280 BOTANY. 
ing to a rough point, shorter than the perigynia; 4 specimens of the Expe- 
dition collection received from Washington without number or ticket. 
Carex sp.?—1}° high, smoothish; leaves (broken) 4 wide; bracts 
evaginate, the lower male filiform, exceeding the spikelet, the female broad, 
plane, exceeding the culm; male spikes 3-4, overlapping, uppermost 1’ long; 
female spikes 1-2, oblong or cylindrical, 1’ long, 3” wide, 1-3’ below the 
male, 1-2’ apart, occasionally with an empty bract 4-8’ below the spikes ; 
perigynia (very young) ovate, spreading, tapering to a cylindrical beak, 
with short teeth, delicately nerved ; stigmas 3; scales 3-nerved, purple, with 
pale margins and midnerve, the male oblanceolate obtuse, the female lan- 
ceolate or ovate, shorter than the perigynia; vagina of empty bract 6” long.— 
Willow Spring, Arizona, Rothrock (231). 
Carex sp.?—2° high or more, stout, glaucous, smooth and spongy 
below, slightly scabrous above, and with the leaves thickly nodose-reticu- 
lated; leaves 3” wide, much longer than the culm; male spikes 4, over- 
lapping, about 1’ long, rarely with a few female flowers at top and at bot- 
tom; female spikes 2, 3-14’ long, 2’ wide, about 9” below the male, 1-4’ 
apart; sometimes staminate at top, the lowest on a short peduncle; bracts 
of the lowest male spike shorter than the culm, clasping, with connate pur- 
ple auricles; bracts of the female spikes much longer than the culm, with 
vaginee 4-4’ long. In the vagina of the lowest spike, the lamina opposite 
the bract is extended above to an obtuse point. Below the female spikes 
there is sometimes an empty bract with a vagina 9’ long; perigynia (very 
young) squarrose, broadly ovate, abruptly ending in a stout, cylindrical, 
obliquely cut, minutely toothed, strongly nerved beak, purple at the orifice ; 
stigmas 3; scales 3-nerved, purple, with pale midnerve, the male oblong 
linear, obtuse, the female lanceolate acute, as long as the perigynia. The 
pale fruit and purple scales give the female spikes a variegated appear- 
ance.—Colorado (460). 
Carex sp.?—Culm and leaves as in the last; male spikes 3-4, contigu- 
ous, the upper 1-2’ long, naked or rarely the lower with a filiform, clasping 
bract exceeding its spikelet; fertile spikes 2, narrow-cylindrical, often stami- 
nate to near the base, 14-2’ long, 1-24’ below the male, and about 2’ apart, 
sometimes with a lower, 4—S’ distant, empty bract, the upper sessile, the lower 
