Submerged Plants Submerged plants are rooted plants with flaccid or limp stems and most of their vegetative mass is below the water surface, although small portions may stick above the water. American PondweedAsian MarshweedBaby PondweedBrittle Naiad, Marine NaiadBrittle WaternymphBushy Pondweed, Southern NaiadCabomba, FanwortCoontailCurly-leaf PondweedCutleaf WatermilfoilEast Indian Hygrophila, HygroEelgrassEgeriaElodeaEurasian WatermilfoilFineleaf PondweedFloating PondweedGulf SwampweedHorned PondweedHydrillaIllinois PondweedIndian SwampweedLarge-leaf PondweedLeafy PondweedParrot's-featherRibbonleaf PondweedRichardson's PondweedSago PondweedSpotted PondweedStarhornVariable-leaf PondweedVariable-leaf WatermilfoilWaterthread PondweedWater WisteriaWidgeon GrassWillow-leafed Hygrophila