296 



FOREST TREES OF THE PACIFIC SLOPE. 



Longevity. — Not fully determined. Undoubtedly a long-lived tree, probably 

 reaching an age of at least 250 to 300 years. Trees from 10 to 18 inches in 

 diameter (canyon growth) are from 98 to 156 years old. 



Fig. 132. — Quercus chri/solepis. 



RANGE. 



Southwest corner of Oregon and southward throughout mountains of California, except 

 east side of Sierras and southeastern desert, to northern Lower California ; eastward through 

 mountains of central and southern Arizona, northern Sonora, and southwestern New 



