542 CYPERACEiE. (SEDGE FAMILY.) 



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

 Yery slender, l°-2° high. 



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

 sterile one Hiilbrni, tlic fertile loosely-flowered, somewiiat remote, the lowest on 

 an exscrted jjeduncle ; peri<,'ynia 3-angled, spindle-shaped, rougli at the apex, 

 with the oriliee entire ; scales ovate, obtuse, and longer than the perigyiiia, or 

 lanceolate, mucronatc, and about equalling them." Boott. (C. miser, BncUey.) 



— Summit of Roan Mountain, North Carolina, BucUeij. — Leaves somewhat 

 bristle-form, shorter than the culm. 



tt Spikes cylindrical or oblong, densely many-Jlowered : perigynia ovate or roundish. 



55. C. seabrata, 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 swamj)s, North Carolina, and northward. 



— Culms (1°-1|° higli) and broadly linear thin leaves very rough. Bracts 

 leaf-like, destitute of sheaths. 



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

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

 perigynia yellowish, compressed-3-angled, round-elli|)tical, slightly roughened, 

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

 scale. — Marshes, Alabama to Nortli Carolina (C«>7/s), and northward. — Culms 

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



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

 spikes 4 - 10, cylindrical ( 1' - 2' long), all on long and drooping peduncles, mostly 

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

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

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

 awned scale. — Pine-barren ponds, Florida to Nortii Caiolina. — Culms 2° -4° 

 high, rough-angled above. Leaves glaucous, as long as the culms, bristfc-likc at 

 the summit. 



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

 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 sliort and entire point, aI)out as long as the biown rough- 

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

 Culms, leaves, and bracts as in the preceding. 



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

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

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

 3-anglcd, short-beaked, witli the orifice membrimaceous and obli(]uely 2-cleft, 

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

 rhicola River, Floriila, to the mountains of Georgia, and westward. — I'lant 

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



