Links to other Missouri botanical sites:

Exotics in Missouri Prairie Foundation Lands
Missouri Native Plant Society
Missouri Botanical Garden
Missouri Vegetation Management Manual

Links to other exotic invasive plant / weed web sites:

USDA Plant 3.0
California Exotic Pest Plant Council List
Conneticut Invasive Plant Working Group
Florida Exotic Pest Plant Council's 1999 List of Florida's Most Invasive Species
INVADERS Database System, Montana
The Nature Conservancy, Weeds on the Web
The Pacific Northwest Exotic Pest Plant Council
South East Exotic Pest Plant Council
Invasive Alien Plant Species in Virginia
King County Noxious Weeds, Washington
Invasive Plant Species in Illinois

Read the AMERICAN SEED TRADE ASSOCIATION's Position Statement on INVASIVE SPECIES.