The most comprehensive and user-friendly field guide to the trees of western North AmericaCovering 630 species, more than any comparable field guide, Trees of Western North America is the most comprehensive, best illustrated, and easiest-to-use book of its kind. Presenting all the native and naturalized trees of the western United States and Canada as far east as the Great Plains, the book features superior descriptions; thousands of meticulous color paintings by David More that illustrate important visual details; range maps that provide a thumbnail view of distribution for each native species; "Quick ID" summaries; a user-friendly layout; scientific and common names; the latest taxonomy; information on the most recently naturalized species; a key to leaves; and an introduction to tree identification, forest ecology, and plant classification and structure. The easy-to-read descriptions present details of size, shape, growth habit, bark, leaves, flowers, fruit, flowering and fruiting times, habitat, and range. Using a broad definition of a tree, the book covers many small, overlooked species normally thought of as shrubs, as well as treelike forms of cacti and yuccas. With its unmatched combination of breadth and depth, this is an essential guide for every tree lover.

Introduction 6
About This Book 6
Taxonomy and Names 7
Gymnosperms and Angiosperms 7
Tree Biology 9
Forest Structure 18
Leaf Keys 19
Key to the Gymnosperms by Leaf Type 20
Key to Selected Angiosperm Trees by Leaf Shape 21

THE TREES
Gymnosperms 26
Conifers 26
Ginkgoaceae: Ginkgo Family 27
Araucariaceae: Araucaria Family 28
Cupressaceae: Cypress Family 30
Pinaceae: Pine Family 55
Taxaceae: Yew Family 110
Angiosperms 112
Monocots 112
Arecaceae: Palm Family 112
Asparagaceae: Asparagus Family 118
Dicots 130
Adoxaceae: Moschatel Family 130
Anacardiaceae: Cashew Family 134
Apocynaceae: Oleander Family 148
Aquifoliaceae: Holly Family 149
Araliaceae: Ginseng Family 152
Asteraceae: Aster Family 152
Betulaceae: Birch Family 156
Bignoniaceae: Bignonia Family 172
Boraginaceae: Borage Family 176
Buddlejaceae: Buddleja Family 178
Burseraceae: Torchwood Family 178
Cactaceae: Cactus Family 180
Cannabaceae: Hemp Family 199
Celastraceae: Bittersweet Family 204
Cornaceae: Dogwood Family 206
Ebenaceae: Ebony Family 210
Elaeagnaceae: Oleaster Family 212
Ericaceae: Heath Family 216
Euphorbiaceae: Spurge Family 226
Fabaceae: Bean or Pea Family 230
Fagaceae: Beech or Oak Family 276
Garryaceae: Silktassel Family 320
Hamamelidaceae: Witch-hazel Family 324
Juglandaceae: Walnut Family 325
Koeberliniaceae: Allthorn Family 334
Lauraceae: Laurel Family 335
Malvaceae: Mallow Family 340
Meliaceae: Mahogany Family 346
Moraceae: Mulberry Family 346
Myoporaceae: Myoporum Family 352
Myricaceae: Wax Myrtle Family 353
Myrtaceae: Myrtle Family 354
Oleaceae: Olive Family 362
Papaveraceae: Poppy Family 378
Pittosporaceae: Cheesewood Family 379
Platanaceae: Planetree Family 381
Proteaceae: Protea Family 385
Punicaceae: Pomegranate Family 386
Rhamnaceae: Buckthorn Family 386
Rosaceae: Rose Family 402
Rubiaceae: Madder Family 454
Rutaceae: Citrus or Rue Family 456
Salicaceae: Willow Family 464
Sapindaceae: Soapberry Family 500
Sapotaceae: Sapodilla Family 514
Simaroubaceae: Quassia Family 516
Solanaceae: Nightshade Family 518
Staphyleaceae: Bladdernut Family 520
Styracaceae: Storax Family 521
Tamaricaceae: Tamarisk Family 522
Ulmaceae: Elm Family 528
Verbenaceae: Vervain Family 534
Zygophyllaceae: Caltrop Family 538

Acknowledgments 540
Abbreviations 541
Glossary 542
Index of Species 547