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U.S. Department of Agriculture
National Invasive Species Information Center
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Invasive Species Resources

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California's Invaders

California Department of Fish and Wildlife.
Encycloweedia: California Noxious Weeds
California Department of Food and Agriculture.
Illegal Aquatic Plants
South Carolina Department of Natural Resources. Aquatic Nuisance Species Program.
Missouri Noxious Weed List

Missouri Department of Agriculture.
Non-native and Invasive Plants in Delaware (Apr 2013) (PDF | 841 KB)
Delaware Department of Natural Resources and Environmental Control. Natural Heritage Program.
Noxious Weeds §317.1A
Iowa Code.
Potential Invaders of Non-Native, Invasive Plants in Delaware (Dec 2011) (PDF | 238 KB)
Delaware Department of Natural Resources and Environmental Control. Natural Heritage and Endangered Species Program.
Prohibited Exotic Wildlife
Kentucky Department of Fish and Wildlife Resources.