aeuminate, much shorter than the perigynia: perigyn ium 4—5.5 . long, 
EE strongly nerved.—Wooded s a neutral soils, various iota. 
Fla. to S Mo., IlL, and Mass.—Spr.-s 
18. C. crus-corvi Shuttleworth. Culm 5-12 dm. tall, stout, very rough above: 
leaf. blades 5-12 mm. wide, the ries conspieuously red- dotted: head com- 
und, branching, A dm. long, 2.5-7.5 em. wide, the spikes ve E, piu 
hia much xeeeding scales, elongate- lanceolate, 2.79 6-7 
mm. long, the d hard and disk Jike ——Swamps, neutral soils, "Gut aa 
Plain e more northern provinces, Fla. to Tex., Nebr., Minn., and Ind.—Late 
spr.—su 
. CANESCENTES Fries. Mi aa but in some ios with slender 
stolons. Culm triangular. Sheaths not cross-rugulose. Spikes 1-10, wi 
few to many perigynia, the anne one gynaecan orm the lateral pistillate 
or gynaecandrous, simple. Bracts inconspicuous. Perigynia plano-convex, 
white-puncticulate, lanceolate, ovate, oval, or 
obovoid, appressed to spreading, beakless to 
prominently beaked, more or less nerved on 
both sides, no ined, but 
o winged or marg 
acute-edged above, nearly or entirely filled by 
lenticular achene. Style-base not enlarged. 
Stigmas 2 
C. brunnescens (Pers.) Poir. Culm 2-5 
dm. tall, slender, stiff: leaf-blades 1-2.5 
mm. wide, dark-green, not glaucous: pda 
S 
ered: scales ovate, sho rter the m eri- 
gynia: perigynt ium MÀ spreading. E : d 
mature, 2-3 mm. long, the f 
iiic bidentate rghit ak 4 a of body.—Wet soil ae E in 
acid soils, wi Ridge, N. C. and Tenn., various provinces, N N. J. to Mi ich., 
206 CYPERACEAE 
ous, small, yellowish-green: bracts inconspicuous: scales ovate or S 
"EP à Newf. ma —Very widely distributed and Tou t N. In 
our region 2 in the higher mountai 
VI. DEWEYANAE Tuckerm. Densely cespitose. Culm triangular. Sh 
not red-dotted or cross-rugulose. Spikes 3-8, gynaecandrous, pistillate, or 
rarely staminate, simple. Lower one or two bracts often conspicuous. - 
gynium plano-convex, with a narrowly ovate or linear-oblong body, light- or 
yellowish-green, 3.5-5.5 mm. long, appressed, 
strongly spongy at base, only the upper- ‘halt 
sharp-edged, round-tapering at base, nerved 
on the outer face, nerved or nerveless on the 
inner face, the beak bidentate to deeply 
bidentate. Achene lenticular. Stigmas 2 
C. bromoides Schk. Culm 3-6 dm. tall, 
slender, Py rough above: leaf-blades 2 mm. 
wers basal or inal 
both: perigynium narrowly lanceolate, ex- 
ceeding the oblong-lanceolate scale, 4-5.5 
