AGROSTIDE^. 



229 



Stamens 3, barbate. 



Resembling E. Wehheri and small forms of 0. exigua, but the 

 florets are smooth. 



Washington, Henderson 2249, in 1892. 



9. 0. Macounii (Scribu.). Stijpa Macounii Scribn., Macoim. 

 Uat. Can. PI. 5 : 390 (1890). Stijm 

 Richarcls07iii A. Gray, Man. Ed. 

 2:249(1856), not Link (1833). 

 O. Richardsonii Beal. Coult. Bot. 

 Oaz. 15: 111 (1890). 



Culms rather slender, 50-90 



cm. long. Slieaths much shorter 



than the internodes; ligule about 



2 mm. long on the lower leaves, 



and 5 mm. on the ujDper; blades 



of sterile shoots scabrid, slender, 



20—40 cm. long, those of the culm 



three, flat or soon involute, the 



longest 2 mm. wide, the upper 



one 10-20 cm. long. Panicle ex- 



serted, loose, slender, 7-12 cm. 



long; rays mostly in pairs, the 



longest 2-4 cm. long, bearing a 



few spikelets near the apex. 



Empty glumes subequal, oblong, 



acutish, brittle when mature, 



mostly 3-nerved, 4-5 mm. long; 



floret pubescent, linear-oblong, 



becoming dark brown, about 3 



mm. long; callus short and blunt; A 



awn tortuose, slightly twisted, 9- j,^^^ 4:\.-Oryzopsis Macounn. A, 

 16 mm. long. spikelet; a, floret. (Scribuer.) 



Maine, C. E. Faxon, collected near Sebago Lake. 



Maine. Lake Superior to Montana. 



10. 0. Kingii (Boland.). Stijxi Kingii Boland. Proc. Calif. 

 Acad. 4: 170 (1870). 



