252 



FOREST TREES OF THE PACIFIC SLOPE. 



Central and southern California, through central Nevada, southern Utah, northern 

 Arizona, and western New Mexico ; in valleys and lower foothills. 



California.— Sacramento River Valley, foothills of Sierras and adjacent coast ranges ; 

 abundant on fiats and streams up to 2,000 feet ; northward to about mouth of Pitt River, 



Fig. 110. — Populua fremontii: a, seed pods. 



and westward to Whiskeytown (Shasta County). Locally noted in Tahoe and Stanislaus 

 National forests at from 500 to 2,000 feet, near Jenny Lind (road to Salt Springs Valley. 

 Calaveras County); Deer Creek on Lassen Peak (Tehama County i. Not detected on 

 seaward coast mountains nor in middle ranges of northern California ; but abundant in 



