a2 MISC. PUBLICATION 101, U. S. DEPT. OF AGRICULTURE 
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Ficgurnp 11.—Bitterbrush, or antelope-brush (Purshia tridentata), one of the most 
widely distributed and abundant western shrubs, and extensively cropped by 
sheep, goats, cattle, deer, and antelope. It is especially valuable on winter, late 
fall, and spring range: A, sterile spray; B, flowering spray; C, fruiting spray ; 
D, fruit; B, leaf 
Bitterbrush (Purshia tridentata) (fig. 11) is one of the most 
widely distributed western shrubs, ranging from Montana to New 
Mexico, California, Washington, and British Columbia. It is an 
