Links to native plant & related organizations
CALIFORNIA
Other CNPS chapters in California
California Academy of Sciences Botany Department and their Wildflowers page
California Chaparral Institute
California Invasive Plant Council (Cal-IPC)
California Native Grasslands Association
San Gabriel Mountains Heritage Association
Sierra Club, Angeles Chapter, Natural Science Section
Southern California Wetlands Mapping Project
NORTH AMERICA
Canada (and other parts of North America): North American Native Plant Society
OVERSEAS
Australia: Association of Societies for Growing Australian Plants (ASGAP), Wildflower Society of Western Australia (with links to societies in other states)
New Zealand: Botanical Society of Otago (with links to several other New Zealand societies)
South Africa: Botanical Society of South Africa, Kirstenbosh National Botanic Garden
United Kingdom : Botanical Society of the British Isles, The Wildflower Society, Botanical Society of Scotland
Zimbabwe: Tree Society of Zimbabwe