ae Cot 
. 40. C. communis Bailey. Loosely cespitose: 
CYPERACEAE 211 
and swampy i ig various provinces, Fla. to Tex., Colo. N Calif., Alas., 
Lab., and Newf.—Sum 
XI. MoNTANAE Fries. Culm slender, leafy at the base. Leaf-blades 
narrow, rough above. Terminal spike linear, normally staminate. Lateral 
ikes 1—5, small, pistillate, or sometimes androgynous, subglobose to oblong, 
closely few-many- flowered, alee and sessile or short-peduncled, or in 
some species basal and long- pedun led. Lowest braet squamiform or leaflet- 
like, dee or sub- nk ing. Se ales a i d acute to 
euspidate. Perigynium membranous, ascending, the body pubescent, at least 
at the base of the beak, ec to elliptic, triangular, 2-keeled, strongly BEES 
tate at the base, abruptly contracted into 
dric or terete, emarginate to deeply 
bidentate e" hyaline-tipped. ene nor- 
mally tria ar, t des eoneave, elosely 
enveloped,  short-apieulate. Style gon 
jointed with apex of achene, thickis 
Stigmas normally 3, long 
culm 1.5-5 dm. tall, selene above: leaf- 
blades 2—4 mm. wide, shor than culm: 
staminate spike £18" mm. poe pistillate 
spikes 2—4, short-oblon ng, Meo ed, usu- 
d n 
id body un = 
\ and 1.2 mm. thick. pale, (ue E 1 o of its eae scales acuminate to obtuse, 
. nearly equalling. the perigynia.—Rocky wo dio various peewee N of Coastal 
Geer ae Minn., and N. S.—Late spr.— 
C. pennsylvanica Lam. St Bud I -stoloniferous: culm slender but 
wide: 
u i i i ith b ion, 1.5 mm 
thick, tipped with a bidentate beak much er Han the body: seales acute 
or cuspidate, ara or exceeding the perigynia.—Dry, often acid, soil, 
rious provinces, S. C. to Tenn., N. D., and N. B.—Spr. 
ucorum Willd. hd long stoloniferous: culm slender, 1-3 dm. 
tall: leaf- blades 1.5-2.5 mm. wide: pistillate spikes 2-3, suborbieular or short- 
oblong, 4—10-flowered, eon oou. api or short- -peduncled : perigynium with 
body obtusely triangular in cross-section, 1.5 mm. thick, tipped with a slender 
bidentate beak as long or longer than the body: scales acute to VR pr e 
exeeeding the EIU E: ry woodlands, acid soils, Blue Ridge more 
zeige Ducem N. C. to Wis. and Me. —Spr.—In our region ouis in the 
mountai 
48. C. varia Muhl. Cespitose: eulm slender, n 0.5-5 dm. tall, rough above, 
usually exceeding leaves: leaf-blades 0.5-2. 5 mm. wide: staminate Spike 3— 14 
mm. long, sessile or slightly peduncled, PR conspicuous: pistillate disi 
1-4, the upper dU M the io separate, 4—12-flowered: perigyn 
sparingly short-pubescent, 3-3.5 mm. long, the body ellipsoid- ovoid, 1-1.5 m 
thick, the beak about helf length of bo ody, bidentate: sca s purplish- tinged, 
about equalling perigynia.—Dry soils, various provinces WO : , Man 
and N. S.—Spr. 
