The most comprehensive field guide available to the trees of North America's western region--a must-have for any enthusiast's day pack or home library--from the go-to reference source for over 18 million nature lovers. Nearly 700 species of trees are detailed in beautiful, full-color photographs of leaf shape, bark, flowers, fruit, and fall leaves, and accompanied by informative text. Both compact and comprehensive, and featuring a durable vinyl binding, this is the ideal field companion for beginner and advanced tree-peepers alike.  Note: the Eastern Edition generally covers states east of the Rocky Mountains, while the Western Edition covers the Rocky Mountain range and all the states to the west of it.