Bui. 177, Bureau of Plant Industry, U. S. Dept. of Agriculture. 



Plate IV. 



FlG. 1 . — MUHLENBERGIA PORTERI GROWING UNDER THE PROTECTION OF A CAT-CLAW. 



Fig. 2.— Isocoma coronopifolia Growing on Range Land. 

 TWO GRASSES GROWING IN THE INCLOSED AREA. 



