184 



Fig. 166. Avena mortoiiiana Scribn. ; Bot. Gaz., 21 : 133. 

 Morton's Oat-orass. — A densely ca'Si)itose, erect perenuial 1 to 

 2.5 dm. high, with rather rigid leaves and narrow, simple ]>ani- 

 cles of one- to two-tlowered spilvelets. — At 3,900 to •4,-'00 in. alti- 

 tude, mountains of Colorado. Angust. 



