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Fig. 555. Poa cusickii Vasey, Contrib. U. S. Nat. Herb. 1 : 271. 

 1893. Cusick's Blue-grass. — A densely ctespitose, glabrous 

 perennial, 3 to 4 dm. .high, with very narrow leaves and con- 

 tracted panicles 6 to 10 cm. long. Spikelets (a) 3-to 5-flowered, 

 8 to 10 mm. long, with acute empty glumes and lanceolate, acute 

 flowering glumes which are 5 to 6 mm. long and finely scabrous on 

 the back, at least below. — In canyons, Oregon and Idaho. May, 

 June. 



