Hydrilla Hydrilla verticillata Floating plant, forms dense surface and underwater mats, impassable by motorboats Additional Resources MISC Invader of the Month press release. June 2009 Center for Aquatic and Invasive Plants, University of Florida, IFAS Hydrilla verticillata. Invasive Species Compendium, CABI Invasive.org.

USDA ARS Archives, USDA ARS, www.invasive.org