Ariadne's Trees and Forests - Glossary of tree-related terms; articles on California trees, hiking, and meditation.
British Trees - Guide to the native trees of Britain, plus links to other web resources on forestry and conservation of British Native trees, including forest conservation organizations.
Common Trees of Pennsylvania - Guide to common trees with laymans descriptions of each tree, and a simple key to start with. Line drawings of leaves and fruit.
Identify America’s Common Trees - Provides quick identification of 100 common conifer and evergreen trees of the North American forest using a tree finder key, photographs and other features.
Tree Atlas of the Panama Canal Watershed - Species accounts with images and maps, arranged by scientific name, tanomomy, and common name. In English and Spanish.
Trees and Shrubs of Ontario - Designed to assist those interested in learning some of the common trees and shrubs found in the province.
Trees of Alabama and the Southeast - Brief text and numerous photos of both native and planted trees. Includes section illustrating terminology with photographs.
Trees of Ilalo - Photographic guide to the trees of Ilalo, a mountain in the inter-Andean Valley near Quito, Ecuador.
Trees of London - Tree identification using examples of trees located in London. Illustrated with photographs of trees, bark, flowers, fruit and leaves.
Trees of Ottawa - A photographic index of tree species that grow in Ottawa, Ontario, Canada.
