172 



Fig. 468. Sporobolus simplex Scribu. U. !S. Dept. Agr. Div. 

 Agios. Hull. 11 : 4S, lig. 6. July, 1898. Moi'ntaix Dkoi"- 

 SEED. — A low, densely citspitosc, leafy aunual 0..") to 1.5 dm. 

 high, with smooth culms, short, Hat leaves, ami linear iiauicli's 

 2 to 1 em. long. Spikelets 2 to 2.3 mm. long, with broadly ob- 

 tuse or truncate empty glumes (a), which are hardly one-hall" as 

 long as the uiucnmatc-poiuted (lowering glumes. — Moist places 

 in the motintains of Colorado and Idaho. .Iuly-Sej)tember. 



