MBG: W3TROPICOS
- Database of plant names, information on them, and the sources of information.
- http://mobot.mobot.org/W3T/Search/vast.html

World-Wide Web Virtual Library: Botany
- Collection of scholarly and research links for plant biology.
- http://www.ou.edu/cas/botany-micro/www-vl/

Schoolhouse: Science: Botany Resources
- A list of links related to various aspects of botany.
- http://teacherpathfinder.org/School/Subjects/Science/botany.html

Plants For a Future
- 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.
- http://www.comp.leeds.ac.uk/pfaf/index.html

CalFlora Database
- provides access to information about all 8375 currently recognized plants in California, including more than 670,000 plant observations and 20,000 photographs.
- http://www.calflora.org/

USDA PLANTS Database
- 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.
- http://plants.usda.gov/

Internet Directory for Botany: Algae, Bryophytes, Fungi
- links to many interesting sites in lower plants, e.g. algae, bryophytes and fungi.
- http://www.helsinki.fi/kmus/botcryp.html

Internet Directory for Botany
- an index to botanical information available on the Internet. It consists of two parts, an alphabetical directory and a categorical directory.
- http://www.botany.net/IDB/

Dr. Scott Russell's Botanical Links
- Variety of informative, up-to-date, plant-related links from the Univ. of Oklahoma.
- http://www.ou.edu/cas/botany-micro/bot-linx/