This home page for the Dendrology program at Virginia Tech is a great resource for those interested in woody plants. In addition to the set of fact sheets on over 450 tree species and fall color photos for many species, the site hosts two useful identification keys. The Leaf Key and Twig Key allow users to identify a tree by viewing online photos and statements, and clicking on the choice that most resembles the tree to be identified. When the suspected genus or species is identified, more photos and descriptions are provided to help ensure that the identification is correct.