CYPERACE^E. 413 



nerved, divaricately bifid at the summit, a little longer than the lanceolate 

 awned scale. 



Swamps. Can. to Geor. June. 7J.. Culm 2 3 feet high, thick, rough on 

 the angles. Leaves broad, rough. Cyperus-like Sedge. 



66. C. longirostris Torr. : sterile spikes mostly 3, short ; fertile 2 3, 

 cylindric, loose, at length pendulous, long-pedunculate, rather distant ; peri- 

 gynium globose-ovoid, smooth, with a very long beak, bifid, a little longef 

 than the lanceolate scale. 



Shady places. N. Eng. and N. Y. W. to Mich. Gray. June. l^.Culm 

 about 2 feet high, slender, nearly smooth. Leaves bright green and shining. 



Long-beaked Sedge. 



67. C. trichocarpa Muhl. : sterile spikes 24 ; fertile 23, distant, pe- 

 dunculate, erect, oblong-cylindric ; perigynium ovoid-conic, acuminate, bi- 

 cuspidate, pubescent, longer than the ovate acuminate scale. 



Swamps. Can. to Geor. June. 1J-. Culm 2 feet high, rough above. 

 Leaves and sheaths pubescent. Hairy-fruited Sedge. 



68. C. aristata Brown : sterile spikes 2 4 ; fertile 2 4, distant, close- 

 flowered, erect ; perigynium ovoid-oblong, somewhat inflated, smooth, long- 

 rostrate, many-nerved, deeply bifid, longer than the oblong awned scale. C. 

 mirata Dew. 



Watertown, Jefferson County, N. Y. British Amer. ; rare. Torr. Culm 

 2 3 feet high, smooth, leafy. Leaves on the under side, and the sheaths pubes- 

 cent. Closely allied to the preceding. Awned Sedge. 



j~j* Perigynium vittous, not inflated. 



69. C. umbellata Schk. : cespitose ; sterile spike short, erect ; fertile spikes 

 mostly 4, ovoid, few-flowered ; one sessile at the summit of the culm ; the 

 rest on radical peduncles, subumbellate ; perigynium ovoid, acuminate, ros- 

 trate, subpubescent, as long as the ovate acuminate scale. 



Rocky grounds. N. Eng. IN. Y. and Penn. May. 1\.. Culms in dense 

 tufts, 16 inches high. Leaves radical, narrow, rough, longer than the culm. 



Umbelled Sedge. 



70. C. varia Muhl. : sterile spike erect, sessile or on a short peduncle ; 

 fertile spikes 2 3, ovoid, sessile, approximate, few-flowered ; perigynium 

 ovoid or subglobose, acuminate-rostrate, bifid, obtusely triangular, hispidly 

 pubescent, as long as the ovate acuminate scale. C. Emmonsii and col- 

 lecta Dew. 



Dry woods. Hudson's Bay to Geor. April. 1\-. Culm 8 12 inches high, 

 erect, filiform. Leaves pale green. Torrey considers it a variety of the next. 



Variable Sedge. 



71. C. Pennsylvanica Lam.: sterile spike erect, pedunculate, somewhat 

 triangular ; fertile spikes 1 3, ovoid, subsessile, subapproximate, few-flow- 

 ered ; perigynium ovoid-globose, short-rostrate, bifid, about as long as the 

 ovate mucronate or acuminate scale. C. marginata Muhl. 



Dry woods. Can. to Car. ; common. April. r ^-. Culms growing in tufts, 

 4 12 inches high, slender, rough above. Leaves short, somewhat glaucous. 



Pennsylvanian Sedge. 



72. C. NovcB^AnglifB Schw. : sterile spike on a short peduncle ; fertile 

 spikes 2 3, sessile, ovoid, few-flowered, rather remote ; perigynium oblong- 



