542 CYPERACE^. (sedge FAMILY.) 



Swamps and low grounds, Florida to Mississippi, and northward. — Culms 

 very slender, 10-2° high. 



54. C. juncea, WiUd. "Spikes 2-4, slender, erect, brownish purple, the 

 sterile one tiliform, the fertile loosely-flowered, somewhat remote, the lowest on 

 an exserted peduncle ; perigynia 3-angled, spindle-shaped, rough at the apex, 

 with the orifice entire ; scales ovate, obtuse, and longer than the perigynia, or 

 lanceolate, mucronate, and about equalling them." Boott. (C. miser, Buckley.) 



— Summit of Roan Mountain, North Carolina, Bucklei/. — Leaves somewhat 

 bristle-form, shorter than the culm. 



t t Spikes ci/lindrical or oblong, densely many-jlowei-ed : pericjynia ovate or roundish. 



55. C. SCabrata, Schw. Sterile spike short, single; fertile spikes 4-5, 

 rather distant, on erect exserted peduncles ; perigynia ovate, rough, spreading, 

 with few rather prominent nei-ves, tapering into a 2-cleft beak, longer than the 

 oblong acute brownish scale. — Shady swamps, North Carolina, and northward. 



— Culms (l°-l5° high) and broadly linear thin leaves very rough. Bracts 

 leaf-like, destitute of sheaths. 



56. C. flacca, Schreb. Sterile spikes 1-2, long and rigid; fertile spikes 

 2-3, cylindrical, all on drooping peduncles, commonly sterile at the summit; 

 perigynia yellowish, compressed-3-angled, round-elliptical, slightly roughened, 

 emarginate or entire at tlie orifice, longer than the oblong obtuse or pointed black 

 scale. — Marshes, Alabama to North Carolina {Citrtis), and northward. — Culms 

 1 ° - 2° high, rough-angled, longer than the rigid glaucous leaves. 



57. C. glaueescens, Ell. Sterile spike single, long-peduncled ; fertile 

 spikes 4- 10, cylindrical (l'-2' long), all on long and drooping peduncles, mostly 

 sterile at the summit ; lowest bract exceeding the culm, the others shorter and 

 bristle-like ; perigynia glaucous, ovate, corapressed-3-angled. nerveless, except at 

 the angles, narrowed into an emarginate point, longer than the brown rough- 

 awned scale. — Pine-barren ponds, Florida to North Carolina. — Culms 2° -4° 

 high, rough-angled above. Leaves glaucous, as long as the culms, bristle-like at 

 the summit. 



58. C. verrucosa, Ell. Sterile spikes 1-3, sessile or short-peduncled, 

 often with fertile flowers variously intermixed; fertile spikes 4- 10, cylindrical 

 or oblong, the upper ones sessile and erect, the lower long-peduncled and droop- 

 ing ; perigynia glaucous, globose-obovate, 3-angled, strongly nerved, abruptly 

 contracted into a short and entire point, about as long as the brown rough- 

 awned scale. — Margins of ponds and rivers, Florida to North Carolina. — 

 Culms, leaves, and bracts as in the preceding. 



59. C. Cherokeensis, Schk. Sterile spikes 2-4, slender; fertile spikes 

 5-15, often 2-3 from the same sheath, oblong or cylindrical, sterile at the sum- 

 mit, all on long and nodding peduncles ; perigynia whitish, oblong, compressed- 

 3-angled, short-beaked, with the orifice membranaceous and obliquely 2-cleft, 

 longer than the oblong acute scale ; stigmas elongated. — Banks of the Apala- 

 chicola River, Florida, to the mountains of Georgia, and westward. — Plan* 

 whitish. Culms l°-2° high, smooth, like the linear leaves. 



