214 CYPERACEAE 
gynium 5-15, ascending, oblong- d triangular, see striate, 4-5 mm. long, 
thic k, tapering and stipitat at base, abruptly minutely beaked, "ie. 
ner the es ng-obovate, abrupt y mucronate, Pis ie purple- tinged 
scales.—Sandy ravines, Gadsden Fla. and S —Spr.—A very y well- 
marked species which has not been collected for many can 
XV. ALBAE Aschers. & Graebn.  Slenderly long-stoloniferous. Culm 
very slender, obtusely triangular, leafy near the base. Le af- blađes of the 
Later 
fertile culm very narrow, involute. Terminal spike linear, staminate. 
spikes 2 or 3, (or 4), M or linear, loosely 4—8-flowered, all us pedicle 
linear or onion often overtopping the staminate one. racts sheathing, 
ng, 
subspathaeeous, bladeless, white-hyaline above. Scales white- Seale: Denm 
ish-tinged. Perigynium erect, obovoid, tri- 
angular, glabrous, nerved, taperin e 
base, abruptly minutely beaked, the orifice 
entire, hyaline. Achene triangular, closely 
enveloped, the sides concave. Style-base very 
short, bulbous- bey xd. a with the 
achene. Stigmas 3, long. 
51. C. eburnea Boott. Culm 1-3.5 dm. tall, 
slender, smooth: leaf-blades 0.5 mm. wide: 
staminate spike 4-8 mm. long, sessile or 
nearly so: pistillate spikes 2—4 usually 2, 2— 
6-flowered, exsert-peduneled, the upper over- 
topping the staminate : seales exceeded 
b ia, tuse or aeutish 
y p whitish, obt |^ € 
perigynium elliptie- P) membranous, 2 mm . lon ng, obseurely nerved, tapering 
at base, abruptly very short-beaked —Caleareous Mud talus- ey es, and ar 
various provinces N of Coastal Plain, Va. and T o Nebr., B. C, Mackenzie, 
and Newf.—Spr.-early sum.—In ou Para in ol haded situations. 
XVI. PANICEAE Tuckerm. Stoloniferous. Culm central, slender, leafy 
towards the base. Basal a brownish or purplish-tinge Terminal spike 
staminate, linear or linear-oblong. Lateral spikes 1-5 : pistillate, loosely to 
rather closely several-many-flowered, ew or several ranks, on erect, ex- 
serted or included peduncles. Bracts PAURA not ee or dark-aurieled, 
the blades developed. Scales purplish or 
reddish-brown-tinged. Perigynium ascending 
or spreading, ovoid or obovoid, membranous, 
obtusely triangular, slightly inflated, gla- 
pointed or beake y? orifice entire or nearly 
Achene Doos Style-base slender, 
jointed with achene. Stigmas 3. 
| - C. Meadii Dewey. Rootstock deep- 
d n pe culm phyllopodie, 
ish, or but little 
purplish tinged a at ‘the base: pd rae 2.5-7 
wide: inate spi long,” € : 
the and a rough: pios. spikes 1-8, oblong or linear- poiius d -3.5 
em. long, 5-7 mm. wide: scales ovate, obtuse to 'euspidate: perigynium obovoid, 
