2G4 



Fig. 560. Poa argentea Howell, Bull. Torr. Bot. Club 15 : 11. 

 1888; Vasey, 111., N. Am. Grasses, 2: No. 72. Silvery Blve- 

 GRASS. A slender, smooth, densely ciiespitose, erect perennial 1.5 

 to 2.5 dm. high, Avitb flat leaves and narrow, oblong, rather loosely 

 flowered panicles 2 to 4 cm. long. Spikelets (a) oblong-lanceolate, 

 2- to 3-flowered, 6 to 7 mm. long, with thin, oblong, obtuse glumes, 

 the floral ones {h) smooth^ 4 to 5 mm. long. In the mountains 

 of western Oregon. July. 



