No. 56. 



CALAMAGROSTIS NEGLECTA (Bhrh.) Gaertn. Fl. Wett. i. 94 (L799); 

 Arundo negleeta Bhrh. Beitr. vi. 137 (1791). 



Plant perennial, tufted, from a strong- rootstock. 



Culms erect, simple, nearly smooth, leafy nearly to the panicle, 1 to 2 feet tall. 



Leaves of the radical-tuft numerous, with open, smooth, chartaceous sheaths and 

 slender, involute, rather rigid, sharp-pointed blades half as long as the culm : leaves of 

 the culm 2 or 3; sheaths striate, nearly smooth, close, half open at the throat, nearly 

 as long as the internodes; blades erect, involute, 3 to 6 inches long; ligule acute, 

 decurrent, 1 to 2 lines long. 



Inflorescence an erect, closely-flowered, narrow, oblong panicle 2 to 4 inches long; 

 rays 4 to 6, in semiverticillate clusters at each of the 7 to 10 nodes of the hispid axis, 

 triangular, hispid, erect or spreading, unequal, 1 inch long or less, subdivided and 

 spikelet-bearing beyond the middle. 



Spiltelets turgid, 1£ lines long, with 1 perfect flower and a pilose rudiment; empty 

 glumes nearly equal, ovate, acute, slightly scabrous and hispid on the keels, obscurely 

 3-nerved, 1£ lines long; floral glume broadly oblong, erose-dentate at the truncate 

 apex, smooth, 4-nerved, 1 to 1| lines long; awn arising above the middle, barely ex- 

 ceeding the apex of the glume ; palet broadly oblong, obtuse, half as long as the glume ; 

 hairs of the callus and rudiment one-half to two-thirds as long as the floret. 



Plate LYI; a, spikelet; b, first empty glume; c, second empty glume; d, floret, 

 side view with the palet and rudiment brought out from the enveloping glume; e, 

 floral glume spread out, dorsal view. 



Oregon to Alaska and in northern Labrador. This form agrees well with the 

 specimens from Scandinavia, marked Arundo striata Timm., Calamagrostis stricta 

 Hartmann. and Deyeuxia negleeta Bhrh. The figure, however, represents a broader 

 panicled state than is usual. Tbe name has been applied to a species from the high 

 interior plains, which is G. robusta Vasey. 



