Dr. Duke's Phytochemical and Ethnobotanical Database: A phytochemical and ethnobotanical database compiled by Dr. Jim Duke of the Agricultural Research Service/USDA.
Herb Net: Collection of resources for herbalists, including a calendar of events.
Incredible Edibles: A list of edible and medicinal plants found in California.
Internet Directory for Botany: Images: Many links to plant photographs.
Native American Ethnobotany Database: Plant-derived dyes, drugs, food, and fibers of native North American peoples.
Poisonous Plants: A database compiled by Dr. Dan Brown of Cornell University.