Invasive Species Slide Library
Great Lakes Indian Fish and Wildlife Commission.
Field Guide to Noxious and Other Selected Weeds of British Columbia
British Columbia Ministry of Agriculture, Food, and Fisheries (Canada).
Hawaii's Most Invasive Horticultural Plants
Hawaii Department of Land and Natural Resources. Forestry and Wildlife. State Alien Species Coordinator.
This is a list of the worst invasive horticultural plants in Hawaii.
Hoary Cress Consortium - Invasion Images
USDA. ARS. Northern Plains Agricultural Research Laboratory.
Identification: Weed Photo Gallery
University of California - Davis. Statewide Integrated Pest Management Program.
Invasive Plant Atlas of New England (IPANE)
University of Connecticut. Ecology and Evolutionary Biology.
The Invasive Plant Atlas of New England's (IPANE) mission is to create a comprehensive web-accessible database of invasive and potentially invasive plants in New England.
Invasive Plants of Northeastern Wisconsin
University of Wisconsin - Green Bay. Cofrin Center for Biodiversity.
A list of the most serious invasive species in northeastern Wisconsin.
Invasive Plants of Wisconsin Photo Gallery: Non-Native Species
Wisconsin Department of Natural Resources.
Invasive Plant Species of New England - Photo Gallery
New England Wild Flower Society.
New Jersey Weed Gallery
Rutgers Cooperative Extension.
A collection of photos and descriptions of agricultural weeds found in New Jersey.
Ohio Perennial and Biennial Weed Guide
Ohio State University. Extension.
Alberta Invasive Plants Council (Canada).
Contains common invasive plant species found in Alberta and Western Canada.
Weed Science Society of America.
Saltcedar Biological Control Consortium Grant.
Plant Image Gallery
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.
Plants of Hawaii
Includes native and non-native plants known from Hawaii.
PLANTS Image Gallery and Search results for Introduced Plants (North America)
USDA. Natural Resources Conservation Service.
Biology, and Identification (click Image Galleries tab)
Montana State University. Center for Invasive
Washington's Noxious Weeds
Washington State Noxious Weed Control Board.
Utah State University. Extension.
This photo library contains pictures of plants that are common across the North American West.