586 CLX. CYPERACE^E. CAREX. 



trous, inflated, nerved, rostrate, and at last recurved, 2-toothed, diverging, twice 

 longer than the ovate and obtuse glumes ; plant yellowish-green. Mass., N, 

 Y., Mich. Formerly confounded with C. flava. 



77. C. JEDERI. 



Spikes sometimes androgynous; 9 about 4, clustered, nearly sessile, 

 short-oblong, sometimes <$ above or below, bracteate ; perig. rather obovate, 

 subinflated, nerved, bidentate, diverging with a subulate beak, a little longer 

 than the ovate glume ; st. 2 10' high, leafy. Pale yellow. Mass, and N. Y. 

 abundant in Pittsfield, Mass., and at Niagara Falls. 



78. C. TENTACULATA. Muhl. 



9 Spikes 2 4, oblong, cylindric, bracteate, upper one sessile, the rest 

 nearly sessile, densely flowered ; perig. ovate, inflated, long-rostrate, bidentate, 

 nerved, diverging, glabrous, twice longer than the ovate and small scabro- 

 mucronate glume ; st. 1 2f high, often large, triquetrous ; Ivs. linear-lanceo- 

 :ate, longer than the stem. In clusters in wet or marshy places ; common. 



79. C. ROSTRATA. Michx. 



tf Spike short ajid small ; 9 spikes 2 3, sub-globose, or capitate, bracte 

 ate ; perig. aggregated into a head, small, erect, or subdiverging, oblong-conic, 

 very long-rostrate, slightly inflated at the base, twice longer than the ovate- 

 oblong, acutish glume ; st. 8 16' high, few-leaved, erect, stiff". Pale yellow. 

 At the base of the White Mts., N. H., Oakcs; also in Canada, where MX. 

 found it. Has been called a variety of C. Xanthophysa WaU. 



80. C. INTUMKSCENS. Rudge. (C. folliculata. Schk. fig. 52.) 



tf Spike oblong, pedunculate ; 9 spikes 1 3, few-flowered, approximate, 

 bracteate, erect, nearly sessile, the lower one sometimes remote and exsertly 

 pedunculate ; perig. ovate-conic, large and much inflated, acuminate-rostrate, 

 bidentate, nerved, diverging, very glabrous, thrice longer than the ovate-cuspi- 

 date glume; st. a foot or more high, erect, stiff, leafy, dark green and very 

 glabrous. Wet grounds, in open woods or marshes ; common. 



/?. globularis. Gray. 9 spikes large, globular, many-fruited. Grows in the 

 same situations. 



81. C. FOLLICULATA. (C. Xanthophysa. Watt.} 



9 Spikes 2 4, ovate or capitate, densely flowered, distant, the peduncles 

 sometimes projecting far beyond the sheaths, often tf at the apex, long brac- 

 teate ; perig. oblong-conic, much inflated, diverging or horizontal, long-rostrate, 

 twice longer than the oTalong-ovate, acute glume; st. 2 5f high, leafy; Ivs. 

 linear-lanceolate, long and flat. Pale yellow. In wet or marshy places ; com- 

 mon. 



82. C. LUPULINA. Muhl. (C. lurida.-JFoAZ.) 



$ Spike erect, slender, subsessile; 9 spikes 2 4, ovate-oblong, large 

 and thick, or oblong-cylindric, short-pedunculate, erect, densely flowered, 

 approximate, the lowest sometimes long-pedunculate and distant ; perig. 

 ovate-conic, ventricose, long, conic-rostrate, bicuspidate, nerved, glabrous, about 

 thrice longer than the ovate-lanceolate, acuminate glume ; st. 1 3f high, tri- 

 q'letrous, leafy ; Ivf. and bracts long, flat, wide, striate, scabrous on the edge. 

 Bright green. Finely named from its hop-like spikes. Marshes and abwut 

 ponds, common. 



(1. polystachya. Torr. 9 Spikes about 5, very long-cylindric, the lowest re 

 mote and very long- pedunculate ; perig. less inflated. Swamps, in Phillips 

 lown, N. Y., on the Highlands, Darra'i. 



3. Pistillate spikes exsertly pedunculate. 



83. C. PLANTAGINEA. Lam. Schk., fig. 70. (C. latifolia. Wahl.) 



tf Spike erect, large, subclavate, with oblong and acute glumes ; 9 spike: 

 3 5, oblong, erect, remote, sparse-flowered, 2 upper nearly inclosed-peduncu 

 late, the lower ones exsertly-pedunculate, with subulate bracts; perig. oblong, 

 triquetrous-elliptic or cuneiform, tapering at either end, recurved at the apex, 

 and entire at the orifice, longer than the ovate-cuspidate glume; s'.8 18' high, 

 erect, triquetrous, with dark brown "heaths; Ivs. radical, broad, ensiform, strongly 



