295 



Fig. 277. Poa arida Vasey ; Britton and Brown, 111. Fl., 1 : 208. 

 Prairie SrEAR-GRASs. — An erect, often rather rigid, stoloniferous 

 perennial 3 to dm. liigli, with Hat or folded, stifl" leaves and nar- 

 row, rather densely flowered panicles 8 to 15 cm. long. — Meadows 

 and low grounds. Northwest Territory to Kansas and Arizona. 

 April-Angust. 



