an index to botanical information available on the Internet. It consists of two parts, an alphabetical directory and a categorical directory. www.botany.net/IDB
Manages a series of cooperative international projects that aim to create plant taxonomic information databases; also includes useful general botanical links - commissioned by the International Union of Biological Sciences. iopi.csu.edu.au/iopi
Plant names, photos, fact sheets, and information on culturally significant plants, noxious and invasive plants, and threatened and endangered plants, with links to thousands of plant-related sites and software tools. plants.usda.gov
provides access to information about all 8375 currently recognized plants in California, including more than 670,000 plant observations and 20,000 photographs. www.calflora.org
A resource centre for rare and unusual plants, particularly those which have edible, medicinal or other uses. The site contains an online database of over 7000 plants. www.comp.leeds.ac.uk/pfaf/index.html
A museum collection of dried, labeled plants of state, national and international importance, which is used extensively for taxonomic and ecological research, as well as for teaching and public service. It contains the world's largest collection of Wiscon www.botany.wisc.edu/herbarium
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