National Audubon Society Field Guide to North American Wildflowers--WBy: National Audubon Society Series: National Audubon Society Field Guides This fully revised edition brings a new level of beauty, accuracy, and usefulness to the field guide that wildflower enthusiasts have relied upon for more than 20 years. More than 940 all new, full color images show the wildflowers of western North America close up and in their natural habitats. The guide has been completely revised to make identification in the field easier