586 ■ CLX. CYPERACE^. 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. ^DERI. 



Spikes sometimes androgjTious ; 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 tJie ovate and small scabro- 

 inucronate 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. 



^ Spike short and small ; 9 ^pi^^^s 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. Xantfwphijsa Wahl. 



60. C. INTUMESCENS. Rudge. (C. folliculata. Schk. fig. 52.) 

 1^ Sjnke 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-cu.spi- 

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

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



fi. globidaris. Gray. 9 spikes large, globular, many-fruited. — Grows in the 

 same situations. 



81. C. FOLLICULATA. (C. Xaulhophysa. Wahl.') 



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

 sometimes projecting far beyond the sheaths, often J^ 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. LUPULlNA. Muhl. (C. lurida. Wa/il.) 



(^ Spike erect, slender, s|jibsessile ; 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- 

 quetrous, leafy ; Ir.'. and bracts long, flat, wide, striate, scabrous on the edge. — 

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

 ponds, common. 



0. 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, Barratt. 



3. Pistillate spikes exsertly peduncidat£. 



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



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

 3 — 5, oblong, erect, remote, sparse-flowered, 2 upper nearly inclo.sed-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 



