| | About.com: Botany - A page of links and articles. |
| | BioScience Research Tool: Botany - Specialized directory of online tools and resources selected for Botanists, Plant Physiologists, and Plant Molecular Geneticists. |
| | Botanical Authors Database - Search the database of authors who contributed to the contents of the catalog of type specimens in the Harvard University Herbaria. |
| | Botanical Publications Database - Database of publications used to verify the entry of publication names in the Harvard Herbaria catalog. |
| | Botanical Society of America Image Collection - Collection of 14 sets of educational images for instructional use, with search capability. |
| | Botany Encyclopedia - Includes a botanical dictionary, advice for gardeners, and a store selling plants. |
| | Botresearch USA - a botanical research and biotechnology organization specializing in tissue culture, photomicroscopy, and the production of educational materials for universities. |
| | Center for Plant Conservation - Collaborative organization dedicated to conserving and restoring the rare native plants of the United States. Includes information on conservation techniques. |
| | Cladistics or Supercilious? - Textual review of the development of evolutionary trees in botany. Written by Henry Loconte. |
| | 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. |
| | Green Plant Phylogeny - Green plant phylogeny research coordination group. |
| | Hunt Institute for Botanical Documentation - A division of Carnegie Mellon University. Archives, research, art, and information about the institute are included. |
| | 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. |
| | 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. |
| | International Plant Genetic Resources Institute - Contains information on IPGRI, resources, and press releases. |
| | 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.] |
| | Plant Tissue Culture Information Exchange - Intended to give researchers, teachers and producers rapid access to information about plant tissue culture. |
| | Root Biology and Mycorrhiza Research Group - Descriptions of current research projects at the Department of Botany, University of Guelph, Ontario, Canada. |