354 



FOREST TREES OF THE PACIFIC SLOPE. 



Bitter Cherry. 



Primus cmarginata (Dougl.) Walpers. 



DISTINGUISHING CHARACTERISTICS. 



Bitter cherry varies greatly in size ; from a slender-stemmed, much-branched, 

 tall or low shrub, much bent in high rocky, exposed sites, to a straight clean- 

 stemmed tree from 35 to 40 feet high and from 6 to 12 inches, or more, through. 



Fig. 166. — Primus emarginata. 



The thin bark is smooth, very dark brown on large trunks, but grayish brown 

 on small stems. Season's twigs are deep red, which fades into reddish brown 

 lower down. Mature leaves (fig. 166) very variable in size and texture, are 



