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. ^EDERI. 



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

 short-oblong, sometimes tf 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- 

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



79. C. ROSTRATA. Michx. , 



cf Spike short and 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., Oakes; also in Canada, where MX. 

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



80. C. INTUMESCENS. 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. Wahl.} 



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

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

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

 twice longer than the oblong-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. WaM.) 



tf Spike erect, slender, subsessile; 9 s pikcs 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- 

 quetrous, leafy ; Ivf. and bracts long, flat, wide, striate, scabrous on the edge. 

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

 ponds, common. 



/?. polystachya. Torr. 9 Spikes about 5, very long-cylindric, the lowest re- 

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

 town, N. Y., on the Highlands, Darratt. 



3 Pistillate spikes exsertly pedunculate. 



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



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

 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 ; st. 8 18' high, 

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



