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Brazilian Waterweed Resources

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Texas A&M University. AgriLife Extension Service. Department of Wildlife and Fisheries Sciences.
Washington State Noxious Weed Control Board.
University of Georgia. Center for Invasive Species and Ecosystem Health.
Provides state, county, point and GIS data. Maps can be downloaded and shared.
California Department of Food and Agriculture.
See also: Included on California's noxious weed list; see Encycloweedia: Program Details for additional resources
Rhode Island Department of Environmental Management. Office of Water Resources.
See also: Aquatic Invasive Plants for species of concern
IUCN. Species Survival Commission. Invasive Species Specialist Group.
University of Georgia. Center for Invasive Species and Ecosystem Health.
University of Georgia. Center for Invasive Species and Ecosystem Health.
Pennsylvania Department of Conservation and Natural Resources.
See also: Invasive Plant Fact Sheets for plant species (trees, shrubs, vines, herbs and aquatic plants) that have impacted the state's natural lands

California Invasive Plant Council.

In online book: Bossard, C.C., J.M. Randall, and M.C. Hoshovsky (Editors). 2000. Invasive Plants of California's Wildlands. University of California Press. Berkeley, CA
Queensland Business and Industry Portal (Australia).
University of Wisconsin Sea Grant.
University of Georgia. Center for Invasive Species and Ecosystem Health.
King County Department of Natural Resources (Washington). Water and Land Resources Division.
University of Maine Cooperative Extension.
See also: Maine Invasive Plants & Entire Series for entire series of 22 fact sheets and invasive plants brochure (available in HTML/PDF or for purchase)
Lake Stewards of Maine.
Special Note: Formerly known as the Maine Volunteer Lake Monitoring Program.
Smithsonian Institution. Smithsonian Environmental Research Center. Marine Invasions Research Lab.
Northeast Aquatic Nuisance Species Panel.