George A. Petrides, Janet Wehr
428 Pages
Paperback

Peterson Guides are America's Best-selling Field Guides

The Peterson Field Guide to Western Trees is a newly designed field guide featuring detailed descriptions of 387 species, arranged in six major groups by visual similarity.  The 47 color plates and 5 text drawings show distinctive details needed for identification.  Color photographs and 295 color range maps accompany the species description.

Sponsored by the National Audubon Society, the National Wildlife Federation, and the Roger Tory Peterson Institute.

The Peterson Identification System
Roger Tory Peterson's unique system shows exactly what features to look for to tell one species from another.

Ease Of Use
Peterson Field Guides are designed to work in the field, and every illustration, every word, is directed to that end.

The Authors and Illustrations
For each Field Guide, an author with expertise in the subject and an experienced artist work closely with the editors to ensure that both text and illustrations are accurate.