No. 39. 

 CALAMAGROSTIS CUSICKII Vasey, Bot. Gaz. x. 224. 



Plant perennial, loosely tufted, with numerous sterile shoots and few tlower-bearing 

 culms, from strong creeping rootstocks. 



Culms erect, simi)le, smooth, .'5 to 4 feet high. 



LcfircK ol' sterile! shouts with ('lose, overlapping sheatlis and Hat, slightly hispid. 

 rtexible blades 1(» to 1") inches long. Leaves of culm 3 or 4 ; sheaths striate, nearly 

 smooth, half as long as the interiiodes, or the lower ones <'(|ualing the shorter inter 

 nodes; blades Hat, hispid on botli sides. to 1(1 inches long, 2 to .'5 lines wide; lignle 

 obtuse, decnrrent, 2 to -'5 lines long. 



I uJioreHceuce a rather closely tlowered, oblong, erect i)anicle inches long, 1 inch 

 thick; rays crowded in 10 to 12 semiverticillate clusters, ascending, unequal, the 

 longei' (li inches) subdivided and bearing clusters of short-pediceled .spikelets beyond 

 the middle, the shorter ray spikelet-bcaring to the base. 



Spikeletn narrow, iwjute, 2 to 2J lines long; empty glumes lanceolate, acute or acii 

 nnnate. convex, neaily smooth, rigid: first glume 1-iierved. 2 to 2:^ lines long; second 

 glume obscurely 3-nerved and slightly siiortcr; Horal glume oblong, 4toothed at the 

 .slightly cleft apex, thin, smooth, 4-nerved above, li lines long; awn attached below 

 the middle, slightly exceeding the glume: hairs of the callus and very small rudiment 

 scanty, A as long as the glume: ])alet oblong, obtuse, thin, 2nerved, 1.^ lines long. 



Pr.ATi", XXXIX; (/, si)ikelet enlarged (i times; h, empty glumes; c, Horal glume, 

 side view ; d, i)alet, ventral view, partly ujirolled. 



Eastern Oregon, at an altitude of ~),iM) to (!,(t(i(> feet. This grass produces a large 

 <|u;intity of foliage ami jjrobably wiU be found useful for cultivation. 



