570 CYPERACE.E. (SEDGE FAMILY.) 



smooth. Swamps and low grounds, common. Culms very slender, l-2 

 high. 



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

 the sterile one filiform, the fertile loosely flowered, somewhat remote, the low- 

 est on an exserted peduncle ; perigynia 3-augled, spindle-shaped, rough at the 

 apex, with the orifice entire ; scales ovate, obtuse, and longer than the peri- 

 gyuia, or lanceolate, mucronate, and about equalling them." Boott. Sum- 

 mit of Roan Mountain, North Carolina. Leaves somewhat bristle-form, 

 shorter than the culm. 



t t Spikes cylindrical or oblong, densely many-flowered: perigynia ovate or 



roundish. 



65. 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 nerves, tapering into a 2-cleft beak, longer than 

 the oblong acute brownish scale. Shady swamps, South Carolina and Ten- 

 nessee. Culms (1-1| high) and broadly linear thin leaves very rough. 

 Bracts leaf-like, destitute of sheaths. 



66. C. Barrattii, Torr. 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, emargiuate or entire at the orifice, longer than the oblong obtuse 

 or pointed black scale. Marshes, North Carolina (Curtis), and north- 

 ward. Culms l-2 high, rough-angled, longer than the rigid glaucous 

 leaves. 



67. C. verrucosa, Muhl. Sterile spikes 1- 3, sessile or short-peduncled, 

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

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

 drooping ; perigynia glaucous, globose-obovate, 3-angled, strongly nerved or 

 nerveless, abruptly contracted into a short and entire point, about as long as 

 the brown rongh-awned scale. Margins of ponds and rivers, Florida to 

 North Carolina. Culms 2 -4 high. Leaves glaucous, setaceously attenuate. 



68. 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 summit, all on long and nodding peduncles ; perigynia whitish, ob- 

 long, compressed-3-angled, short-beaked, with the orifice membranaceous and 

 obliquely 2-cleft, longer than the oblong acute scale; stigmas elongated. 

 Banks of the Apalachicola River, Florida, to the mountains of Georgia, and 

 westward. Plant whitish. Culms l-2 high, smooth, like the linear 

 leaves. 



69. C. microdonta, Torr. & Hook. " Staminate spikes 3 ; fertile spikes 

 about 4, exsertly pedunculate, erect, cylindrical, attenuate, and more or less 

 stamiuiferous at the summit ; fruit ovate, compressed, obscurely striate, 

 acute, with a minutely bidentate orifice, scarcely exceeding tlie broadly ovate 

 acuminate, somewhat cuspidate scale." Torrey. Mississippi (Bailey), and 

 westward. 



