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INTRODUCTION	3

TREE STUDY IN THE YOSEMITE	3

THE CLASSIFICATION OF TREES	4

LIFE ZONES	7

IDENTIFICATION OF THE TREES	12

THE GYMNOSPERMS
THE CONIFERS	15
PINE FAMILY	21
SUGAR PINE	23
WESTERN WHITE PINE	27
WHITE-BARK PINE	31
PONDEROSA PINE	33
JEFFREY PINE	37
DIGGER PINE	41
LODGEPOLE PINE	43
MOUNTAIN HEMLOCK	47
DOUGLAS FIR	51
THE FIR	55
WHITE FIR	57
RED FIR	61
REDWOOD FAMILY: GIANT SEQUOIA	65
CYPRESS FAMILY: INCENSE CEDAR	77
SIERRA JUNIPER	81
YEW FAMILY: CALIFORNIA NUTMEG	83

THE ANGIOSPERMS
THE BROAD-LEAVED TREES	87
BIRCH FAMILY: WHITE ALDER	93
OAK FAMILY	95
CALIFORNIA BLACK OAK	97
CANYON LIVE OAK	101
NUTTALL DOGWOOD	103
WILLOW FAMILY	107
THE WILLOWS	109
BLACK COTTONWOOD	113
QUAKING ASPEN	115
BIG-LEAF MAPLE	119
CALIFORNIA LAUREL	121

BIBLIOGRAPHY	125

GLOSSARY	129

INDEX	131