256 



Fig. 552. Poa lucida Vasey, Contrib. Xat. Herb. 1: 274. 1893. 

 Yellow Spear-grass. A slender, tufted pereuuial, 4 to 6 dm. 

 high, with flat leaves and narrovrbut lax panicles 10 to 15 cm. long. 

 Spikelets (a) 6 to 8 mm. long, 3- to 4-flowered, with obtuse glumes, 

 the flowering ones 4 mm. long and slightly pubescent on the keel 

 and lateral nerves near the base. Dry, rocky places, moist brook- 

 sides, canj'ons, etc, alt. 1,500-3,300 ni. ; mountiiins of Colorado; 

 Wyoming, Montana, and British Columbia. July-September, 



