Tree Identification

Palm Tree Photo Gallery - Over a thousand photographs of palms from around the world.
http://www.junglemusic.net/palmgallery.htm

Introduction to Tree Identification - A resource for beginners and others. Includes a collection of descriptive graphics showing leaves, and buds, with notes.
http://gaia.flemingc.on.ca/~dhendry/trelec.htm

Bartosz Pacula's Pictures of Trees - Large photo gallery of cultivated and wild trees in Europe.
http://www.geocities.com/b_pacula/

Foliage Identification Test - An interactive guide to identifying trees and shrubs of Ontario. Image intensive.
http://gaia.flemingc.on.ca/~dhendry/nrlfid.htm

Trees Identification - Provides help with tree identification.
http://trees.luidp.net/en/

What Tree is it? - Tree identification. Especially useful way to work from the shapes of leaves.
http://www.oplin.org/tree/index.html

Plant Kaleidoscope - Large image gallery of cultivated woody plants in Europe.
http://www.biologie.uni-ulm.de/systax/dendrologie/

Fact Sheets for 680 Trees - Descriptions, illustrations, US range maps, and cultivation of cultivated species from around the world.
http://hort.ifas.ufl.edu/trees/

Dendrology at Virginia Tech - Includes ID keys and fact sheets on over 450 species of wild and cultivated trees in the eastern USA.
http://www.cnr.vt.edu/dendro/dendrology/main.htm

Twig Identification Test - Interactive identification of leafless twigs and axillary buds. For the trees and shrubs of Ontario.
http://gaia.flemingc.on.ca/~dhendry/nrtwitst.htm

Basics of Tree ID - A basic guide to identifying trees. Describes leaves, fruits, barks, with many images.
http://www.fw.vt.edu/dendro/forsite/Idtree.htm

Taxonomy of Woody Plants - Links on woody plant taxonomy including original identification keys to major genera.
http://members.tripod.com/~Hatch_L/tlan.html

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.
http://www.tree-identification.com

About.com - A Tree Leaf Key - A quick leaf guide for identification of over 50 common North American trees.
http://forestry.about.com/library/treekey/bltree_key_id_start.htm

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.
http://www.brassett.org.uk/trees/