Basics of Tree ID - A basic guide to identifying trees. Describes leaves, fruits, barks, with many images.
Dendrology at Virginia Tech - Includes ID keys and fact sheets on over 450 species of wild and cultivated trees in the eastern USA.
Fact Sheets for 680 Trees - Descriptions, illustrations, US range maps, and cultivation of cultivated species from around the world.
Foliage Identification Test - An interactive guide to identifying trees and shrubs of Ontario. Image intensive.
Introduction to Tree Identification - A resource for beginners and others. Includes a collection of descriptive graphics showing leaves, and buds, with notes.
Phil's Tree Pages - Photo-rich pages introducing over 300 species of tree that can be found growing in the UK, with a special focus on the trees of Cambridge.
Plant Kaleidoscope - Large image gallery of cultivated woody plants in Europe.
Taxonomy of Woody Plants - Links on woody plant taxonomy including original identification keys to major genera.
Tree-Identification.com - Provides information about the general identification of trees as well as more specific techniques for a limited number of species. Includes information about dendrology.
