CYPERACE^. (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^ 

 periug into a spreading rough-angled mostly eniargiuate 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 commonh^ 3, remote, very slender, loosely 5-8-flowered, all on long 

 bri.stle-like peduncles, the lowest near the base of the culm and generally re- 

 clining ; perigynia 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. 



I t Bracts sheathing, leafless (xr nearlij so: scales brown or black. 



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

 the base of tlie 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 tlie 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 sheatlis of the short bracts ; tlie lowest near the base of the culm ; 

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

 brown .scale. — Table Mountain, South Carolina { Buckie i/}. — Kadical leaves 

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



= ^ Perigynia icitli few and scattered nerves, commnnhj a little in flated, straight- 

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

 duncles : bracts leafy. 



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



62. C. venusta, Dew. Fertile spikes 3 -5, linear (I'-H' 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 ; slieaths 



