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.

Collaborative organization dedicated to conserving and restoring the rare native plants of the United States. Includes information on collections of rare and endangered plants.

Information about efforts to restore Ulmus americana to the landscape by developing and planting new disease resistant varieties. Includes photos and links.

Major timber cover type maps for the United States.

A key to wildflowers of Northeastern and Central United States and adjacent Canada.

Informational photo gallery of native wildflowers found in the Pacific Northwest.

Reny Parker provides a gallery of photographs of native plants taken in several US states. Search for photos by botanical or common name, family, color or location.