CAREX. CLX. CYPERACE^E. 585 



68. C. PENNSYLVANIA. Lam. (C. marginata. Muhl.) 



$ Spike erect, pedunculate, subtriquetrous, with an obtuse glume; 9 

 spikes 1 3, ovate, subsessile, subapproximate, few-flowered; perig. ovate-glo- 

 bose, tomentose, short-rostrate, slightly 2-toothed, about equal to the ovate- 

 acuminate, or oblong-acuminate, deep reddish glume ; st. 4 12' high, erect, 

 stiff, with short leaves. Open woods and hedges, common much resembles 

 the preceding, but larger in all its parts, and readily distinguished by its differ- 

 ent aspect and its deep reddish-brown scales. 



69. C. EMMONSII. Dew. 



tf Spike sessile, short ; 9 spikes 2 3, approximate, sessile, few-flowered, 

 often one long radical peduncle ; perig. globose-triquetrous, attenuated at the 

 base, rostrate, pubescent, at the orifice oblique, about equal to the ovate glume ; 

 st. decumbent, 6 10' high, leafy at the base, pale ash-green. On dry fields 

 and hills ; common. 



70. C. NOVJE-ANGLI.K. Schw. 



<? Spike short, slender, oblong ; spikes 2 3, ovate, alternate, sessile, 

 remotish, few-flowered, bracteate ; peng. 3 6, oval-triquetrous, rostrate, cos- 

 tate, slightly pubescent, a little longer than the ovate, mucronate glume ; st. 

 4 8' high, slender, subdecumbent, longer than the leaves. Pale green. Open 

 woods in high grounds. 



/?. collecta. Dew. (C. collecta. Dew.} St. 10 16' high, very slender erect; 

 Q spikes 2 4, lower short-pedunculate ; perig. more tapering into a beak, 

 slightly bidentate. High lands of Mass. ; not abundant. 



71. C. UMBELLATA. Schk. 



J* Spike short, erect ; 9 spikes several, each on its radical peduncle, ovate, 

 subumbellate ; perig. ovate or globose, 5 8, acutish at either end, rostrate, 

 short-bidentate, pubescent, equaling the ovate-lanceolate glume ; st. J 4' high, 

 with very long leaves. 



/?. vicina. Dew. 1 or 2 9 spikes close to the ^, sessile ; the other O spikes on 

 their own stems or radical peduncles. In small tufts on dry hills. Both varie- 

 ties grow on the same root, but Schk. saw and figured only the first. 



72. C. PRJECOX. Jacq. 



(? Spike erect, subclavate ; spikes 1 3, ovate, bracteate, approximate, 

 lower one short-pedunculate ; perig. 6 12, ovate and subglobose, triquetrous, 

 pubescent, short-rostrate, equal to the ovate, acute, or mucronate glume ; st. 

 26' high, leafy at the base. On rocky hills, Salem, Mass., Pickering, Ips- 

 wich, Mass., Oakes. 



2. Pistillate spikes with nearly inclosed peduncles. 



73. C. VESTITA. Willd. 



tf Spike single, rarely 2, cylindric, oblong ; 9 spikes 2, ovate-oblong, ses- 

 sile, subapproximate, bracteate, often with stamens above ; perig. ovate, oblong, 

 subtriquetrous, nerved, short-rostrate, bifid, pubescent, a little longer than the 

 ovate-oblong, acutish, submucronate glume ; st. 18 30' high, acutely triangu- 

 lar and leafy below. Common in wet places over the country. 



74. C. PUBESCENS. Muhl. 



9 Spikes 2 3, oblong, rather loose-flowered, erect, bracteate, the lowest 

 pedunculate ; perig. ovate-triquetrous, rostrate, nearly entire at mouth, pubes- 

 cent, a little longer than the ovate-oblong, carinate, mucrouate glume; st. 

 10 20' high, and with the leaves, pubescent. Moist woods and meadows ; 

 common. 



75. C. FLAVA. L. 



9 Spikes 2 4, ovate-oblong, approximate, sometimes androgynous ; perig. 

 ovate, closely imbricate, costate, bidentate, reflexed with a long, curved beak, 

 longer than the ovate-lanceolate glume; st. 10 20' high, rather obtusely 

 angled or triquetrous ; glabrous ; yellowish-green. Wet and cold soils ; com- 

 mon. 



76. C. LEPIDOCARPA. Taush. 



9 Spikes 1 3, short and round-ovate, often aggregated, sessile, dense- 

 flowered, the lowest sometimes remote and pedunculate; perig. ovate, trique- 



