A Peterson guide to 590 species of wildflowers, with both line drawings and a section of color photographs. Each species is thoroughly described with information on range and habitat, as well as "interesting facts." A classic first published in 1963, this book is a good choice for travelers from Northern Arizona and New Mexico to British Columbia. With a focus on family and genus, the book includes the most conspicuous and commonly encountered flowers.  (USW41, $21.00)