A Field Guide To The Plants of Arizona
A Field Manual of the Ferns & Fern-Allies of the United States & Canada
No primary photo.
A Utah Flora
Alpine and Subalpine Vegetation of the Wallowa, Seven Devils and Blue Mountains
Alpine Wildflowers of the Rocky Mountains
Arizona Flora
Cataclysms on the Columbia
Deepest Valley: A Guide to Owens Valley, Its Roadsides and Mountain Trails
Enter the Forest: A Guide to the Angeles National Forest
Fire Mountains of the West
Flora of Steens Mountain
Flora of the Pacific Northwest
Guide to the Plants of the Wallowa Mountains of Northeastern Oregon
Manual of Vascular Plants of Northeastern United States and Adjacent Canada
Marin Flora
Northwest Exposures. A Geologic Story of the Northwest
Plant Identification Terminology. An Illustrated Glossary.
Sierra Birds - A Hiker's Guide
Smithsonian Handbooks Birds of North America Western Region
The Illustrated Companion to Gleason and Cronquist’s Manual. Illustrations of the Vascular Plants of Northeastern United States and Adjacent Canada.