225 



Co 





Fig. 207. Bouteloua burkii Scribu. ; Beal, Grasses N. Am., 2 : 

 422. Burk's Graiia. — A slender, tufted perennial 1.5 (rarely 30) 

 cm. high, with short, spreading leaves and slender, horizontal 

 spikes 1 to 2 cin. long. — Sandy plains and dry mesas, western 

 Texas. [Northern Mexico.] April-.July. 

 11162— No. 7 1.5 



