256 



Fig. 552. Poa lucida Yasey, Contrib. Nat Herb. 1: 274. 1893. 

 Yellow Spear-grass.— A slender, tufted perennial, 4 to 6 din. 

 high, with flat leaves and narrow but lax panicles 10 to 15 em. long. 

 Spikeleta (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 piaces, moist brook- 

 sides, canyons, etc., alt. 1,500-3,300 m. ; mountains of Colorado, 

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



