B44 cvricuACKiE. (skdgi: iamii.v.) 



SHliiilsito, smootli, nflcxxl, ihc ri^itl tci-th ivdcxcJ iunl appicsscd to llio sliiidor 

 beak, 4 times as louj^ as tliu uwii-|i(>iiiti.d scale. — Deep swamps, l-'aveltcville. 

 North Carolina {Cmiis), ami noitliwaid. — Culms siiioolli, lilil'oiin, 1*^-1^° 

 liigli, longer tliaii tlic linear lea\es. 



•«-» •* JSlcrilc sjtike siiiijlc: style deciduous, slranj/U or niaihj so: f rt He spikes JtW' 



Jiotreied. 



G7. C. folliculata, L. Fertile spikes 3-4, ovoid, remote, S-lO-flowcrcd, 

 on crcet peiluiieles, sterile at the summit ; peri^yiiia (6" lony) iiorizontal, laiuo- 

 olate, tapering into a smooth beak, with erect hispid teeth, one third lon<^er than 

 the lanceolate rough-pointed scale. — Wet margins of streams, Florida, and 

 northward. — Culms smooth, 2° high, commonly exceeding iiio linear and Hat 

 leaves. 



68. C. turgescens, Torr. Fertile spikes 2, near or remote, on short in- 

 cluded peduncles, ovoid, 8- 12-flowcred ; perigvnia erect-spreading (4" long), 

 lance-ovatc, strongly nerved, tapering into a smooth 2-eielt 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 narrow rigid 

 and channelled leaves. 



69. C. EUiottii, Sclnv. & Torr. Fertile spikes mostly 3, a|>proximatc and 

 nearly sessile, or the lowest remote and long-peiluneled, globose, 8- IG-llowered, 

 sterile at the apex ; pcrigynia small (3" long), oblong-ovate, compressed, spread- 

 ing, few-nerved, tapering into a short smooth beak, with erect hispid teeth, twice 

 as long as the ovate obtuse scale. (C Castanea, Ell.) — Boggy margins of pine- 

 barren streams, Florida to North Carolina. — Culms l°-2° high, rough above; 

 longer than the narrowly linear leaves. 



70. C. intumeseens, lludge. Fertile spikes 2-4, approximate, tlic up- 

 per sessile, the lower i)e(Uincled, globose, 10-1.5 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. (C. folliculata. Ell.) — Shady swamps, Florida, and northward. — Culms 

 lo_ jio high, rough above, shorter than the broadly linear dccp-grecn leaves and 

 bracts. 



*+*+*+ Sterile spilces 2 or more: fertile spiLe^ many-JloicfreJ. 

 =-■ Perifjijiua pubescent. 



71. C. trichocarpa, Mnhl. Sterile spikes about three, linear, long-pcdun- 

 cled ; fertile spikes 2, cylindrical, on short and mostly included peduncles; pcri- 

 gynia thin, rough-hairy, tapering from a rounded ovate base into a rather slender 

 rough beak, with long and spiny teeth, longer tli;in the oblong acute awnless 

 scale. — Deep marshes, Georgia, and northward. — Culms 2° -3° high, rough 

 above. Leaves linear, elongated. 



72. C. striata, Michx Sterile spikes 2 -4, long-podunclcd ; fertile spikes 

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

 drical ; pcrigynia thick, ovate, pubescent above the middle, contracted into a 

 short and whitish 2-clcft or emarginate beak, longer than the oblong acute scale. 



