Accordingly, an experiment was set up to discover the effect of halogenated benzoic acids on Elodea densa.

Why is it invasive? Brazilian elodea forms dense mats that prevent people and animals from moving through the water. It suppresses the growth of native species and clogs pipes.

Brazilian elodea has dense whorls of 4-6 leaves growing from submersed stems. Under magnification fine serrations are visible on the blade-shaped leaves. Unique double whorls, known as double nodes, ...