Bui- 22, Div of Agrostoiogy. U S. Dept. of Agrlcukure 



Plate IV. 



Fig. 1.— Side Oats Grama, Grass Garden, Washington, D. G. 



Fig. 2. — Blue Grama iBouteloua oligostachya' as grown in Grass Station at 



Walla Walla, Wash. 



From a photograph by A. B. Leekeul)y. 



