Society presents its long history, meetings and field trips, herbarium, journal, and officers, with a membership form.

Organization for professional and amateur botanists interested in the flora of the Southern Appalachian Mountains. Includes tables of contents for the journal Castanea.

Founded in 1836, it is the major source of information on the status and distribution of British and Irish flowering plants and ferns.

Carries out projects of interest to systematists, especially those that require international cooperation.

An organization devoted to the scientific study of all aspects of the biology of bryophytes and lichen-forming fungi.

To promote the growth and development of plant biology, to encourage and publish research in plant biology, and to promote the interests and growth of plant scientists in general

Systematics, ecology, evolution, and natural history of the plants of California and adjacent western North America. Publisher of the journal Madroño.

Promoting research and teaching in all fields of plant biology to facilitate cooperation among plant scientists worldwide and to disseminate knowledge of plants, algae and fungi. Links to the American Journal of Botany, Plant Science Bulletin, national meetings and symposia, and educational resources.

homepage for Australian systematic botany society, news, conferences and publications.