586 CLX. CYPERACEA. 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. ALDERI. 
Spikes sometimes androgynous; Q 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. trenracutatTa. Muhl. 
Q 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; vs. linear-lanceo- 
late, longer than the stem.—In clusters in wet or marshy places; common. 
79. C. rostrata. Michx. 
3’ Spike short and small; Q 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 Wahl. 
80. C. 1ntumescens. Rudge. (C. folliculata. Schk. fig. 52. 
3 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. 
B. globularis. Gray. Q spikes large, globular, many-fruited—_Grows in the 
same situations. 
81. C. rotuicuLATa. (C. Xanthophysa. Wahi.) 
Q 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; lws. 
linear-lanceolate, long and flat.—Pale yellow. In wet or marshy places; com- 
mon. 
82. C. nuputina. Muhl. (C. lurida. Wadi.) ‘wi 
Spike erect, slender, subsessile; Q 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 ; /vs..and bracts long, flat, wide, striate, scabrous on the edge.— 
Bright green. Finely named from its hop-like spikes. Marshes and about 
ponds, common. 
B. polystachya. 'Torr. Q 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 pedunculate. 
83. C. pranracinea. 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 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; /vs. radical, broad, ensiform, strongly 
