A quick leaf guide for identification of over 50 common North American trees.

Large photo gallery of cultivated and wild trees in Europe.

A basic guide to identifying trees. Describes leaves, fruits, barks, with many images.

Includes ID keys and fact sheets on over 450 species of wild and cultivated trees in the eastern USA.

Descriptions, illustrations, US range maps, and cultivation of cultivated species from around the world.

An interactive guide to identifying trees and shrubs of Ontario. Image intensive.

A resource for beginners and others. Includes a collection of descriptive graphics showing leaves, and buds, with notes.

Over a thousand photographs of palms from around the world.

Large image gallery of cultivated woody plants in Europe.

A tree database for California. Includes non native trees.

Links on woody plant taxonomy including original identification keys to major genera.

Interactive identification of leafless twigs and axillary buds. For the trees and shrubs of Ontario.

Tree identification. Especially useful way to work from the shapes of leaves.