120 



Fig. 416. Aristida desmantha Trin. & Rupr., Mem. Acad. St. 

 Petersb. (VI), 5 : 199. 1842. Western Bunch-grass. — Aslender, 

 but rather rigid, erect, glabrous perennial 3 to 6 dm. high, with 

 narrow, attenuate-pointed leaves and narrow panicles about 12 

 cm. long. Spikelets with the nearly equal outer glumes (b) about 

 12 mm. long, exceeding the flowering glume (a), which bears 3 

 nearly equal, reflexed, somewhat coiled awns about 24 mm. long. — 

 Dry soil, Kansas (?), Indian Territory, and Texas. August. 



