256 



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

 Yellow Spear-gra.s.>^.— A slender, tufted pereuuial, 4 to 6 dm. 

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

 Spikelets (a) G to 8 mm. long, 3- to 4-ilo\vered, with obtuse glumes, 

 tlie (lowering ones 4 mm. long and slightly pubescent on the keel 

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

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

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



