173 



Fig. 469. Sporobolus filiformis (Thurb.) Scribn. New Comb. 

 ( Vilfa depauperata filiformis Thurb. in S. Wats. Bot. King Exped 

 376. 1871.) Slender Rush-grass. — A very slender, densely 

 tufted annual 0.8 to 3 (usually about 1.5) dm. high, with short, 

 narrow leaves, scape-like culms, and linear, few-flowered panicles. 

 Spikelets about 2 mm. long. — Moist soil in the mountains, Wash- 

 ington to California and eastward to Utah and ( ? ) Colorado. 

 J uly-September . 



