412 CYPERACE^. 



Swamps. ITudsoirrf Bay to Geor. June, July. %. — Cidm 2 — 3 feet high, 

 very thick, triangular, f^niooth. Leaves Ipnger tlian the culm, bright green. 

 Var. 1. is found in l\unam County, N. Y. ; var. 2. in Chester County, Penn., 

 and on the shores of lake Erie. Hop-like Sedge. 



59. C. scabrata Schw. : fertile spikes about 5, rather remote, cylindric, 

 nearly erect ; lower ones long-pedunculate ; perigynium ovoid, acuminate- 

 rostrate, subventricose, scabrous, orifice oblique and somewhat bifid, longer 

 than the ovate-lanceolate ciliate scale. 



Swamps. N. H. to Penn. May. 1\.. — Culm 18 inches high, rather slender, 

 triangular. Leaves long, very rough, dark green. Rough Sedge. 



60. C. Schweinitzii Dew. : sterile spikes 2, the' lower one often pistillate 

 at the base ; fertile abc^jut 3, oblong-cylindric, somewhat pendulous, loose- 

 flowered, rather remote, lowest often long-pedunculate ; perigynium oblong- 

 ovoid, inflated, rostrate, bicuspidate, longer than the lanceolate-subulate 

 scale. 



Wet sandy soils. N. Eng. N. Y. and N. J. June. — Culm about a foot high, 

 rough above, very leafy. Leaves taller than the culm, yellowish-^reen. 



Schweiniz's Sedge. 



61. C. retrorsa Schw. : sterile spikes ahout .3, lower one often fertile at 

 the base ; fertile about 5, oblong-cylindric, approximate, dense-flowered, the 

 lowest often remote and long-pedunculate ; perigynium ovoid, inflated, rc- 

 flexed, rostrate, bicuspidate, much longer than the lanceolate scale. 



Near ponds. N. Eng. and N. Y. May.— CuZm 2 feet high, slightly rough on 

 the edges. Fertile spikes tliick. Retrorse Sedge. 



62. C. tentaculata Muhl. : sterile spike solitary ; fertile spikes 2 — 3, ovoid 

 or ovoid-cylindric, hracteate, mostly approximate, spreading, the peduncles 

 included ; perigynia crowded, ovoid, ventricose, very long-rostrate, 2- 

 toothed at the apex, longer than the lanceolate-subulate scale. 



Wet meadows. Can. to Geor. May. 71-.— CiJm 12— 18 inches high, trian- 

 gular, rough on the angles. Leaves longer than the culm, bright green. 



Long-pointed Sedge. 



63. C. rostraia Mich. : sterile spike short and small ; fertile spikes 2 — 3, 

 subglobose or capitate, bracteate ; perigynia crowded, erect, or diverging, 

 very loncr-rostrate, oblong-conic, slightly inflated, twice as long as the ovate- 

 oblong acutish scale. 



Can. Mich. Base of the White Mountains, N. H. Oakes. %.—Culm 

 8—16 inches high, erect, stiff, few-leaved. Plant pale yellow. 



Beaked Sedge. 



64. C. hystericina Willd. : sterile spike solitary ; fertile spikes 2 — i, thick, 

 at length cernuous, upper one nearly included, the rest on exsert peduncles ; 

 perigynium ovoid, inflated, spreading, many-nerved, rostrate, bifid, twice as 

 long as the oblong awned scale. 



Wet grounds. Can. to Geor. W. to Ohio. July, Aug. %.—Cuhn 1-.2 feet 

 high, triangular, rough above. Leaves long, linear-lanceolate, yellowish-green. 



Porcupine Sedge. 



65. C. Pseudo-Cyperus Linn. : sterile spike solitary, long and slender; 

 fertile spikes 2—5, cylindric, thick, pendulous, pedunculate, upper ones 

 somewhat geminate ; perigynium ovoid-lanceolate, rostrate, reflexed, many- 



