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Elodea Elodea is a genus of aquatic plants often called water weeds. Elodea is native to North America and it is also widely used as aquarium vegetation. The introduction of some species of Elodea into waterways in parts of Europe, the Australia, Africa, Asia, and New Zealand has created a significant problem, and it is now considered a noxious weed in these areas. Elodea canadensis, sometimes called American or Canadican waterweed or Anacharis (a former scientific name) is widely known as the generic water weed. The use of these names causes it to be confused with similar-looking non-native plants like Brazilian elodea (Egeria Densa) or hydrilla (Hydrilla verticillata). American waterweed is an attractive aquarium plant, and is a good substitute for Brazilian elodea since it is native to Washington's lakes, ponds and rivers. American waterweed is usually fairly easy to distinguish from its more notorious relatives, like Brazilian elodea and hydrilla. All of...

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