Genus
Elodea (Waterweeds)
Elodea canadensis. Photo: (c) Kim Cabrera, some rights reserved (CC BY-NC-ND)
Elodea is a genus of 6 species of aquatic plants often called the waterweeds described as a genus in 1803. Elodea is native to North and South America and is also widely used as aquarium vegetation. It lives in fresh water.