By Region Websites

Historical, ancient, and biggest trees of Great Britain and Ireland.

A site that covers common conifers only. Uses an interactive web based dichotomous key.

Find information on more than 100 trees in North America

Descriptions, images, and range maps.

Provides quick identification of 100 common conifer and evergreen trees of the North American forest using a tree finder key, photographs and other features.

A tree database for California. Includes non native trees.

Tree identification using examples of trees located in London. Illustrated with photographs of trees, bark, flowers, fruit and leaves.

Photographs and information on over 450 species, identification key, and full species list for the state.

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.