucus nigra (syn. S. canadensis) | Native Plant |
| elephant ear | Xanthosoma sagittifolium | Non-native Plant |
elephant grass, napier grass
|
Pennisetum purpureum | Non-native Plant |
| Elliott's love grass | Eragrostis elliottii | Native Plant |
| Elliott's yellow-eyed-grass | Xyris elliottii | Native Plant |
| elodea | Elodea canadensis | Native Plant |
Eurasian water-milfoil
|
Myriophyllum spicatum | Non-native Plant |
| European frog-bit | Hydrocharis morsus-ranae | Non-native Plant |