Written and illustrated by David Allen Sibley, America's most widely respected illustrator and naturalist, this FoldingGuide™ offers instant access to just what the curious beginner needs to know. 48 of the most common indigenous and cultivated tree species are covered, including descriptions, size, range, and illustrations of bark, leaves, blossoms, and fruits and berries, all taken from his award-winning The Sibley Guide to Trees. The Pacific Northwest region includes coastal Oregon, Washington, and British Columbia.