. (SEDGE FAMILY.) 565 



29. C. Stenolepis, Torr. Spikes 4-7, the terminal one small, often 

 wholly sterile ur fertile, the others cylindrical, erect, dense-flowered, the upper 

 ones approximate and nearly sessile, the lower scattered, on exserted pednn 

 cles ; perigynia horizontal, contracted into a long and slender 2-cleft beak, 

 shorter than the awu-like scales. Swamps and meadows, upper districts ot 

 lieorgia, and westward. Culms 1- 1J high, flexuous above, shorter than 

 the broad leaves and bracts. 



-- -- Perigijnia beakless. 



M- Spikes approximate, ovoid or cylindrical, dense-flowered, sessile, or on short 

 and erect peduncles : bracts short. 



30. C. Buxbaumii, Wahl. Spikes 3-4, oblong, the upper one pedun- 

 cled, the others sessile or nearly so ; perigyuia whitish, smooth, elliptical, 

 cornpressed-3-angled, obtuse and ernargiuate at the apex, commonly shorter 

 than the ovate acute or awn-pointed blackish scale. Mountains of Georgia, 

 and northward. Culms 1- 1| high, rough above, longer than the narrow 

 glaucous leaves. 



31. C. triceps, Michx. Spikes 2-4 (mostly 3), sessile or nearly so, 

 ovoid or oblong, manv-flowered ; perigynia pubescent or at length smoothish, 

 ovate, compressed-3-angled, strongly nerved, obtuse and emarginate at the 

 apex, about as long as the oblong mucronate white scale. Damp soil, Florida, 

 and northward. Calms erect l-l- high, rough-angled, and, like the nar- 

 row leaves, and sheaths, more or less pubescent. 



32. C. Smithii, Porter. Spikes 3-4, ovoid or oblong, sessile, few-flow- 

 ered; perigynia smooth, round-pear-shaped, obscurely angled, faintly nerved, 

 contracted into a short and entire point, as long as the oblong obtuse or barely 

 pointed white scale Low ground, in the upper districts. Culms 1 high, 

 very slender. Leaves and sheaths smooth. 



33. C. virescens, Muhl. Spikes 2-3, cylindrical, short-peduucled, 

 densely many-flowered; perigynia small, pubescent, ovoid, strongly nerved, 

 3-angled, acute and entire at the apex, as long as the ovate mucronate white 

 scale. Low grassy meadows, North Carolina, and northward. Culms 1- 

 2 high, rough. Leaves and sheaths hairy. 



34. C. Shortiana, Dew. Spikes 4-5, approximate, erect, cylindrical, 

 densely many-flowered, the lower stalked, all staminate at the base ; perigyuia 

 round-obovate, nerveless, about the length of the thin ovate scale ; culms 

 rigidly erect, mostly shorter than the broadly linear leaves. Damp ground, 

 Tennessee, and northward. Culms 1 Q -3 high. Spikes 1' long. 



M- -M- Splices remote, linear or cylindrical, rather loosely flowered, on long and 

 mostly drooping peduncles : bracts long and leaf-like: perigynia smooth, some- 

 what inflated, few and faintly nerved. 



35. C. OXylepis, Torr. & Hook. Spikes 4-5, linear, all on long bristle- 

 like partly included nodding peduncles, distant ; perigynia oblong, acute- 

 angled, emarginate at the pointed apex, longer than the lanceolate rough- 

 pointed white scale. Low ground, Florida, and westward. Culms slender, 

 l -2 ? high, the lower part, like the leaves and sheaths, pubescent. 



