5S6 CLX. CYPERACEiE. Carex. 



trous, inliated, nerved, rostrate, and at last recurved, ii-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 ^ 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 ; si. 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. 



^ Splice 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 ; 5^. 8—16' high, few-leaved, erect, stiflf.— 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 WoM. 



80. C. INTUMESCENS. Rudgc. (C. folliculata. Schk. fig. 52.) 



^ 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. Xauthophysa. Wahl.) 



9 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— 5 f high, leafy; Ivs. 

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

 mon. 



82. C. LUPULiNA. Muhl. (C. lurida. Walil.) 



^ 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- 

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

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

 ponds, common. 



^.pnlystachi/a. Torr. 9 Spikes about 5, very long-cylindric, the lowest re- 

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

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



3. Pistillate spikes exsertly pedunculate. 



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 inclosed-peduncu- 

 late, the lower ones exsertlv-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 ; sf. 8 — 18' high, 

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



