AUUOSTIDE.E. 



229 



Stamens 3, barbate. 



llcsemblin^' A'. W'ebberi and small forms of 0. exigua, but the 

 florets are smooth. 



Washington, Ilendemtn 2249, in 1892. 



9. 0. Macounii (Soribn.). Slipa Macounii Scribn., Macoiiu. 

 Uat. Can. PI. 5: a!»0 (1890). Slipa 

 liirliardmnii A. Gray, Man. Ed. 

 2:249(1850), not Link (1833). 

 O. lik'hardsonii Heal, Coult. Bot. 

 Gaz. 15: 111 (1890). 



Culms ratiier slender, 50-90 



cm. long. Sheaths much shorter 



than the internodes; ligule about 



2 mm. long on the lower leaves, 



and 5 mm. on tlie upper; blades 



of sterile shoots seabrid, 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 wlien mature, 



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



floret pubescent, linear-oblong, 



hecoming dark brown, about 3 



mm. long; callus short and blunt; A 



awn tortuose, slightly twisted, 9- p,^ AX.-Oryzapsis Macounii. A, 

 IGmm. lonff. spikelet ; «, Horet. (Scribuer.) 



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



Maine, Lake Superior to Montana. 



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

 Acad. 4:170(18rO). 



