Includes bibliographical references (pages 236-240) and index.

I. Conifers. Western White Pine -- Sugar Pine -- Whitebark Pine -- Limber Pine -- Ponderosa Pine (and Jeffrey Pine) -- Knobcone Pine -- Lodgepole Pine and Shore Pine -- Western Larch -- Alpine Larch -- Sitka Spruce -- Engelmann Spruce (and Brewer Spruce) -- White Spruce and its hybrids -- Douglas-fir -- Western Hemlock -- Mountain Hemlock -- Pacific Silver Fir -- Grand Fir and White Fir -- Subalpine Fir -- Noble Fir and Shasta Red Fir -- Incense-cedar -- Western Redcedar -- Yellow-cedar -- Port Orford-cedar -- Junipers (and Modoc Cypress) -- Pacific Yew (and Redwood) ; II. Broad-leaved Trees. Willows -- Black Cottonwood and its relatives -- Quaking Aspen -- Alders -- Paper Birch and Water Birch -- Golden Chinkapin -- Tanoak -- Oregon White Oak or Garry Oak -- California Black Oak -- Canyon Live Oak -- Native fruit trees -- Bigleaf Maple -- Smaller Maples -- Cascara -- Pacific Dogwood -- Pacific Madrone -- California-laurel -- Oregon Ash -- Naturalized trees.