378 ORDER 154. CYPERACE.E. 



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

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



131 C. Knelskernii Dew. Spikes rather loose, 1 If, with recurved peduncles; 

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

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



132 C. vaginala Tausch. $ Spike nodding in flower, stalked; 2 or 3, remote, 

 loese ; bracts short with long sheaths ; perig. 510, brown-black, globular-ovate, the 

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



133 C. capillaris L. Spikes minute, 34, oblong, tawny, peduncle capillary; 

 perigyuia 4 6, oval, nerveless, the short beak exceeding the obtuse rusty glume. 

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



134 C. flexilis Rudge. Spikes 35, $ clavate, $ oblong, on flexile nodding pe- 

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

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



135 C. laevigata Sm. Like C. flexilis, but with peiigynia nerved, bicuspiclate, the 

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



136 C. fulva Good. Culm If, rough; spikes 34, all erect., 9 ovoid-oblong; pcrig. 

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



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

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

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



138 C. tenax Chapm. Spikes 2 4, $ slender, 1', $ oblong, i 1', dense, subsessile; 

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

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



139 C. dasycarpa Muhl. Spikes 3 4, subsessile, 610", $ linear, 9 oblong, 

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

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



140 C Xorreyi Tuckm. Spikes eubsessile, erect, the $ oblong, the ? 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. Karrattii Schw. & Torr. Spikes cylindric, 612", dark-purple, short-pe- 

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

 sharp-angled, leaves much shorter, bracts short. Marshes, N. J. to Car. 



142 C. pallescens L. Spikes approximate, 3 or 4, short-stalked, pale, $ oblong, 6"; 

 ? ovoid, 4 5", bract a little exported; perigynia ovoid, nerveless, scarce longer 

 than the glumes. Plant pale, 615', leaves as long. Dry meadows. 



/3. vn^ulhta. Lower bracts wavy-rugous at base ; leaves longer. 



143 C. limosa L. Spikes pedunculate, with dark-purplo glumes, <$ linear, erect ; 9 

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

 ing the broad, mucronatc glumes. Glaucous, 816'. Marshes : common. 



144 C. rari flora Sm. Like C. limosa, but smaller (4 !0'j, 9 sp kes 1 2. linear, 

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



145 C. irrigua Sm. 3 Spk. 2 4, ovoid-oblong ; bract exceeding the culm; peri;,', 

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

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



146 C. miliacea Muhl. Spikes cylindric, slender, Ifr 2', $ erect, $ nodding, loose 

 below; peri;,', ovoid-triquetrous, short-beaked, as. long as the white-ed^-d awned 

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



147 C. scabriita Schw. Spikes 36, cjlindric, 1| 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, Can. to Car. 



148 C. liistriciiia Willd. t Spk. linear, stalked, 1', $ 3, oblong-cylindric, dense, 

 1-2-18", near, nodding; parig. ovoid, inflated, nerved, diverging, the long eleuder 

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



j3. Cooltyt. Slender; 9 spikes ovoid, the lowest long-pedunculate. 



