* 
544 CYPERACEÆ. (SEDGE FAMILY.) 
subulate, smooth, reflexed, the rigid teeth reflexed and appressed to the slender 
beak, 4 times as long as the awn-pointed scale. — Deep swamps, Fayetteville, 
North Carolina (Curtis), and northward. — Culms smooth, filiform, 19 —13? 
high, longer than the linear leaves. 
++ ++ Sterile spike single: style deciduous, straight or nearly so: fertile spikes few- 
flowered. 
67. C. folliculata, L. Fertile spikes 3-4, ovoid, remote, 8 - 10-flowered, 
on erect peduncles, sterile at the summit ; perigynia (6 long) horizontal, lance- 
olate, tapering into a smooth beak, with erect hispid teeth, one third longer than 
the lanceolate rough-pointed scale. — Wet margins of streams, Florida, and 
northward. — Culms smooth, 29 high, commonly exceeding the linear and flat 
leaves. + 
68. C. turgescens, Torr. Fertile spikes 2, near or remote, on short in- 
cluded 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, 29—39 high, longer than the narrow rigid 
and channelled leaves. 
69. 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, 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 1°-2° high, rough above, 
longer than the narrowly linear leaves. 
70. C. intumescens, Rudge. Fertile spikes 2-4, approximate, the up- 
per 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. (C. folliculata, Ell.) — Shady swamps, Florida, and northward. — Culms 
1? — 13? high, rough above, shorter than the broadly linear deep-green leaves me 
bracts. i 
++ ++ ++ Sterile spikes 9 or more: fertile spikes many-flowered. 
= Perigynia pubescent. 
7i. C. trichocarpa, Muhl. Sterile spikes about three, linear, long-pedun- 
cled ; fertile spikes 2, cylindrical, on short and mostly included peduncles; peri: 
gynia thin, rough-hairy, tapering from a rounded ovate base into a rath sse 
rough béak, with long and spiny teeth, longer than the oblong acute 
. Seale. — Deep marshes, Georgia, and northward. — Culms 29-3? high, roug 
ong-peduncled ; fertile spikes — 
