PLANT SCIENCE AND LAW RESOURCES
Botany and Conservation Science
All Species Project: Inventorying life on Earth
American Bryological and Lichenological Society
American Society of Plant Taxonomists
Audubon Society Bird Species Watchlist
Audubon Society Important Bird Areas
CalFlora: Online occurrence database for native and exotic flora in California
CalPhotos: Photos of California flora
Center for Plant Conservation: Association of botanical gardens and arboreta of the United States
Botanical Society of America
New York Botanical Garden: Botanical databases, including literature
Ecological Society of America
Flora of North America
Harvard University Databases: Gray Herbarium Index and Harvard Type Specimen Index
Inventory of Rare and Endangered Plant Species of California: California Native Plant Society
Jepson Herbarium, University of California, Berkeley
Nature Conservancy
NatureServe: Information on imperiled species of the United States
Oregon Flora Project
Oregon State University Herbarium
Oregon Natural Heritage Information Center
Plant Conservation Alliance
Smithsonian - Centres of Plant Diversity in the Americas
Society for Conservation Biology
Tree Ring Society
World Conservation Union: Imperiled species science and policy
Invasive Species
Global Invasive Species Programme (GISP)
President Clinton's Executive Order on Invasive Species
California Exotic Pest Plant Council
Florida Exotic Pest Plant Council
Georgia Exotic Pest Plant Council
Southeast Exotic Pest Plant Council
Michigan Invasive Plant Council
Weeds Gone Wild: Information on weeds of the United States
Plant Conservation Alliance Alien Plant Working Group
Invasive Plant Association of Wisconsin
California Native Plant Society Exotic Species Policies
• Policy on Intentional Introduction of Non-Native Species
• Policy on Invasive Exotic Plants
U.S. Government Invasive Species Programs Home Page
Nature Conservancy Invasive Species Links Page
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