» About.com: Botany
   A page of links and articles.
   http://botany.about.com/

» Botanical Authors Database
   Search the database of authors who contributed to the contents of the catalog of type specimens in the Harvard University Herbaria.
   http://www.huh.harvard.edu/databases/cms/botanist_index.html

» Botanical Publications Database
   Database of publications used to verify the entry of publication names in the Harvard Herbaria catalog.
   http://www.huh.harvard.edu/databases/cms/publication_index.html

» Botanical Society of America Image Collection
   Collection of 14 sets of educational images for instructional use, with search capability.
   http://images.botany.org/

» Botany Encyclopedia
   Includes a botanical dictionary, advice for gardeners, and a store selling plants.
   http://www.botany.com/

» Botresearch USA
   a botanical research and biotechnology organization specializing in tissue culture, photomicroscopy, and the production of educational materials for universities.
   http://www.botresearch.com/

» Center for Plant Conservation
   Collaborative organization dedicated to conserving and restoring the rare native plants of the United States. Includes information on conservation techniques.
   http://www.centerforplantconservation.org/

» Cladistics or Supercilious?
   Textual review of the development of evolutionary trees in botany. Written by Henry Loconte.
   http://members.aol.com/__121b_8Az5OGEtpOHzNwRgQIsq+Ik2+3ABJGENQfrswci539U=

» Glossary of Botanical Terms
   Contains more than 2,500 terms relating to botany, gardening, horticulture and landscape architecture. Fully searchable and it is regularly updated.
   http://www.gardenweb.com/glossary/

» Green Plant Phylogeny
   Green plant phylogeny research coordination group.
   http://ucjeps.berkeley.edu/bryolab/greenplantpage.html

» Hunt Institute for Botanical Documentation
   A division of Carnegie Mellon University. Archives, research, art, and information about the institute are included.
   http://huntbot.andrew.cmu.edu

» Institute for Plant Ecology
   Information about research and teaching activities with focus on biodiversity and ecophysiology in different climatic regions, based at the University Münster.
   http://www.uni-muenster.de/Biologie/pflanzenoekologie

» International Centre for Research and Training on Seabuckthorn
   Information on the biology of this plant and its uses for environmental, economic, nutritional, and medical purposes; emphasizing erosion control.
   http://www.icrts.org

» International Plant Genetic Resources Institute
   Contains information on IPGRI, resources, and press releases.
   http://www.cgiar.org/ipgri/

» Max Planck Institute for Plant Breeding Research
   Conducts research programs on molecular-biological, genetical, biochemical, physiological and cytological aspects of plant development and plant breeding. [English and German versions available.]
   http://www.mpiz-koeln.mpg.de/

» Plant Tissue Culture Information Exchange
   Intended to give researchers, teachers and producers rapid access to information about plant tissue culture.
   http://aggie-horticulture.tamu.edu/tisscult/tcintro.html

» Root Biology and Mycorrhiza Research Group
   Descriptions of current research projects at the Department of Botany, University of Guelph, Ontario, Canada.
   http://www.uoguelph.ca/botany/people/faculty/peterson/research.html