CYPERACEAE 217 
rated, the upper short-peduneled and erect, the lower drooping on filiform 
peduncles, rather loosely 5—10-flowered: secon nd bract usually shorter than culm 
scales ovate, shorter than perigynia, acute to cuspidate: perigynium oblo ong- 
obovoid, ae mm. long, the sides 1.75-2.25 mm. wide, finely many-nerved, taper- 
ing at base and very short-beaked at apex.—Woods and e in acid or 
neutral acs ere provinces, rarely Coastal Plain, N. C. to Mo., Wis., and 
Me.—Spr. 
63. C. albursina Sheldon. Culm 2-6 dm. tall, Po flattened in drying, 
narrowly winged, ue leaf-blades 7—30 m Mies staminate spike ses- 
sile or nearly so, 5-17 mm. lon ng the scales patie oe : pistillate spikes 2—4, 
linear, the upper clos ely A mate and scarcely Henn peduneled, the lower 
distant and slender- dun neled, peers 3—18- ru ered: seales strongly ‘scarious- 
margined: pe rigynium ascen ndin ng, Obr oid, 3-4 mm. , 2 mm. wide, finely 
—Wooded calcareous bluffs, various provinces N of " Coastal Plain, 
Va. m Tenn. to Mo., Minn., and Que.—Spr. 
64. C. heterosperma Wahl. eerie ie id culm p 15-4 dm, tall, 
wide 
.5—4.5 em. long, 2- 
penes us Er iu Pu p ja short-cuspidate: perigynium nar- 
rowly obovoid, 3-4.2 . long. [C. a s Muhl.]—Dry woods, in aeid or 
neutral soils, 1 Blue Ridge "UN. C. to Tenn., aa various provinces, Va. to Mich. 
and Me. —In the mountains in our "ran ge. 
65. C. laxiflora Lam.  Loosely cespitose: arc 2-6 dm. tall, Md s 
and central: leaf-blades 7— 14 mm. wide, firm, the lcnger basal ones than 
3 dm. long with sides strongly parallel: ee spike um long stalked, 
its scales on reddish-brown-tinged: p Od usually 2, linear-oblong, 
1.5-5 c ong, 6-20-flowered: scales ovate, sh a slightly reddish- 
brown w perigynium obovoi id-fusiform ong. [C. striatula 
Michx.]|—-Dry woodlands, in acid dip Coastal Plein aie adj. provinces, Fla. 
to Tex., Ind., and Conn. — Spr r.-early 
66. C. styloflexa Buckley. Culm 2-8 dm. tall, slender, smooth, brownish at 
| ide. 
he base, loosely cespitose: leaf-blades 2.5-3.5 mm. wide e spike mostly 
long-stalk scales usually reddish-brown-tinged: pistillate spikes 1—4, 1-2 
em. long, loosely 4—15-flowered, the lower droo on elongate filiform pedun- 
cles l D ute or cuspidate, reddish-brown-tinged: pe m 4-5 
mm. long, 1.5-2 thick, divergent, d a at both ends.—Dry woodlands. 
and 
g; 
in acid MA Coastal Plais and occasionally adj. provinces, Fla. to Tex. 
Conn.—Spr.-early 
67. C. crebriflora Wiegand. Loosely cespitose: culm 2-6 dm. tall, stoutish, 
nT winged, brownish at base, e. lateral and central: leaf- blades green, 
wide: staminate spike 1—2.5 cm. long, sessile or short-peduncled: pis- 
tillabe wis 2 or 3, closely 1 10 —20- uie ed, the lowermost strongly separate, 
and c3 E scales oblong-obovate, obtuse to cuspidate, half the length 
of the perigynia rigynium elliptie-obovoid, 3.5—4.5 mm. long, subcoriaceous, 
ee -nerved. —Wo dem in acid soils, Du ‘Plein, Fla. to La. and S. C.— 
pr. 
nervia Fernald. Culm 1.5-7 dm. tall, slender, becoming decum 
EE ps ae shoots vale developed: leaf-blades 3-10 mm. "wide, their sheaths 
