"The extraordinary photos are beautiful and help to identify the nearly 400 common wildflowers in Washington, Oregon, Idaho, British Columbia, W Montana, Wyoming and Alberta."
This guidebook has helped me identify plants from the Oregon Coast to
Montana. There is a precise description of each flower's habit, range, and key characteristics. The 10 pages of "Visual Guide to Families and Genera" has been
especially helpful for identification. It's a great addition to your personal reference library.
Wayside Wildflowers of the PNW
Dee Strickler, Flower Press, 1993, 272 pages.