sentences:  "Egeria densa" is an aquatic plant growing in water up to deep, with trailing stems to or more long, producing roots at intervals along the stem.The leaves are produced in whorls of four to eight, long and broad, with a pointed leaf tip.The stem system of the plant will grow until it reaches the surface of the water, where it will begin to spread out, creating a thick flower canopy that blocks light from reaching plants below it.