An interactive guide to trees, using a simple visual dichotomous key.
A page on the common trees of Michigan with a key.
Searchable database of notable UK trees. Tree quotes, news, photo galleries, and forums.
Glossary of tree-related terms; articles on California trees, hiking, and meditation.
Descriptions and images of over 70 species.
Names and illustrations of Japanese trees.
A site that covers common conifers only. Uses an interactive web based dichotomous key.
Species accounts with images and maps, arranged by scientific name, tanomomy, and common name. In English and Spanish.
Photographs and information on over 160 species, identification key, and full species lists for two counties.
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