Which characteristic is NOT true for Elodea (Elodea canadensis)?

Elodea (Elodea canadensis) is generally considered common in aquatic environments across North America rather than rare. It thrives in a variety of habitats and is known to be one of the more abundant submersed aquatic plants found in freshwater systems. The species is often utilized in aquatic ecosystems for its ability to provide habitat and oxygenation.

On the other hand, Elodea is indeed native to North America, which verifies the truth of that characteristic. The plant can grow quite long, with stems reaching lengths of 7-9 feet in favorable conditions, and its leaves are typically arranged in whorls of three. Therefore, the assertion regarding its rarity is the only characteristic that does not apply to Elodea.