234 CYPERACEAE 
bidentate beak. Achene triangular, con- 
1 : 
an m e e Nea: 
tinuous with the flexuous style. Stigmas isis. a 5 
three, short. 
roA TAREE 
.123. C. Frankii Kunth. Culm a very 
leafy, 1-8 dm. tall: leaf-blades 3 -10 mm 
reme "m 
dus TIBET 
wide: staminate spike peduncled or nearly | 
sessile: pistillate spikes 3- 7, cylindrie, | 
erect, 1—4 ng, 8- thick, very [5 
densely many-flowered, the lower slender | ii 
peduneled: scales linear , very Uu 
rough: perigynium squarrose, g , 4-5 i 
, 2-2.5 mm. thick, obeonie, with 
a depresse ed summit from which arises the 
m pe n beak. MN stenolepis 
Torr.]—Open mps and wet meadows, 
in calcareous districts, s. oui provinces ‘rarely “Coastal Plain, Ga. to Tex., Mo., 
Il., W N. Y. and S Pa. — Sum 
124. C. eda L. Culm 3-9 dm. tall, n rough above: leaf-blades 
elonga wide: spikes 1-3, usually ere erect, peduncled, exceedingly dense, 
the mis QUIC m 1-3 cm. lon ng, ius 22 m Ms ick, the uppermost conspicu- 
ously dd at base: perigyni squarrose r the lower Pus obovoid, 
4—5 mm. long, 3 mm. thick, emu green, b or ng tawny, few-nerved, trun- 
cately contracted into the subulate minutely bidentate beak: achene ee oval, 
3 mm. long, flat-sided, tapering into the stout per d flexuous style.—Swampy 
Ud. in acid soils, various provinces, N. C. Ark., Nebr., Mich., and 
—Sum. 
Que. 
125. C. typhina Michx. Culm 3-9 = tall, ded d rough above: leaf- 
blades elongate, 3.5—10 mm. wide: spikes 1—6, usually 3, erect, peduncled, very 
dense, the pistillate tae ion 1.2—4.5 em. long, 8-16 mm. thick. often staminate 
at both ends: perigynium ascending or the lower spreading or reflexed, obovoid, 
e 
ak: achene obovoid, 2.5 mm. , the sides concave, tipped with the sle E 
style which is straight below. [C. typhinoides Sehw.]— iini SE woods, 
calcareous districts, various provinces, Ga. to L pes Que.— 
II. LUPULINAE Tuckerm. Culm stout and leafy. Leaf-blades flat, 
U 
XXXV 
strongly septate-nodulose. pper 1-3 spikes staminate, linear. Lateral spikes 
d" pistillate, or staminate at apex, 
nsely several-many-flowered. ^ Braets 
a or lowest more or less an 
ing.  Perigynium large, 10-20 mm. long, 
green, ovoid, strongly ribbed or "nerved. 
membranaceous or subcoriaceous, taper- 
ing to the deeply bidentate beak. Achene 
triangular, continuous with the style. 
Stigmas 3, short 
126. C. intumescens Rudge.  Cespitose, 
. the eulm 3-10 dm. tall, slender, red- 
dish-purple at base; leaf-blades elon- 
gate, dull-green: staminate spike usually 
long-peduneled:  pistillate spikes 1-3, ' 
