304 



Fig. 600. Agropyron arizonicum Scribu. &. Smith, U. S. Dept. 

 Agr., Div. Agros. Bull. 4 : 27. 1897. Arizona Wheat-grass. — A 

 glaucous, erect perennial 4.5 to 6 dm. high, with soft, flat leaves 

 15 to 18 cm. long, nodding spikelets 12 to 22 cm. long, and rather 

 remote, 5- to 7-flowered spikelets, 18 to 24 mm. long. Empty 

 glumes (a) about one-half as long as the spikelets; flowering 

 glumes long-awned ; awn divergent, about 24 mm. long. — Moun- 

 tains, New Mexico and Arizona. [Mexico.] August, September. 



