218 CYPERACEAE 
tight: bract-sheaths strongly diede an se serrulate at the mouth: ee spike 
sessile or nearly so: pistillate spikes , linear-oblong, 1-3 em. long, rather 
loosely 10-20-flowered, upper contiguots, e pde rA ee cale 
obtuse to acuminate, greenish: perigyn . long, obovoid- ‘elliptic, 
nerveless or nearly so, straight beakad. mac woes angled n a 
i j ils, Blue Ridge and more northern 
y I. to 
Mich., Newf., and N N. J.—Spr.—A pe distributed northern eee reach- 
ing our area ‘in the higher mountains o 
69. C. blanda Dewey. Culm 1-6 dm. tall, s but Mie flattened in drying, 
iiu slightly winged above: leaf- blades E e wide, soft, the sheaths 
very loose with much crinkled margin spiko poem Or 'sho rt-pedun- 
dd or a even Tong: g-peduneled: pistillate s bu 2—5, oblong or linear-oblong, 
5—3 em. long, 3. wide, closely 8—25-flowered, erect, ned contiguous 
or IE erf Mun scales oe the lower at least t strongly wned: peri- 
gm um obov e 3—4 mm. long.—Dry ‘woodlands, in calcareous or irn, soils, 
us provi ; Fla. to Tex., N. D., and Me.—Spr.-sum.—One of the most 
widely distributed and abundant Seca in the E U. 8. 
70. C. gracilescens Steud. Culm 1.5-6 dm. tall, slender, ipd scarcely winged, 
serrulate above, not flattened in pice leaf-blades 3-7 m wide, their sheaths 
tight, with margins little erinkled: staminate spike ind. hes stalked : pistil- 
late spikes 2—4, linea shanty e, 7-30 mm. long, 3—4 mm. thick, loosely 7—20- 
er 
a : 
spicuous, strongly bent. [C. laxiflora (Fl. SE. Y cee not Lam. ]— ~The 
open parts of een mostly in neutral soils, 2. pun rarely uer 
Plain, Tenn. to Ark., Mich., and E Que.—Spr.- 
VIII. OLIGOCARPAE Carey. Culm slender, central, leafy. Leaf-blades 
flat. Basal sheaths brownish or purplish. Terminal spike staminate, linear. 
Lateral pass 2—4, pistillate, few—many-flowered in few-several ranks, erect, 
n more or less strongly exserted peduncles. Bracts sheathing, not colored or 
dark- ines the blades leaf-like. Scales 
ovate, pointed. erigynium ascending, ob- 
long-elliptie or obovoid, glabrous, subecori- 
aceous, finely many-striate, obtusely tri- 
lar in d tapering at base, 
constricted at apex, closely enveloping the 
achene, je or slightly beaked, the orifice 
entire. Achene triangular, ip jointed 
with the slender style. Stigmas 
E S 
LAS 
I: 
EET 
ECL FÉ. 
em T 
ETE x £ 
UID DU M 
TX 0L Dr mul 2 
E RE 
ce ag? eS, 
71. C. oligocarpa Schk. Culm 1-5 es tall, 
roughened, purplish-tinged at the bas : leaf- 
blades 2-4.5 mm iis the she ae ot his- 
n staminate pike 1-2.5 long, le | | 
ore or less pedu Bd. pistillate puces 2—4 erst, oe separated, loosely 
2-8 flo Mud: Eis ics. n ney oun idate: perigyn ascendin .0—4 
long, scarcely 2 wi e body obovoid, ripe triangular, ab- 
apt ine into a pm ioni 0.75 mm. long. —Slopes and rocky banks 
