148 CYPERACEAE 
tively narrower in age, 6-14 mm. long, 3-4 mm. wide, pa ale-green: din Mex ind 
lanceolate, about 2.5 mm. long, obtuse or acuti sh, nearly straight: e nar- 
rowly ellipsoid, about 1.5 mm. long, short- -stipitate and short- beaked, aint, 
fully % as long as the scale. —Dam mp soil, low grounds, and swamps, Coastal - 
‘Plain, Fla. to Tex. and N. C.; id E Calif.— —(W. I. Mez., C. 2. psc bn 
oeeur with nodose eee and sm 
. pseudovegetus Steud. Plant mm up to 13 dm. tall, sometimes 
tufted, pale-green: spikelets erowded in rather small uet ovate to orbieu- 
lar, relative ely narrower in age, 4-6 mm. long E mm. wide, light-green: scales 
lanceolate, : about 2 mm. long, acute or aeutish, strongly curved: achene linear, 
fully 1 mm. long, slender tipitato and slen der- neu often curved, over 
as long as ties eale. t places, E low woods, and itches, Coastal Plain 
and adj. see Tu. do Te: x., Kans., and N. J.—(W. I.) 
21. C. surinamensis Rottb. Plant imd up to 12 dm. tall s solitary or 
tufted, pale-green, the seape rough above: spikelets -o in rather small 
dense heads, ovate, narrower and elongate in age, 5- P n; 2— pu 
wide, yellow or yellowish: seales UN, out 1.5; mm "qns d or aeu 
dc sa AE ellipsoid, less than 1 Ed short- stipitate a non reed 
straight, about 14 a3 long as the scale. Mois t grounds, swamps, roadsides, and 
ditches, "Coastal Plain, Fla. to Tex.— (V. I., Mer. C. Va S. E 
22. C. distans L. Plant perennial, up to 15 s tall, commonly gregarious, 
light- ‘Sia ond in ag irregular spikes, linear-fil liform, very slender, 9-25 
mm. ong Mis n EE . wide, chestnut- rens scales elliptic, about 2 mm. 
long, obtu the apex, ed imbrieate at maturity: achene 
ellipsoid or pres pese about 1.5 mm. long, aeute, somewhat shorter than 
the seale.—Banks, wet woods, and swamps, Coastal Plain and adjacent Pied- 
man (or Coe (W. I., Mex., C. A., S. A., O. W.) 
23. C. Haspan L. Plant perennial, up to 11 dm. tall, mu or i pas the 
scape smooth: spikelets few together in m a ous lax spikes, on stiff 
stalks, linear to linear-lanceolate, 6-12 mm. long, a ou: mm. wi de mostly 
reddish-brown: seales elliptie, cipticlanceviate, or EN out 1.5 mm. long, 
often mucronulate, loosely PA ed: achene pale, the bue oval, MEER 
Rs broadly obovate, about 0.5 . long, mueronulate, t 15 as long as the 
seale.—Wet pi 
nelands, swamps, er ponds, Coastal brin and adj. provinces, 
Fla. to Tex. and Va.—(W. I., Mex., C. A., 8. A., 0. W.) 
24. C. alternifolius L. s perennial up to 20 dm. tall, often 2 
bright-green, the leaves represented by basal sheaths: spikelets ra ather num 
in head-like spikes whieh te minate « slender curved or dro ooping e ovate o 
i ong, 2-2.5 S ova 
- ; : 
achene brown, the ae obovoid or oval, over mm. long, eee about 
m as long as the scale-——(UMBRELLA-SEDGE UMBRELLA-PLANT. wamps, 
cu Nat. of Africa —(W. I. \—Frequently cultivated as an ornamental 
25. C. dentatus Torr. Plant perennial, 2-5 dm. tall, somewhat don E 
green: spikelets in rather lax clusters, linear to linear-lanceolat e, 
ng, 2-2.5 mm. pd or wi Du scales 0 
long, wider, reddish- cale ate to Mi ad m 
about 2.5 mm. long, mucronate, tip not appressed: achene oe or 
See -obovoid, iS than 1 mm. long, Ud et .stpitate, abou 
t % as 
long as the seale Sandy, often E swamps and river shores, various provinces, 
C. to Ind. N. Y. and Me. Introd. in Ala. 
6. C. LeContei Torr. Plant perenm ial, up to 4 dm. tall, solitary or gre- 
garious, yellowish-green: spikelets in lax elusters, lanceolate to linear, 10-30 
