316 



GRASSES OF IOWA. 



^ 'v«* b 



Fig. 222. Agropyron Rtchardsoni. a. glumes, b. spikelet. (Div. Agros. U.S. Dept. Agrl. ) 



North America. Minnesota (St. Croix, Parry), South Dakota to 

 the Saskatchewan and British Columbia; in the Rocky Mountains of 

 Colorado and the L intah Mountains of Utah (Duchesne River 241, 

 East Provo Canon, alt. 8000 ft., East Lake Fork, West Bear Lake, 254 

 Pammel), Rocky Mountains (Hall and Harbour 656), Wyoming 

 (Burnt Fork 244). 



2. AGROPYRON CANINUM. 



Agropyron caninum R. and S. Syst. 2: 756. 1817. Watson and 

 Coulter. Gray. Man. Bot. 672. 1890. (6ed.) 



Agropyrum caninum Reichenb. Scribner. Grasses of Tenn. Bull. Univ. 

 Tenn. Agr. Exp. Sta. 7: 123. /. 779. 1894. 



