150 CYPERACEAE 
3. C. Martindalei Britton. Plant perennial, 2-7 dm. tall, Do e ied 
green: E erowded in capitate spikes, linear or nea arly s 
lon ng, 2-9 m D yellowish-green: scales thick, broadly elliptic X a 
ovate, 2.5- T ong, notched, mucronulate, o oded a apex, loose 
ide A bcn eli eaoid, 2—2.5 mm. long, abruptly ne eee shorter 
we the seale.—Pinelands, sand- hills, and dry woods, Coastal Plain, Fla. to 
and 8. C. 
34. C.litoreus (Clarke) Britton. Plant perennial, up to 5 dm. tall, sparingly 
bun ud Ci To in dense capitate spikes, narrowly linear, 9-12 
eales thin, doe to elliptie-ovate, 2.5-3 mm. long or 
EA na fee ne loos ely imbriea achene linear-ellipsoid, about 1.5 mm. 
gem minutely cee fully lo as doo as the seale.—Hammocks, Long Key, 
Fla. 
C. strigosus L. Plant perennial, 1-9 dm. tall, EE or somewhat 
tufted bright-green: spikelets in eal dense spikes or panicles, linear, lead 
m. long, à about 1.5 mm. wide, s eous: seales elliptic. du ola te, 4-5 m 
long, mu a. usually appressed : y linear- Banus about 2 mm. lo ml 
Ed pointed at the T. constricted at the base, about 44 as long as the 
scale mus adows, swamps, fields, and waste ‘places, various provinces, 
Fla. o Tex "Min , Ont A Me.—Often very persistent on accoun of the 
tuberiferous rena cel forms differing in size and habit have been 
x ven names. 
C. stenolepis Torr. Plant perennial, up to 12 dm. tall, Pa B 
ORA bius e jud in rather dense spikes or panicles, linea 
long, mostly 1.5-2.5 wide. stramineous: seales linear to niue unde 
-5 mm. long, somewhat jas at maturity: achene narrowly ellipsoid or linear- 
ellipsoid, about 2 mm. long, dcn pointed at the apex, constricted at the 
base, less than % as long as the e.—Swamps and low grounds, Coastal 
Plain, Fla. to Tex. and N. C. 
37. C. praelongatus Steud. Plant der Mp to 1 m. tall, sometimes tufted, 
bright-green: spikelets in i cs lax spikes or panieles, linear-subulate or 
iu subula te, 8-14 mm. long, 1 mm. wide or less, gr n mewhat 
stramineous: scale es d pu mm. long, mucronate, closely Pars 
"emm ellipsoid or nearly so, 1.5-2 m. long, abruptly pointed, less than 4% as 
long as the scale.—Low grounds, Coastal Plain and adj. pr deuda Miss. to 
Tex. and Tenn.—(Mez.) 
38. C. refractus Engelm. Plant perennial, 2-9 dm. tall, solitary or gregarious, 
pei ae spikelets in lax spikes or panieles, very narrow wly linear or subu- 
-30 m s fuly 1 mm ; ob 
-3 h 
Y, as long as the seale.—Dry woods, fields, river-banks, and swamps, Coastal 
Plain and rarely more N Dn Fla. to Tex., Mo., and N. J. 
©. floridanus Britton. ee d 1-7 dm. tall, tufted, bright-green: 
ia ts of the involuere smooth, pikelets in capitate sessile spikes, 
linear-subulate, 6—10 mm. long, dm wide or less, chestnut-brown: scales 
broadly elliptie - ovate- elliptic, a 2 mm. long, blunt, closely t 
achene ellipsoid or nearly so, about 1.5 mm. long, abruptly pointed, nearly a 
long as the scale. iur So, Everglade Keys, pen. Fla. and Florida Keys.— 
(W. I.) i 
40. C. retrofractus (L.) Torr. Plant perennial, up to 1 m. tall, solitary or 
gregarious, grayish -green : bracts of the involucre sooth or nearly SO, i as 
ong inflorescence, pubescent: spikelets crowded in turbina or 
= obovate aia spikes, subulate, 5-7 mm. long, less than 1 mm. wide, d 
