378 ORDEK 154. CYPERACE.fi. 



if any, remote; perigynium elliptic, rough-hairy, scarcely longer than the ovate- cnept 

 date glnme. Borders of woods, Columbus, Ohio. 2f. 



131 C. Kneiskernil Dew. Spikes rather loose, 11^, with recurved peduncles' 

 perigynia ovate-oblong, glabrous, nerved. Otherwise as in C. Sullivantii. Woods, 

 Oriskany and Rome, N. Y., and Cleveland, O. 



132 C. vaglnata Tausch. t Spike nodding in flower, stalked; 8 2 or 3, remote, 

 loose ; bracts short with long sheaths ; perig. 510, brown-black, glob'jlar-ovate, the 

 beak terete, short, bent, exceeding the obtuse gl. Weak, 1 2f. N. Y. (rare), L. Sup. 



133 C. caplllaris L. Spikes minute, 3 4, oblong, tawny, peduncle capillary, 

 perigynia 46, oval, nerveless, the short beak exceeding the obtuse rusty glume 

 Pale, delicate, 4 7', leaves long, bracts short. White Mis., N. H. 



134 C. ilexllis Rudge. Spikes 3 5, t clavate, 9 oblong, on jlexile nodding pe- 

 duncles ; bracts bristle- or scale-form ; perigynia ovoid-lanceolate, 2-toothed, scarce 

 longer than the obtusish rusty glumes. Sofl-hairy. 1 l^f. Ct., N. Y. : rare. 



135 C. Ircvigata Sm. Like C. flexilis, but with peiigynia nerved, bicuspidate, the 

 glumes awn-pointed, and the whole plant smooth. Near Boston. 



136 C. 1'ulva Good. Culm If, rough; spikes 3 4, all erect. ovoid-oblong; perig. 

 ovoid, twice longer than the dark-brown acutish glumes. Near Boston. 



137 C. veiiusta Dew. Spikes 3 or 4, $ linear, 1' 16", rusty, stalked; 9 loose, 

 6 16", brown-green ; perigynia lance-oblong, 2J", conic-beaked, nerved, rough- 

 hairy, twice longer than the glumes ; leaves If, culm 2 3f. S. Car. to Fla. 



138 C. teuax Chapm. Spikes 2 4, a slender, 1', 9 oblong, $ 1', dense, subsessile; 

 bracts longer; perigynia oval, short-beaked, finely-veined, pubescent, twice longer 

 than the ovate glumes ; culm If; leaves rolled. Oa., Fla. 



130 C. da.sycu.rpa Muhl. Spikes 3 4, subsessile, 10", t linear, 9 oblong, 

 hoary, bracts exserted; perigynia obiong-ovate, tomentous, short-beaked, longer than 

 the ovate-acuminate glumes. If. Dry fields, South. 



140 C. Tdrreyl Tuckm. Spikes subsessile, erect, the & oblong, the 9 ovoid, 2 or 3; 

 perigynia obovoid, very obtuse, scarcely beaked, strongly nerved, longer than the 

 ovate glumes ; culm, leaves, and short bracts downy. Penn., and North. Rare. 



141 C. Hurra ttil Schw. & Torr. Spikes cylindric. 612", dark-purple, short-pe- 

 dunculate, the ? 2 or 3 ; perigynium ovoid, little exceeding the ovate glume ; culm 1 21, 

 t-harp-angled, leaves much shorter, bracis short. Marshes, N. J. to Car. 



1.42 C. pallesceiis L. Spikes approximate, 3 or 4, short-stalked, pale, t oblong, 6"; 

 9 ovoid, 4 5", bract a little exserted ; perigyuia ovoid, nerveless, scarce longer 

 than the glumes. Plant pale, 6 15', leaves as long. Dry meadows. 

 ft. undulala. Lower bracts wary-rugous at base ; leaves longer. 



143 C. liniosa L. Spikes pedunculate, with. dark-purple glumes, $ linear, erect ; * 

 1 2, oblong, drooping ; bracts shorter than the culm ; perigyuia ovate, scarce equal- 

 ing the broad, mucrouate glumes. Glaucous, 8 16'. Marshes: common. 



144 C. rariflora Sm. Like C. limosa, but smaller (4 !0'), 9 spikes 12. linear, 

 loosely 5-10-flwd. ; perig. involved in the glume. Mountains, N. H., Me., and N. 



145 C. irrigua Sm. 9 Spk. 2^1, ovoid-oblong ; bract exceeding the culm; perig. 

 oval, much shorter than the long-pointed dark-purple glume, 820'. Leaves linear, 

 fiat. Spikes drooping as in C. limosa. Bogs, Pa. to Wis., and N. 



146 . lulliaeea Muhl. Spikes cylindric, slender, It 2'. S erect, 9 nodding, loose 

 below; perig. ovoid-triquetrous, short-beaked, as long as the white-edgod awiied 

 glume. Culm 1 2f, leaves rather broad. Wet meadows : common. 



147 C. scabrata Schw. Spikes 36, cjlindric, 1J 2', suberect, dense, the lower on 

 long peduncles; bracts long; perig. ovoid-triquetrous, rough, the slender beak equal- 

 ing the acuminate glume. Culm 1 2f, leaves broad. Swamps, Cau. to Car. 



148 C. lystrlcina Willd. t Spk. linear, stalked, 1', 9 3, oblong-cyiindric, dense, 

 12 18", near, nodding ; perig. ovoid, inflated, nerved, diverging, the long eleudof 

 beak bifid, longer than the awned gluine. 1 2f, very leafy. Swales: common 



0. Cooleyl. Slender; 9 spikes ovoid, the lowest long-pedunculate. 



