CYfKRACE^. 



421 



mon— much resembles the preceding-, but larger in all its parts, and readily 

 distinguished by its different aspect and its deep reddish brown scales. 



63. C. Emmonsii. DeiD. 



Staminate spike sessile, short; pistillate 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 ovale glume ; stem decumbent G — 10 inches higli, leafy at the base, 

 pale ash-green. On dry fields and hills; common. 



64. C. Nov-c-ANGLi.E. Sclav. 



Staminate spike short, slender, oblong ; pistillate spikbs 2 — 3, ovate, alter- 

 nate, sessile, remotish, few-flowered, bracteate ; perig. 3— C, oval-triquetrous, 

 rostrate, costate, slightly pubescent, a little longer than the ovate, mucronate 

 glume ; stem 4 — S inches high, slender, subdecumbent, longer than the leaves. 

 Pale green. Open woods in high grounds. 



/3. collecta {D. C. coliecta. Dew.) ; stem 10 — IG inches high, very slender, 

 erect; pistillate spikes 2— 4, lower short pedunculate ; 7»er«o-. more tapering 

 into a beak, slightly bidentate. High lands of Mass. ; not abundant. 



Go. C. UMBELLATA. Sclik. 



Staminate spike short, erect; pistillate spikes several, each on its radical 

 peduncle, ovate, subumbellate ; perig. ovate or globose, 5 — 8, acutish at either 

 end, rostrate, short-bidenlate, pubescent, equaling the ovate lanceolate glume ; 

 stem ^ — 4 inches high, with very long leaves. 



/3. vicina (Dewcij) ; \ or '2 pistillate spikes close to the staminate, sessile ; 

 the other pistillate spikes on their own stems or radical peduncles. In small 

 tufts on dry hills. Both varieties grow on the same root, but Schk. saw and 

 fio-ured only the first. 



CG. C. pejECOx. Jacg. 



Staminole spike erect, subclavate ; pistillate spikes 1 — 3, ovale, bracteate, 

 approximate^ lower one short-pedunculate; ptrig. G — 12, ovate and subglo- 

 bose, triquetrous, pubescent, short-rostrate, equal to the ovate, acute, or 

 mucronate elume ; stem 2 — G inches higli, leafy at the base. On rocky hills, 

 Salem, Mass. Pickering ; Ipswich, Mass. Oukes. 



2. Pistillate Si'Ikes with xearlt ixcloseb pedu.\'cli:s. 



67. C. VESTl'TA. Willd. 



Staminate spike single, rarely 2, cylindric, oblong ; pistillate spikes 2, ovale- 

 oblono-, sessile, subapproximale, bracteate, often with stamens above ; perig. 

 ovale, oblong, subtriquetrous, nerved, sliorl- rostrate, bifid, pubescent, a little 

 lono-er than "the ovate-oblong, acutish, submucronale gluuie ; stem IS — 30 

 inches hi!Tli, acutely triangular and leafy below. Common in wet places over 

 the country. 



68. C. pube'scens. Muh. 



Fistilliite spikes 2 — 3, oblong, rather loose-flowered, erect, bracteate, the 

 lowest pedunculate ; per^V. ovate-triouetrous, rostrate, nearly entire at moutli, 

 pubescent, a little loiiuer than the ovate-oblong, carinate, mucronate gUiine ; 

 stem 10 — 20 inches high, and with the leaves, pubescent. Moist woods and 

 meadows ; common. 



G9. C. FLAVA. L. 



Pistillate spikes 2 — 4, ovate-oblong, approximate, sometimes androgynous ; 

 perig. ovate, closely imbricate, costate, bidentale, rcflexed with a long curved 

 beak, longer than the ovate-lanceolate glume; stem 10 — 20 inches high, 

 rather obtusely angled or triquetrous, glabrous ; yellowish green. Wet and 

 cold soils ; common. 

 70. C. vE'dekf. Ehrhnrt. 



Spikes sometimes androgynous; pistillate about 4, clustered, nearly sessile, 

 short-oblong, sometimes staminate above or below, bracteate ; pnrig. rather 

 LL 



