416 CYPERACE^E. 



Wet grounds. Can. to Del. W. to Ohio. May. 1\.. Culm a foot high, 

 erect or somewhat decumbent. Leaves subglaucous. Round-fruited Sedge. 



87. C. laxijlora Lam. : sterile spike solitary, subsessile ; fertile spikes 

 mostly 3, rather loose, remote, pedunculate, erect ; perigynium ovoid-oblong, 

 ventricose, obtuse, somewhat shining, longer than the ovate cuspidate 

 scale. 



Moist woods. Can. to Geor. May. 9| Culm 12 18 inches high, erect, 

 smooth. Leaves deep green, longer than the culm. Loose-jloivered Sedge, 



88. C. conoidea Schk. : sterile spike pedunculate ; fertile spikes 2 3, ob- 

 long, remote, rather loose, uppermost sessile, the lower on a long peduncle ; 

 perigynium oblong-conic, obtuse, smooth, nerved, subdiverging, entire at the 

 orifice, as long as the ovate subulate scale. C. granular aides Schw. 



Moist woods. Can. to Car. May. Culm 6 12 inches high, angles sca- 

 brous. Leaves shorter than the culm, bright green. Conical-fruited Sedge. 



89. C. telanica Schk. : sterile spike long-pedunculate ; fertile spikes 2 3, 

 obi ong-cylind ric, loose, the lowest on a long peduncle; perigynium obovoid, 

 smooth, nerved, recurved and entire at the apex, shorter than the ovate 

 acute or mucronate scale. 



Wet meadows. Can. to Car. ; rare. May. %. Culm 6 10 inches high, 

 slender, erect. Leaves linear- lanceolate, about as long as the culm, light green. 



Crooked-necked Sedge. 



90. C. oligocarpa Sclik. : sterile spike solitary, pedunculate ; fertile spikes 

 23, erect, 3 4-fiowered, on exserted peduncles ; perigynium roundish- 

 triangular, short-rostrate, longer than the ovate mucronate scale. 



Rocky woods. Hudson's Bay to Penn. W. to Ken. May. '2|. Culm 

 6 12 inches high, erect. Leaves longer than the culm, dark green. C. Hitch- 

 cockiana Dew. is a taller variety, with the culm and leaves minutely pubescent. 

 Torr. Few-fruited Sedge. 



9lT C. digitalis Willd. : sterile spike solitary ; fertile spikes mostly 3. 

 few-flowered and loose, remote, slender, on long and somewhat cernuous 

 peduncles ; perigynium oblong, triangular, nerved, smooth, short-rostrate, 

 entire at the orifice, longer than the ovate mucronate scale. C. retrocurra 

 Dew. ? 



Rocky woods. Mass, and N. Y. j rare. May. Q. Culm 6 15 inches 

 high, slender, sharply triangular. Leaves mostly narrow, (sometimes very 

 wide,) light green and subglaucous. Slender Wood Sedge. 



92. C. anccps Muhl. : sterile spike solitary, pedunculate ; fertile spikes 

 mostly 3, remote, subcylindric, loosely flowered, lower ones pedunculate ; 

 perigynium oval, triangular, acute, striate, recurved at the apex, nearly en- 

 tire at the orifice, about as long as the ovate cuspidate scale. C. planta- 

 ginea Muhl. 



Woods. Can. to Car. . May. %.. Culm 918 inches high, somewhat 2- 

 edged above. Leaves very variable ; the radical ones sometimes nearly an inch 

 wide ; those of the culm much narrower. Two-edged Sedge. 



93. C. blanda Dew. : sterile spike solitary, triangular ; fertile spikes 2 4, 

 oblong-cylindric, sparse-flowered, the lowest on a long 2-edged peduncle ; 

 perigynium ovoid, somewhat triangular, nerved, recurved and entire at the 

 apex, a little longer than the ovate mucronate scale. C. conoidea Muhl. 



