CYPEKACEJS. (SEDGE FAMILY.) 569 



57. C. styloflexa, Buckley. Sterile spike short-peduncled ; fertile 

 spikes 3, oblong, few-flowered, very remote, the lowest on a long and mostly 

 nodding peduncle ; perigynia lanceolate or oblong, narrowed at the base, ta- 

 pering into a spreading rough-angled mostly emargiuate beak, longer than 

 the oblong mucronate scale. Shady swamps, Middle Florida, to the moun- 

 tains of North Carolina. Culms filiform, 1 - 1| high, and, like the sheaths 

 of the linear leaves, roughened downward. 



58. C. digitalis, Willd. Sterile spike small, sessile, or nearly so ; fer- 

 tile spikes commonly 3, remote, very slender, loosely 5 - 8-flowered, all on long 

 bristle-like peduncles, the lowest near the base of the culm and generally re- 

 clining; perigyuia alternate, ovoid, with a short and spreading entire point, 

 twice the length of the ovate acute green-keeled scale ; leaves linear, green ; 

 culms 6' -12' high. Low ground, common. 



59. C. ptychocarpa, Steudl. Sterile spike very small, nearly sessile, 

 the fertile mostly 3, closely 6 - 8-flowered, the two upper approximate, nearly 

 sessile, much shorter than the broad foliaceous bracts; the lowest distant, 

 long-peduncled, erect ; perigynia nearly thrice the length of the ovate obtuse 

 or barely pointed white scale. (C. digitalis, var., Flora.) Wet shaded 

 banks, Middle Florida. Culms 3' - 5' high, much shorter than the broadly 

 linear glaucous leaves. 



J J Bracts sheathing, leafless or marly so : scales brown or black. 



60. C. plantaginea, Lam. Fertile spikes 3-4, remote, the lowest at 

 the base of the culm, linear, erect, loosely few-flowered, the peduncles mostly 

 included in the brown leafless sheaths ; perigynia oblong-obovate, short-pointed, 

 longer than the ovate acute black scale. Mountains of North Carolina, and 

 northward. Leaves all radical, 1' or more wide, about as long as the slender 

 culm. 



61. C. Caroliniana, Buckley. Fertile spikes 3, loosely 3 - 6-flowered, 

 remote, all on long bristle-like drooping peduncles, which are partly included 

 in the sheaths of the short bracts; the lowest near the base of the culm; 

 perigynia ovoid, short-pointed, rather longer than the oblong mucronate dark 

 brown scale. Table Mountain, South Carolina (Buckley). Radical leaves 

 4" - 6" wide, 3-nerved, exceeding the tufted culms. 



= = Perigynia with few and scattered nerves, commonly a little inflated, straight- 

 beaked or pointed: spikes all, or the lowest, on long and mostly nodding pe- 

 duncles : bracts leafy. 



t Spikes linear or Jiliform, loosely flowered : perigynia lanceolate or oblong. 



62. C. venusta, Dew. Fertile spikes 3-5, linear (!' - 1|' long), remote, 

 or the two upper ones approximate and erect ; perigynia oblong, acute at each 

 end, rough-hairy, notched at the orifice, twice as long as the oblong obtuse 

 scale. Low banks of streams, Florida to North Carolina. Culms 2 -3 

 high. Sheaths of the linear leaves very rough. 



63. C. debilis, Michx. Fertile spikes 3 -5, remote, filiform, drooping; 

 perigynia alternate, lanceolate, smooth, acute at the base, tapering into 

 a 2-cleft beak, twice as long as the oblong obtuse 1 -nerved scale; sheaths 



