263 



Fig. 559. Poa vaseyochloa Scribn. U. S. Dept. Agr., Div. 

 Agros., Cir. 9:1. 1899. (P. pulcheUa Vasey.) Vasey's Blue- 

 grass. — A slender, caespitose perennial with short, filiform leaves, 

 smooth, erect culms 1 to 1.5 dm. high, and delicate, open panicles 

 2 to 3 cm. long. Spikelets 3- to 5-flowered, 6 to 8 mm. long, with 

 short, and usually obtuse outer glumes (a), and scabrous, obtuse, 

 flowering glumes (c). — Moist places among rocks, Idaho, Wash- 

 ington, and Oregon. April, May. 



