Hydrilla (Hydrilla verticillata) - Photos

Photo of Hydrilla by Elizabeth Czarapata
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This is Eurasian watermilfoil, another widespread aquatic invasive.
Hydrilla similarly clings to boat trailers. Photo by David Eagan, WDNR
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Photo of Hydrilla caught on a boat motor by Alison Fox, U. of Florida
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Photo of Hydrilla infestation by Leslie Mehrhoff, IPANE
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Photo of tuber at tip of roots by Leslie Mehrhoff, IPANE
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Photo of Hydrilla by Kerry Dressler
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Photo of Hydrilla turions by David Sutton
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Serrated leaf margin, barbs along the midrib, and leaf whorls; Illustration courtesy of U. of Florida
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Hydrilla Look-alikes

Photo of Brazilian waterweed (Egeria densa) by Leslie Mehrhoff, IPANE
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Diagram of Hydrilla and its look-alikes Elodea, Egeria and Lagarosiphon

Photo of Common waterweed (Elodea canadensis; native) by Kathy Hamel
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Photo of slender waterweed (Elodea nuttallii; native) by Kathy Hamel
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