572 CTPERACEvE. (SEDGE FAMILY.) 



4-6, subulate, smooth, reflexed, the rigid teeth reflexed and appressec 1 to the 

 slender beak, four times as long as the awn-pointed scale. Deep swamps, 

 Georgia to North Carolina. Culms smooth, filiform, l-lihigh, longer 

 than the linear leaves. 



++ ++ Sterile spike single: style deciduous, straight or near!// so: fertile spikes 



few-flowered. 



77. C. folliculata, L., var. australis, Bailey. Fertile spikes 3-4, 

 ovoid, remote, 8-10-flowered, on erect peduncles, sterile at the summit ; peri- 

 gynia (6" long) horizontal, lanceolate, tapering into a smooth beak, with erect 

 hispid teeth, one third longer than the lanceolate rough-pointed scale Wet 

 margins of streams, Florida to North Carolina. Culms smooth, 2 high, 

 commonly exceeding the linear flat leaves. 



78. C. turgescens, Torr. Fertile spikes 2, near or remote, on short 

 included peduncles, ovoid, 8 - 12-flowered ; perigynia erect-spreading (4" long), 

 lance-ovate, strongly nerved, tapering into a smooth 2-cleft beak, with hispid 

 erect teeth, twice as long" as the ovate obtuse scale. Pine barren swamps, 

 Florida to North Carolina Culms smooth, 2 -3 high, longer than the nar- 

 row rigid and channelled leaves. 



79. C. Elliottii, Schw. & Torr. Fertile spikes mostly 3, approximate 

 and nearly sessile, or the lowest remote and long-peduncled, globose, 8-16- 

 flowered, sterile at the apex ; perigynia small (3" long), oblong-ovate, com- 

 pressed, spreading, few-nerved, tapering into a short smooth beak, with erect 

 hispid teeth, twice as long as the ovate obtuse scale. Boggy margins of 

 pine barren streams, Florida to North Carolina. Culms l-2high, rough 

 above, longer than the narrowly linear leaves. 



80. C. intumescens, Rudge. Fertile spikes 2-4, approximate, the 

 upper sessile, the lower peduncled, globose, 10- 15-flowered ; perigynia large 

 (6" long), spreading, tapering from a rounded and greatly inflated base into 

 a short and smooth 2-cleft beak with hispid teeth, twice as long as the ovate 

 acuminate scale. Shady swamps, Florida, and northward. Culms 1-H 

 hi"-h, rough above, shorter than the broadly linear deep green leaves and 

 bracts. 



81. C. Grayii, Carey. Fertile spikes 2, globose, closely 15 - 30-flowered ; 

 perigynia sparsely pubescent (in ours), reflexed; culms tall (2 -3 high); 

 otherwise like the last. Swamps near Rome, Georgia, and northward. 



++.+* Sterile spikes 2 or more: fertile spikes many-flowered. 

 = Periij ynia pubescent. 



82. C. trichocarpa, Muhl. Sterile spikes about three, linear, long- 

 peduncled ; fertile spikes 2, cylindrical, on short and mostly included pedun- 

 cles; perigynia thin, rough-hairy, tapering from a rounded ovate base into a 

 rather slender rough beak, with long acute teeth, longer than the oblong acute 

 awnless scale. Deep marshes, Georgia, and northward. Culms 2 - 3 high, 

 rough above. Leaves linear, elongated. 



83. C. Striata, Michx. Sterile spikes 2-4, long-peduncled; fertile 

 spikes 1-4 (mostly 2), remote, sessile, or the lowest long-peduncled. oblong 

 or cylindrical ; perigynia thick, ovate, pubescent above the middle, contracted 



