OP ARTS AND SCIENCES. 109 



wide), the lowest short-peduncled, the others nearly sessile : bracts 

 possessing short sheaths, the two lowest leafy, the upper scarcely 

 surpassing the staminate spike : scales large and somewhat rigid, the 

 staminate broadly ovate, obtuse, muticous or minutely mucronate, yel- 

 lowish green, the pistillate oval or obovate with the back three-nerved 

 and strongly cuspidate : perigynium (not perfectly mature) exceeding 

 the scale, evidently stipitate, lance-oblong, very slightly beaked, com- 

 pressed-triangular, many-striate, grajish green, the orifice slightly 

 emarginate (whole perigynium two lines long). — Salt plains of the 

 Rocky Mountains, Donitz." 



Section VI. SPIROSTACHY^, Drejer, Symb. Car. 10. Peri- 

 gynium smooth or minutely granulated or rarely somewhat serrate 

 on the margins, prominently nerved, mostly yellowish, sqiiarrose, 

 mostly beaked, the orifice entire : staminate spike mostly single ; 

 pistillate spikes two to five, short (usually an inch or less long), yellow 

 or fuscons, compactly flowered : stigmas three. — Medium-sized spe- 

 cies, growing in meadows and grassy swales. G. pallescens has an 

 entirely beakless perigynium. 



A. Granulares. Spikes scattered, cylindrical, the lowest long-stalked; bracts 

 erect, long and leafy ; sheaths short or nearly obsolete. 



144. Carex longicaulis, Boeckeler, Flora, 1882, 62. 



" Plant tall, bright green : rhizome elongated, horizontal, hard and 

 thick, nodose and branched, about the size of a goose-quill, fibrils 

 numerous and rigid : culm two to four feet high, slender, scarcely a 

 line in diameter at the middle, strictly erect, acutely angled, smooth, 

 many-leaved toward the base : sheaths herbaceous, nearly laminiferous : 

 leaves somewhat remote, stiflly herbaceous, long (one to two feet long 

 and one and a half to three inches wide), narrowly acuminate, towards 

 the apex somewhat toothed, the upper not rarely surpassing the culm : 

 spikes four or five, more or less contiguous or the lower one a little 

 remote, the staminate small, sessile (three to eight lines long), some- 

 what clavate and in color grayish yellow, the pistillate grayish green, 

 short-peduncled, densely flowered, the lowest nearly cj'lindrical (eight 

 to ten lines long), the upper ones often very short, oblong: bracts 

 leafy-setaceous from yellowish and puberulent sheaths, the lowest 

 scarcely reaching the staminate spike: staminate scales long-oblong, 

 obtusish, slightly mucronate, the margin pale-hyaline : pistillate 

 scales broadly oval or lance-oval, pale, the keel bright green, three- 

 nerved, shortly mucronate : perigynium green, equalling or slightly 

 surpassing the scale (one and three fifths lines long), broadly ellipsoid, 



