Brazilian Elodea
Brazilian elodea, or egeria, is an exotic (native to South America), submersed, perennial, aquatic herb, usually rooted in bottom mud. Probably introduced through the aquarium trade, the plant is normally found in quiet waters of ponds, lakes, and in slow-moving streams. It is commonly found in the same waters as Canadian elodea (Elodea canadensis), African elodea (Lagarosiphon spp.), and hydrilla (Hydrilla verticillata). Populations of this species have probably been established throughout the world, and have been found in dense growths in Maryland.