Fig. 436. Stipa occidentals Thuib. Bot. Wilkes Exped. 483. 

 1874. Western' Needle-grass. — A slender, erect perennial 3 to 

 6 dm. high, with rigid, involute leaves and contracted panicles 6 

 to 12 cm. iong. Spikelets about 10 mm. long, flowering glumes 

 (b) pubescent, 6 to 7 mm. long. Awn 3 cm. long, plumose below. — 

 Dry soil and rocky banks of the plains and foot-bills, Nevada, 

 California, Oregon, and Washington. May-July. 



