Bui. 367, U. S. Dept. of Agriculture. 



Plate VI. 



FiQ. 1.— An Almost Pure Stand of Deer-Grass (Epicampes rigens) on the Sandy 

 Soil of One of the Larger Arroyos on the Santa Rita Range Reserve. 



This grass is common in such situations. 



Fig. 2.— An Arroyo Filled with Mesquite, Cat's-Claw, and Other Shrubs on 



the Reserve. 



