Poisonous Plants
- A database compiled by Dr. Dan Brown of Cornell University.
- http://www.ansci.cornell.edu/plants/

Native American Ethnobotany Database
- Plant-derived dyes, drugs, food, and fibers of native North American peoples.
- http://herb.umd.umich.edu/

Incredible Edibles
- A list of edible and medicinal plants found in California.
- http://www.laspilitas.com/classes/edible.htm

Internet Directory for Botany: Images
- Many links to plant photographs.
- http://www.helsinki.fi/kmus/botpics.html

Dr. Duke's Phytochemical and Ethnobotanical Database
- A phytochemical and ethnobotanical database compiled by Dr. Jim Duke of the Agricultural Research Service/USDA.
- http://www.ars-grin.gov/duke

Herb Net
- Collection of resources for herbalists, including a calendar of events.
- http://www.herbnet.com