The Concise Field Guide to 188 Common Wildflowers of Northeastern and North-central North AmericaRoger Tory Peterson
From the publisher: The Peterson First Guide to Wildflowers features:
• 188 common and conspicuous wildflowers of northeastern and north-central North America
• Illustrations grouped by flower color for quick identification
• A clear, precise description of each flower.
• The famous Peterson Identification System, which shows you exactly what to look for."
Paper, 128 pages, 3 3/4 x 7 1/4, full-color illustrations, all ages, 1999