β. pedicellata Dew., has pistillate spikes ovate-oblong, short-pedicellate erect, loose-flowered; perig. more numerous. - Grows in the same situations.
98C. vestita Willd. (B. t. 120.) Spike single, rarely 2, cylindric-oblong; spikes 2, ovate-oblong, sessile, subapproximate, bracteate, often with stamens above; perig. ovate, suborbicular, subtriquetrous, nerved, short-rostrate, bifid, pubescent, a little longer than the ovate-oblong, acutish, submucronate glume; st. 18 - 30', acutely triangular and leafy below. - Common in wet places over the country.
99 C. pubescens Muhl. (B. t. 60.) Spikes 2 - 3, oblong, rather loose-flowered, erect, bracteate, the lowest pedunculate; perig. lance-ovate, triquetrous, rostrate, nearly entire at mouth, pubescent, a little longer than the ovate-oblong, carinate, inucronate glumo; st. 10 - 20' high, and with the leaves, pubescent. - Moist woods and meadows; common.
100 C. flava L. Spikes 2 - 4, ovate-oblong, approximate, sometimes androgynous; perig. ovate, closely imbricate, costate, bidentate, reflexed with a long, curved beak, longer than the ovate-lanceolate glume; st. 10 - 20' rather obtusely angled or triquetrous; glabrous; yellowish-green. - Wet and cold soils; common in this country as well as in Eur.
β. lepidocarpa. Taller and more slender, with short, round-ovate spikes aggregated, or except the lower, with perig. rostrate and recurved in maturity, about twice as long as the ovate, obtuse glumes. - With the other. (C. lepidocarpa, Ed. 2.)
101 C. ae deri Ehrh. Spikes sometimes androgynous: 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', leafy. - Palo yellow. Mass and N. Y., abundant in Pittsfield, Mass., and at Niagara Falls.
102 C. folliculata L. nee. Schk. Spikes 2 - 4, ovate or capitate, densely flowered, distant, the peduncles sometimes projecting far beyond the sheaths, often
at the apex, long bracteate; perig. oblong-conic, much inflated, diverging or horizontal, long-rostrate, twice longer than the oblong-ovate, acute, long-awned glume; st. 2 - 5f leafy; lvs. linear-lanceolate, long and flat. - Pale yellow. In wet or marshy places; common. (C. Xanthophysa Wahl.)
103 C. rostrata Mx. Spike short and small; spikes 2 - 3, sub-globous, or capitate, bracteate; perig. aggregated into a head, small, erect, or subdiverging, oblong-conie, very long-rostrate, slightly inflated at the base, twice longer than the ovate-oblong, acutish glume; st. 8 - 16', few-leaved, erect, stiff. - Pale yellow. At the base of the White Mts., N. H.. Oakes; also in Canada, where Mx. found it. Not recognized as the plant of Michaux till 1840, Sil. Jour. XXXIX, p. 52.
104 C. turgescens Torr. Spike oblong, cylindric, erect; spikes 2 or 3, ovato-globous, few (10 to 12)-flowered, highest sessile and near the , lowest often quite remote, exsertly pedunculate, perig. ovate, inflated, diverging, conic-rostrate, bidentate, striate, twice longer than the ovate, acute glume; culm 2 to 3f, slender, longer than the leaves, yellowish or pale green. - Pla. to La. (Chapm. Ingalls.)
105 C. Elliottii Schw. Spike cylindric, 1'long, with oblong, obtuse glumes; spikes 2 or 3, ovate, roundish, sessile, upper staminate at apex, lowest sometimes pedunculate; perig. ovate-triquetrous, glabrous, veined, rostrate, 2-toothed, about twice as long (3") as the ovate, obtuse glume; culm 1 to 2f, triquetrous, recurved. - N. Car. to Fla. (C. castanea Ell. nee Wahl. C. Baldwinia Dew. in Sil. Jour.)
106 C. intumescens Budge. (B. t. 148.) Spike oblong, pedunculate; 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 (5 to 6") than the ovale-cuspidate glume; st. a foot or more high, erect, stiff", leafy, dark green and very glabrous. - Wet grounds, in open woods or marshes; common. (C. folliculata Schk.)
107 C. lupulina Muhl. (B. t.149.) Spike erect, slender, subsessile; spikes 2 - 4, ovate-oblong, large, (20" by 9") and thick, or oblong-cylindric, short-pedun-culate, erect, densely flowered, approximate, the lowest sometimes long-pedunculate and distant; perig, ovate-conic, ventricous, long, conic-rostrate, bicuspidate, nerved, glabrous, about thrice longer than the ovate-lanceolate, acuminate glume; st. 1 - 3f, triquetrous, leafy; lvs. and bracts long, flat, wide, striate, scabrous on the edge. - Bright green. Well named from its hop-like spikes. Marshes and about ponds, common. (C. lurida Wahl.)