586 CLX. CYPERACEiE. 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 androg^mous ; 9 about 4, clustered, nearly sessile, 

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

 subinflated, nerved, bidentate, divers^ing 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. 



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

 nearly sessile, denselv flowered ; pcrifr. 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. R0STR.\TA. Michx. 



^ Spike short and small; 9 spikes 2—3, sub-globose, or capitate, bracte- 

 ate ; peris, 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, 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. Xanlhophysa WahJ. 



80. C. ixTL-MEscENS. 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, verv 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, Q spikes large, globular, many-fruited.— Grows in the 

 same situations. 



81. C. FOLLICULATA. (C. Xauthophvsa. Wnhl.) 



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



sometimes projecting far bevond the sheaths, often J^ at the apex, long brac- 

 teate ; peris, oblong-conic, m\ich inflated, diverging or horizontal, long-rostrate, 

 twice longer than the oblong-ovate, acute glume; 5/. 2 — 5f high, leafy; Ivs. 

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

 mon. 



82. C. LrpuLiXA. Muhl. (C. lurida. Wafd.) 



J* 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, leafv ; Iv^. and bracts long, flat; wide, striate, scabrous on the edge. — 

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

 ponds, common. 



(i.pnlystachya. 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, Barrati. 



3. Pistillate spikes exsertly pedunculate. 



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



^ 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 cuneitbrm, tapering at either end, recurved at the apex, 

 and entire at the orifice, longer than the ovate-cuspidate glume; sl.Q — 18' high, 

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



