Botany: Taxonomy

A searchable database of taxonomic information based on the accessions of the U.S. National Plant Germplasm System. The collection emphasizes economic plants.

Missouri Botanical Garden's nomenclature database. Can search by common name.

A curated classification and nomenclature for all of the organisms in the public sequence databases.

Taxonomic information on plants, animals, fungi, and microbes of North America and the world.

Taxonomic information on terrestrial, marine, and freshwater algae. Currently, the information for marine algae, especially seaweeds, is the most complete. Also includes seagrasses.

The Hawaiian Algal DataBase showcases the red algal biodiversity of the Hawaiian Islands. It includes geographic references to collections sites displayed as maps, as well as photographs and DNA signature sequences ("DNA barcodes") for each specimen.

A joint project with the Royal Botanic Gardens, Kew, The Harvard University Herbaria, and the Australian National Herbaria. IPNI is an online database of the names and associated basic bibliographical details of all seed plants, ferns, and fern allies.

USDA Natural Resources Conservation Service. Plants of the U.S. and territories.

A collaborative effort of natural history museums, botanical gardens, and research institutions to create a biodiversity database on the Web. Scientific names, geographic distribution, and images are provided for many species.