Bui. 1 77, Bureau of Plant Industry, U. S. Dept. of Agriculture. 



Plate VI. 



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Fig. 1 — An Arroyo Producing Brush and Cacti but Very Little Grass. 





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Fig. 2.— Field Containing Baileya multiradiata, a Conspicuous Plant about the 

 Lower Border of the Perennial-Grass Region. 



AN ARROYO AND A PERENNIAL-GRASS FIELD IN THE INCLOSED AREA. 



