223 



Fig. 20."). Bouteloua hirsuta (ILBK.) Lag. Bristly Mes- 

 quit. A crespitose perennial 1.5 to 4 dm. high, with erect or 

 ascending culms, flat leaves, and one to three more or less spread- 

 ing, densely flowered spikes 2 to 4 cm. long. Dry prairies and 

 sandy plains, Illinois and Wisconsin to South Dakota, Nevada, 

 Arizona, and Texas, and ( "! ) southern Florida. [Mexico and Lower 

 California.] July-September. 



