Graduate-level text by David Garson of North Carolina State University. Especially well suited for social sciences.

Large selection of pictures of organisms, mostly British in origin. Images are an aid to identification, showing different stages, states and views of the organisms. Search the database or follow a taxonomic tree.

Checklists, articles, and links for the world of life.

Provides comprehensive information about the aquatic habitats, animals, and plants of this country.

Searchable database of four kingdoms: plant, animal, fungi, monera. Search by scientific or common names, English or French.

Information on the plants, animals, and fossils of Ireland. Includes an encyclopedia of marine life of the UK. From the Ulster Museum Sciences Division.

Taxonomic tree of mammals, insects, birds, and plants. Includes common and scientific names, publication details, references, links, general range maps, and some images. Most complete for Lepidoptera.

Fact sheets and photos for mammals, birds, trees and other plants of boreal regions.

Features a new plant every week, with photo, description, and cultural information. Previously featured plants can be selected by botanical or common name. Focus is on plants for greenhouse culture.

Features searchable database of thousands of plants, with basic information and often photos. Includes many succulents, herbs, and tropical fruit trees.

Features hundreds of plant portraits, each illustrated with several photos, documenting the garden uses and cultural requirements of each species or cultivar.

Features a searchable, multilingual garden plant encyclopedia, with a summary of cultural and botanical information and in many cases photos.

Extensive directory of plants, categorized by genus, includes summary cultural information and small photograph for each plant.

Chicago Botanic Garden provides a database of recommended plants for Illinois gardens, from perennials to trees, with photos and information on their culture and use.

Mark shares photos and descriptions with personal experiences growing a large number of shade plants, both perennials and woody specimens.

Translation program for botanical latin.

Wally Orchard, certifiable Disamaniac, presents information about Disa orchids and culture, propagation, pictures, and personal accounts, and sells flasks of baby plants to interested hobbyists.

Includes advice, orchid show listings, pictures, pest information.

Features weekly articles, book reviews and links.

Offers photos and cultural tips for orchids, listing of Brazilian orchid organizations, and directory of native orchids by state.