ORDER 154. CYPERACE^E. 377 



mote, recurved; perigynia 410, ovoid-triquetrous, obtuse, longer than the lance- 

 ovate glume ; leaves and bracts 12" wide, exceeding the 412' culm. Open woods. 



113 C. xantliosperma Dew. $ Spike small, sessile; ? spikes 4, distant, cylin- 

 dric, 1', dense, on long slender peduncles; perigynia oval-oblong, obtuse, 2", 

 striate, yellowish when ripe ; glumes 1", pointed. Yellowish, If. N. J., and South. 



1 1 4 C. conoidea Schk. Spikes all short-peduncled, ? 2 or 3, oblong, dense, erect, 

 610" ; perigynia oblong-conic, obtusish ; glumes ovate, awned. If. Uplands : com. 



115 C. grisea Wahl. $ Spike sessile; ? spikes 4, oblong, remote, 6"; perigynia 

 oblong, some longer than the ovate, awned glumes (3|", glumes 2") ; leaves light- 

 green, 23" broad. Culm l|f. Woods and meadows. 



1 1 6 . glaucodea Tuckm. Spikes short-stalked, 6 12", t clavate, ? 34, cylin- 

 clric,, dense ; perigynia 10 20, ovoid, obtuse, twice longer than the cuspidate glumes. 

 Plant glaucous, 6 10 7 ; leaves 2 4" wide. Mass, to Pa. 



117 C. grauularls Muhl. Spike linear, sessile, 1'; 9 24, cylindric, i If, the 

 lower peduncle long; perigyuia close, round-ovate, the point oblique, much longer 

 than the ovate-acuminate glumes. Glaucous, 8 20 / . Moist soils : common. 



/3. recta^ has the perigynia ovoid, and with a straight point. 111. to La. 

 1 1 8 C. juiicea Willd. Spikes slender, on filiform stalks, glumes obtuse; $ short; 

 $ spikes 2 3, loose ; perigynia lanceolate, longer than the glumes ; culm 1 l|f, 

 slender, longer than the slender rush-like leaves. Roan Mt., N. C. 



1 19 C. eburnea Boott. Delicate, erect, 410', the setaceous leaves much shorter ; 

 spikes 23, very small (23"), with white, leafless sheaths, the ? higher than the ; 

 perigynia 36, obovoid, beaked, nerveless, I", Rocks, Vt., and West. 



1 2O C. pauicea L. Spikes 24, 1', oblong-cylindric, stalked, tawny; perigynia 

 turgid-ovoid, the very short point oblique, longer than the obtuse glume.. Light 

 green. If; bracts short. Mass. (Oakes). Wis. (Lapham). Pa. (Porter). 



121 C. livlda Willd. Spikes 24, oblong-cylindric, pale, 810", the $ and lower ? 

 stalked; bracts short; perigynia oval, straight at the obtuse end, longer than the 

 obtuse glumes. Glaucous, 616'. Swamps, N. Y., N. J.. and North. 



122 C. tetanlca Schk. Spikes 24, oblong-cylindric, loose, I', the $ and lower 

 long-pedunculate; perigynia ovoid to cbovoid, apex oblique, longer than the sub- 

 mucronate glumes. Light green, 8 !(/; bracts rather short. Wet uplands: rare. 



/3. Wootfil, $ spikes about 2, very loose ; glumes with broad scarious margins. 



123 C. Meadii Dew. $ Spike slender, 1', $ oblong-cylindric, loose, 810", all 

 pedunculate; perigynia oval, scarce equaling the tawny-edged, ovate-acuminate 

 glumes. Pale, erect, 816', the leaves and bracts short. Wet, O. to 111., and North. 



124 C. Cra\vel Dew. Spikes dense, 810", erect, $ stalked, compound at base, 9 

 3 5. remote, the lowest often long-stalked; perigynia ovoid, acute, twice longer than 

 the ovate glumes. Erect, 6 15'. Spikes dusky green. N. Y., and West. Rare. 



12." C. oligocarpa Schk. j Spike erect, 9", linear, stalked; ? 3, remote, short- 

 stalked, 3- or 4-flowered ; perigynium obovoid, short-beaked, brown, equaling the n\vn 

 of the pale glume. Pale, 6 12', bracts long. Open woods and hedges : rare. 



12G C. Hltclicockiaiia Dew. $ Spike erect, linear, stalked ; $ 3, remote, short- 

 stalked, 5-10-flowered ; perigynia oval, brown, acute below, the beak bent back, scarce 

 equaling the awn of the whitish glume. Subpubescent, 1 2f. N. Eng.. and West. 



127 C. exteiisa Good. $ Spike subsessile, 6 9"; $ 3, oval to oblong, very dense, 

 the lower remote, stalked ; perigynia spreading, the short straight beak 2-tootheu, 

 gl. much shorter. Rush-like, 1 2f, leaves and bracts rolled. Sands, L. I., Staten I. 



128 C. debilis MX. Spikes about 2', very slender; ? 35, nodding; perigynia 

 1-2 20, lance-linear, acuminate-beaked, twice longer than the oblong silvery glume 1 ?. 

 Bright green, 1 2f ; bracts equal the culm. Moist woods and meadows : common. 



. * pubera. Peng, pubescent, strongly veined, slightly bent. Pa. (Porter), and S. 



129 C. arctata Boott. Like C. debilis, but with shorter bracts, longer steles, the 

 perigynium ovoid, taper-beaked, $ longer than the ovate-pointed glume. Common. 



130 C. SulliTautii Boott. Spikes cylindric, 915'', erect, 4 approximate, or a 5th, 



