Pennsylvania State University. Pennsylvania Sea Grant.

See also: Aquatic Invasive Species Fact Sheets for additional species information

University of Minnesota. Minnesota Aquatic Invasive Species Research Center.

Texas A&M University. AgriLife Extension Service. Department of Wildlife and Fisheries Sciences.

Pennsylvania State University. Cooperative Extension.

Wisconsin Department of Natural Resources.

Lake George Association (New York).

University of Georgia. Center for Invasive Species and Ecosystem Health.

Alberta Invasive Species Council (Canada).

See also: Fact Sheets for more information about individual invasive species, including those listed as "Prohibited Noxious" and "Noxious" under the Alberta Weed Control Act

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.

Google.

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

Ohio Invasive Plants Council.

See also: Invasive Plants of Ohio for worst invasive plant species identified in Ohio's natural areas

CAB International.

University of Wisconsin Sea Grant.

University of Georgia. Center for Invasive Species and Ecosystem Health.

Smithsonian Institution. Smithsonian Environmental Research Center. Marine Invasions Research Lab.

DOI. USGS. Wetland and Aquatic Research Center.

Provides distribution maps and collection information (State and County).

DOI. USGS. Wetland and Aquatic Research Center.

Provides detailed collection information as well as animated map.