179 



Fig. 161. Trisetum montanum Vasey ; Beal, Grasses N.Am., 2 : 

 379. Rocky Mountain Oat-grass. — A slender, erect, or ascend- 

 ing native grass 3 to 8 dm. high, with narrow, tiat leaves and 

 many-fiowered. more or less contracted panicles 8 to 12 cm. long. — 

 Mountains of Colorado and New Mexico. July, August. 



