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Hydrilla (waterthyme) is a genus of aquatic plant, usually treated as containing just one species, Hydrilla verticillata, though some botanists divide it into several species. It is native to the cool and warm waters of the Old World in Asia, Africa and Australia, with a sparse, scattered distribution; in Australia from Northern Territory ...
The use of these names causes it to be confused with similar-looking plants, like Brazilian elodea (Egeria densa) or hydrilla (Hydrilla verticillata). American water weed is an attractive aquarium plant and is a good substitute for Brazilian elodea.
The efficacy of herbicides is dependent upon a variety of factors, but their application is credited with, if not eliminating hydrilla in the Kissimmee Chain of Lakes, at least keeping it to a manageable and acceptable presence. Sometimes hydrilla is treated by the release of grass carp (Ctenopharyngodon idella) that eat it. Carp, however, may ...
The flower of Nymphaea alba, a species of water lily Bud of Nelumbo nucifera, an aquatic plant.. Aquatic plants also referred to as hydrophytes [1] are vascular plants and non-vascular plants [2] that have adapted to live in aquatic environments (saltwater or freshwater).
Elodea densa flower. Elodea densa is an aquatic plant growing in water up to 4 m (13 ft) deep, with trailing stems to 2 m (6.6 ft) or more long, producing roots at intervals along the stem.
It is usually fairly easy to distinguish from its relatives, like the Brazilian Egeria densa and Hydrilla verticillata. These all have leaves in whorls around the stem; however, Elodea usually has three leaves per whorl, whereas Egeria and Hydrilla usually have four or more. Egeria densa is also a larger, bushier plant, with longer leaves. [15]
As the hydrilla is eliminated, native plants can move in to repopulate the area. This fly is native to India and Pakistan, and it is currently established in hydrilla-prone areas in the southeastern United States where it was successfully introduced. It does best in warm areas and tends to be much less effective in areas that get cold. [2]
Myriophyllum spicatum (Eurasian watermilfoil [3] or spiked water-milfoil) is a submerged aquatic plant which grows in still or slow-moving water. It is native to Europe, Asia, and North Africa, but has a wide geographic and climatic distribution among some 57 countries, extending from northern Canada to South Africa. [4]