Showing Wildflowers: Northeastern North-central North America (Peterson Field Guides) by Roger Tory Peterson
No recommendations yet View on Amazon (paid link)
Grouped by color and by plant characteristics, 1,293 species in 84 families are described and illustrated. Included here are all the flowers you're most likely to encounter in the eastern and north-central U.S., westward to the Dakotas and southward to No