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By Alison Fox and Hydrilla Verticillata


Hydrilla verticillata is sometimes considered nature’s “perfect weed”. It grows and spreads at a very fast rate, covering the surface of water bodies it infests. In doing so, it can restrict boating, fishing, swimming, and other recreational uses. Species Description Hydrilla is a submerged, perennial aquatic plant. The stems are long and branching, forming intertwined mats at the surface of the water. The leaves have small sharp teeth on the edges and sometimes have spines on the midvein which makes the plant rough to touch. Plants are usually rooted to the lake bottom, growing upward from the substrate to the surface in water up to 12 feet (3.7 meters) deep. During the late growing season, small white tubers are formed on the plants roots. These tubers are used for food storage and allow the plant to over- winter. Hydrilla closely resembles Brazilian elodea (Egeria densa) and American water weed (Elode

Year: 2013
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