154 



Fic. 430. Stipa viridula Trin. Mem. Acad. St. Petersb. (VI.) 

 2: 39. 1836. Fkatiieii BuNiii-iiii.vss.— A slender or rather stout, 

 Ccespitofse, erect i)erennial ."> to 10 dm. liii:;h, with iiivoliit('-i)ointt'd 

 leaves and narrow, C(nitracted panicles V2 to 20 cm. long. Spike- 

 lets with nearly cipial, subulate pointed empty glumes 6 to <J mm. 

 long, and hairy or pilose flowering glume, which is about 5 mm. 

 'ong and has a short, obtuse callus. Awn about 24 mm. long, 

 linally separating I'rom the glume.— Colorado to Montana, and 

 westward. 



