Council or Task Force
Alberta Invasive Species Council (Canada); Flickr.
Contains common invasive plant species found in Alberta and Western Canada.
Hoary Cress Consortium - Invasion Images
University of Idaho.
Global Invasive Species Team - Image Archive
University of Georgia. Center for Invasive Species and Ecosystem Health.
CIPWG Photo Notebook
Connecticut Invasive Plant Working Group.
PLANTS Database - Image Gallery
USDA. NRCS. National Plant
See also: Gallery Images for All Scientific Names - Introduced Plants (North America) search results
Washington's Noxious Weeds
Washington State Noxious Weed Control Board.
Invasive Plants of Wisconsin Photo Gallery: Non-Native Species
Wisconsin Department of Natural Resources.
Identification: Weed Photo Gallery
University of California. Statewide Integrated Pest Management Program.
New Jersey Weed Gallery
Rutgers Cooperative Extension.
A collection of photos and descriptions of agricultural weeds found in New Jersey.
Ohio Perennial & Biennial Weed Guide
Ohio State University. Ohio Agricultural Research and Development Center.
Includes a photo key of perennial and biennial weeds, intended to help the casual user identify a weed. Weeds that look similar are grouped together.
Invasive Plant Species of New England - Photo Gallery
New England Wild Flower Society.
Plant Image Gallery
Samuel Roberts Noble Foundation.
The Plant Image Gallery is an ongoing project which currently includes over 600 species of vascular plants. There are nearly 5000 species of vascular plants known to Texas and nearly 3000 species of vascular plants known to Oklahoma.
Invasive Species Slide Library
Great Lakes Indian Fish and Wildlife Commission.
Plants of Hawaii
Includes native and non-native plants known from Hawaii.
Weed Science Society of America.