CYPERACE^E. 405 



on loug stalks ; bracts without sheaths; ]< rigyai-i ovoid, contracted at the base, 

 few nerved, rough with an oblique notched beak, longer than the OTate brown 

 6cale. 



Wet meadows and swamps. Culm IS inches high, and with the dark green leave* 

 and bracts very rough. 



12. C. debilis, Miclix. Weak Sedge. 



Sterile spikes solitary, occasionally fertile at the apex ; firtile spikes with loeso 

 altcraat;! flowers, on a somewhat sigzag rachis; perigynia oblong, tapering at each 

 end twice as long as the ovate-lanceolate awned scales. 



Hbj&t meadows. June. Culm I to 2" feet high, weak and slender, sometimes 

 procumbent, leafy. Leaves narrow. 



13.. C. oligocarpa, Schk. Fcw-f rutted Sedge. 



Sterile spike solitary, pedunculate ; fertile splices smn.ll, 3 to 8-Cowercd' ; style very 

 short, thickened towards the base ; pevigyniiMth roundish-triangular, with a slightly 

 oblique point. 



Woods. Culm G to 12 inches high, erect. Leaves longer than the culm, rough on 

 the edge, dark green. Sheaths smooth. 



14. C. PLANTAGINEA, Lam-. Plantain-like Sodge. 



Sterile spike solitary, pedunculate ; fertile spike:, mostly 4, oblong, 5 to 8-flowered ; 

 oVacts very short, dark purple or the lowest greenish at the apex; perigynia oblong, 

 acute at each end, recurved at the apex. 



Shady woods. Gulrn 8 to 20 inches high, erect. Leaves radical, broad, strongly 

 3-nervccL 



15. C. GRANULARIS, Mulil. Round-fruited Sedge. 



Sterile spike sessile, or short-stalked, occasionally bearing a few fertile flowers; 

 fertile spikes 3 or 4, cylindrical, densely Cowered, remote, the 2 lowest peduncled ; 

 pemgynia roundish-ovoid, nerved, minutely pointed ; brads longer than the culm. 



Vt'et meadows, common. C'ul:.-i lQtolSineheahigh, erector somewhat decumbent,. 



16. C. ANCEPS, WillJ. Pale Sedge. 



Sterile spike solitary, triangular; fertile spikes 2 to 4, slender, loosely flowered; 

 perigynia ovoid, narrowed at each end. Tar. 1. Striaxula has the spikes oblong, 

 more densely flowered, and the perigynia obovoid with a shorter point. (C. blanda, 

 Dew.) 



Open woods, common. Culm 6 to P2 inches high, triangular, leafy near the baee , 

 Leaves as long as the culm, pale-green and somewhat glaucous. 



17. C. BULLATA, Schk. Iujlaied Sedge. 



Sterile spikes 2 or 3; fertile spifees 1 or 2, mostly 1, approximated, oblong or cylin- 

 drical, stout, sessile or on short smooth stalks : perigynia spreading, ovoid, long- 

 beaked, twice as lon^ as the lanceolate scale- 

 Wet meadows-. Culm \}/ 2 to 2 x / 2 feet highj triangular, rough above, leafy. 

 Bracts and leaves narrow, about as long a3 the culm. 



18. C. HYSTEEICINA, Willd. Porcupine Serf-jc- 



Sterile spike solitary; fertile spikes 2, to 4, obloag-cylindrical,. densely flowered, 

 the uppermost nearly sessile, the lower on long stalks, at length nodding; perigynia 

 ovoid; inflated, spreading, many-nerved, beaked, twice as long as the oblong awned 

 scales. 



Wet meadows. A pale or yellowish-green plant, 1 to 2 feet high. Ltaves long,, 

 linear-laaeeoiate. Fbrtik spikes % to \% inch long. 



