CONTENTS 



Introduction 1 



Regions _ 2 



Pacific Slope Region 2 



Olympic National Park 3 



Mount Rainier National Park 4 



Crater Lake National Park 5 



Lassen Volcanic National Park 6 



Yosemite National Park 7 



Kings Canyon National Park 8 



Sequoia National Park 8 



Rocky Mountain Region 9 



Glacier National Park 9 



Yellowstone National Park 10 



Grand Teton National Park 1 1 



Rocky Mountain National Park 12 



Southwest Region 13 



Mesa Verde National Park 13 



Bryce Canyon National Park 14 



Zion National Park 15 



Grand Canyon National Park 15 



Great Lakes Region 17 



Isle Royale National Park 17 



Field guide to the trees 18 



Field guide to the shrubs 24 



Yew family (Taxaceae) 29 



Cypress family (Cupressaceae) — 30 



Ephedra family (Gnetaceae) 32 



Lily family (Liliaceae) 34 



Amaryllis family (Amaryllidaceae) 37 



Willow family (Salicaceae) 37 



Birch family (Betulaceae) 55 



Oak family (Fagaceae) 6! 



Sweet-gale family (Myricaceae) 66 



Elm family (Ulmaceae) 67 



Buckwheat family (Polygonaceae) 68 



Barberry family (Berberidaceae) 70 



Pigweed family (Chenopodiaceae) 75 



Buttercup family (Ranunculaceae) 77 



62812 



