112 



Fig. 106. MTJHI.ENBERGIA GRACII.LIMA Torr. Pac. R. R. Rept. 4^ : 155. 



1857.— A den.sely tufted perennial, with .■^lender culms 2-4 dm. (8'-16') high, nu- 

 merous, involute basal leaves and open capillary panicles 10-20 cm. (4'-8') long. 

 Branches of the panicle capillary, 2-12 cm. (l'-5') long. Spikelets (a,&) about 

 3 mm. dh") long; empty glumes one-half to two-thirds as long as the 2-toothed 

 and nearly smooth flowering glume (c); awn slender, 2-4 mm. (l"-2") long.— 

 Dry plains, Kansas to Colorado, Texas, and Arizona. July to October. 



