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Fig. 598. Agropyron vaseyi Scribn. & Smith, U. S. Dept. 

 Agr., Div. Agros. Bull. 4 : 27. 1897. Vasey's Bunch-grass.— A 

 slender, wiry, erect, densely csespitose perennial 3 to 4.5 dm. high, 

 with short, involute, setaceous leaves, and few-flowered, inter- 

 rupted spikes 4 to 8 cm. long. Spikelets rather remote, 3- to 

 5-flowered, 8 to 10 mm. long. Empty glumes awnless; flowering 

 glumes with a divergent awn 8 to 10 mm. long. — Dry, gravelly 

 soil, Montana and Nevada to Oregon and Washington. May- 

 August. 



