OKDKK 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. 



1 1 3 C. xantliosperma Dew. & Spike small, sessile ; 9 spikes 4, distant, cylln- 

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

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



114 C. coiioidea Schk. Spikes all short-pedunclecl, 9 2 or 3, oblong, dense, erect, 

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



115 C. arrisea Wahl. $ Spike sessile; 9 spikes 4, oblong, remote, 6"; perigynia 

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

 green, 23" broad. Culm Iff. Woods and meadows. 



116 C. glaucodea Tuckni. Spikes short-stalked, f 12", f clavate, 9 34, cylin- 

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

 Plant glaucous, 610'; leaves 24" wide. Mass, to Pa. 



117 C. grail ularis Muhl. S Spike linear, sessile, 1'; 9 24, cylindric, | 1J', the 

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

 than the ovate-acuminate glumes. Glaucous, 8 20 7 . Moist soils: common. 



ft. rtrta* has the perigynia ovoid, and with a straight point. 111. to LM. 



118 C. juncea Willd. Spikes slender, on filiform stalks, glumes obtuse; i short; 

 V spikes 23. loose; perigynia lanceolate, longer than the glumes; culm 1 IJf, 

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



119 C. eburiiea Boott. Delicate, erect, 4 10', the setaceous leaves much shorter; 

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

 nevigynia 36, obovoid, beaked, nerveless, J". Rocks. Vt.. and VVest. 



120 C. paiiicea. L. Spikes 2 4, 1', oblong-cyliiulric. 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 2 4, oblong-cylindric, pale. 8 10", the t and lower 9 

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

 obtuse glumes. Glaucous, (i 16'. Swamps, N. Y., N. J.. and North. 



122 C. te tt n tea Schk. Spikes 2 4, oblong-cylindric, loose, 1', rtie s and lower 9 

 long-pedunculate; perigynia ovoid to obovoid. apex oblique, longer than tne sub 

 mncronate giumee. Light green, 8 It;'; bracts rather short. Wet uplands: rare. 



fs. M~oot </, 9 spikes about 2, very loose; glumes with broad scarious margin* 



123 . JTIeadit Dew. f Spike slender, 1', 9 oblong-cylindric. loose. 810", ail 

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

 glumes. I'ale, erect, 8 16', the leaves and bracts short. Wet. O. to 111., and North. 



124 C. Crawel Dew. Spikes dense, 810", erect, $ stalked, compound at base, * 

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

 the ovate glumes Rrect. 015'. Spikes dusky green. N. Y., and West. Rare. 



125 C. oligooarpa Schk. S Spike erect, 9", linear, stalked ; 9 3, remote, short- 

 stalked, 3- or 4-flowered ; perigynium obovoid, sho^t-beaked ', brown, equaling the awn 

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



126 C. Hltclirockiaiia Dew. s Spike erect, linear, stalked; ? 8, remote, short- 

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

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



127 . exteiisa Good. I Spike subsessile, (> 9"; 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. dcliilis MX. Spikes about 2', very slender; 9 3 5, nodding; perigynia 

 I'-t 20, lance-linear, acuminate-beaked, twice longer than the oblong silvery glumes 

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



ft."! pliliera. Perig. pubescent, strongly veined, slightly bent. Pa. (Porter), and . 



129 C. arotata Boott. Like C. debilis. but with shorter bracts, longer stales, the 

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



ISO C. SulllTautii Boott. bpikes cylindric, 9 15", erect, 4 approximate, or a 6th 



