Bui. 1 5, Bureau of Plant Industry, U. S. Dept. of Agiiculture. 



Plate III. 



Fig. 1.— Grazed Nuttall-s Saltbush, Westfall, Oregon. 

 No other vegetation shown in foreground except one bunch of cactus. 



Fig. 2.— Black Sage (Artemisia rigida) grazed, Westfall, Oregon. 



Common black sage (Artemisia tridentata) in background. 



