302 
CYPERACEAE. 
31. Carex typhinoides Schwein. Cat-tail Sedge. (Fig. 7o1.) 
Carex typhinoides Schwein. Ann. Lyc. 1:66. 1824. 
Carex squarrosa vat. typhinoides Dewey, Am. Journ. 
Sci. 11: 316. 1826. 
Similar to the preceding species, but darker 
green, the leaves much broader, often 4//-5’’ wide, 
the similar bracts much overtopping the culm; 
spikes 2-6, cylindric, very dense, 1’-134’ long, 4’”— 
7’’ in diameter, often staminate at both ends, the 
terminal one commonly tapering to a conic sum- 
mit; basal staminate flowers much less numerous 
than in C. sqguarrosa ; perigynia dull straw-color, 
obovoid, ascending or the lowest spreading or re- 
flexed, inflated, abruptly contracted into the slender 
2-toothed beak, which is often upwardly bent; scales 
oblong-lanceolate, obtusish; achene ovoid-elliptic, 
sharply 3-angled with concave sides, tipped with 
the subulate straight style. 
In swamps, Quebec to Virginia, Louisiana and Mis- 
souri. July-Aug. 
32. Carex trichocarpa Muhl. Hairy-fruited Sedge. (Fig. 702.) 
Carex trichocarpa Muhl.; Willd. Sp. Pl. 4: 302. 1805. 
Carex trichocarpa var. imberbis A. Gray. Man. Ed. 5, 
597. _ 1867. f 
Carex laeviconica Dewey, Am. Journ. Sci. 24: 47. 1857. 
Culm usually stout and tall, smooth below, very 
rough above. Leaves elongated, glabrous, rough- 
margined, 2’’-3’’ wide, the upper ones and the similar 
bracts commonly overtopping the culm; staminate 
spikes 2-6, long-stalked; pistillate spikes cylindric, 
densely flowered except at the base, 1/—4/ long, 5/’-8’’ 
in diameter, the upper sessile or nearly so and erect, 
the lower slender-stalked and sometimes spreading or . 
drooping; perigynia ovoid-conic, pubescent or gla- 
brous, prominently many-ribbed, 4’/-5’’ long, 1//-114’’ 
in diameter, tapering gradually into the stout con- 
spicuously 2-toothed beak, the teeth somewhat spread- 
ing; scale hyaline, acute or acuminate, one-half as long 
as the perigynia or longer; stigmas 3. 
In marshes and wet meadows, Quebec to Michigan, 
south to Georgia, Missouri and Kansas. June-Aug. 
33- Carex aristata R. Br. Awned Sedge. 
(Fig. 703.) 
Carex aristata R. Br. Frank. Journ. 751. 1823. 
Carex trichocarpa var. aristata Bailey, Coult. Bot. 
Gaz. 10: 294. 1885. 
Culms stout erect, smooth or roughish above, 
sharp-angled, 2°-5° tall. Leaves elongated, 214//— 
5’’ wide, more or less scabrous, often pubescent 
beneath and on the sheaths; bracts similar, the 
lower often overtopping the culm; staminate spikes 
as in the preceding species; pistillate spikes 3-5, 
remote, cylindric, sessile or the lower short-stalked, 
loosely flowered at the base, dense above, 1/-4’ 
long, sometimes 8’’ in diameter; perigynia ascend- 
ing, conic, glabrous, conspicuously many-ribbed, 
4’’-6”’ long, gradually tapering into the conspicu- 
ously 2-toothed beak, the teeth divergent; scales 
oblong-lanceolate, rough-awned, thin-margined, 
one-half to two-thirds as long as the perigynia. 
In bogs, Ontario to the Northwest Territory, New 
York, Michigan, Utah and Oregon. June-Aug. 
