298 



Fig. 594. Agropyron spicatum (Pursh> Scribu. »£: Smith, Bull. 

 U. S. Dept. Agr.. Div. Agros. 3 : 12. 1*96. Colorado Blue-stem. 

 Western Wheat-grass. — A rigid, upright, glaucous peremiial 3 

 to 12 dui. high, from creeping rootstocks. with rather firm, bluish- 

 green leaves, aud straight, beardless spikes 6 to 14 cm. long. 

 Spikelets 7- to 13-flowered. 12 to 20 mm. long, with lanceolate, 

 acumiuatf-pointed, empty glumes (a), and acute flowering glumes 

 8 to 12 mm. long. — Dry or moist soil, "Wisconsin to Iowa, and 

 westward to Washington. Texas, and Arizona. June-September. 



