Hydrilla verticillata
Hydrilla

Non-Native in Florida

Hydrilla is a submersed plant. It can grow to the surface and form dense mats. It may be found in all types of water bodies.

Hydrilla stems are slender, branched and up to 25 feet long. Hydrilla's small leaves are strap-like and pointed. They grow in whorls of four to eight around the stem. The leaf margins are distinctly saw-toothed. Hydrilla often has one or more sharp teeth along the length of the leaf mid-rib. Hydrilla produces tiny white flowers on long stalks. It also produces 1/4 inch turions at the leaf axils and potato-like tubers attached to the roots in the mud.

Visit the Osceola County Hydrilla & Hygrophila Demonstration Project web site for current research and information.

Much more hydrilla information and pictures are here

Here is the booklet: Hydrilla verticillata: The Perfect Aquatic Weed


Here is the Acrobat .PDF file of the hydrilla chapter from the book, Identification & Biology of Non-Native Plants in Florida's Natural Areas


Here is the PDF file of Hydrilla Management in Florida: A Summary and Discussion of Issues Identified by Professionals with Future Management Recommendations
Final Document: 2005

Click here to see the herbarium specimen image of the UNIVERSITY OF FLORIDA HERBARIUM DIGITAL IMAGING PROJECTS.

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