Dual Screen Pictures  3,160 types of leaves with names stock photos, vectors, and illustrations are available royalty-free. When identifying leaves, the first thing to look at is the arrangement of the leaves along the stem. including furniture and flooring. We add new tree pictures as they come in to us, on a weekly & monthly basis. Enjoy these Tree Pictures. United States land is covered by over 30 per cent with trees and forests. Tree Pictures in Spanish dominate smaller sites.