CAREX C YPERACEA . 701 
nodding on long peduncles and loosely flowered at base: scales purple or 
ferruginous, pale in the middle, lanceolate or oblong, ciliate, acute or 
with a rough awn, rarely obtuse: perigynia oval, ovate, round or obovdte 
abruptly or gradually beaked with the orifice varying from nearly entire 
to bidentate with serrate teeth, coriaceous, sparingly toothed on 
the upper margins, compressed lenticular, punctate, broader than the 
scale. In dry alluvial soil, southern Oregon to California. 
C. Nebraskensis. Dewey Sill. Journ. xviii, 102. Stems rather stout, 
erect,s harply angled 1-2 feet high: leaves pale green, 2-3 lines wide, rough- 
margined, not exceeding the stem: lower bract foliaceous, sometimes 
equalling the stem, the upper much shorter and narrower: staminate 
spikes commonly 2, peduncled: pistillate spikes 2-4, dense, oblong-cylindric, 
erect, 9-15 lines long, about three lines thick,sessile or the lower on short 
peduncles: perigynia elliptic or somewhat obovate, short-beaked, the 
beak 2-toothed, longer than the ovate or lanceolate acute brown scale: 
_ stigmas 2. In wet places eastern Oregon and Washington to Nebraska 
and New Mexico. ; 
C. aquatilis Wahl. Kongl. Vet. Acad Handl. (11) xxiv, 165. 
Stems rather stout, erect, sharp-angled above, smooth or nearly so, 2-4 
feet’ high; leaves elongated, sometimes equalling the stem, 2-3 lines wide: 
bracts similar to the leaves, the lower exceeding the stem: staminate 
spikes 1-3, peduncled: pistillate spikes narrowly linear-cylindric, often 
staminate at the summit, erect or slightly spreading 1-2 inches long, 2-3 
lines thick, sessile and dense or the lower narrowed and loosely-flowered 
at the base, and short peduncled: perigynia elliptic, green, minutely 
beaked, the orifice entire, longer than or equalling the oblong scale: stig- 
mas 2. In swamps and along streams. California to Brit. Columbia and 
the Atlantic States: -also in Kurope. 
C. stricta Lam. Encycl. iii, 387. Stems slender, stiff, erect, usu- 
ally in dense tufts, sharply angled, rough above, 114-4 feet high: leaves 
_long, rarely exceeding the stem, very. rough on the margins 1-2 lines wide: 
_ lower bracts similar, sometimes equalling the stem: staminate spikes 
solitary or sometimes 2, peduncled: pistillate spikes 2-5, linear-cylindric, 
_ often staminate at the top, very densely- flowered, or loose at base 4-2 
- inches long, about 2 lines thick, all sessile or the lower peduncled: perigy- 
~ nia ovate elliptic, ascending, acute, aline long or less, minutely beaked | 
' the orifice entire or nearly so, longer than the brown purple green-mar- 
gined oblong or lanceolate scale: stigmas 2. In swamps, California to 
Washington and the Atlantic States. 
©. interrupta Boeck]. Linnea xl. 432. Stems slender, erect, 12-16 
inches high. sharply angled above: leaves elongated, usually exceeding 
the stem about 2 lines wide; bracts allshorter than the infioresence: stam- 
nate spike usually solitary, 8-10 lines long, pistillate spikes 3-5, 6-18 lines 
long, about 2 lines thick, often staminate at the top, densely flowered 
above, the lower ones loose and often interrupted at base; sessile or the 
the lowest one short-peduncled: scales brown with pale midrib and mar- 
gins, nearly as long as the perigynium, broadly lanceolate appressed: 
perigynia small, green, elliptical, shortly beaked. Along mountain 
streams, Western Oregon. . 
C. lenti¢ularis Michx. Fl ii, 172. Stems very slender, erect 1-2 
feet high: leaves rarely over a line wide, shorter or rarely longer than the 
stem, slightly rough on the margins: lower bracts similar to the leaves, 
usually much longer than the spikes: staminate spikes solitary or rarely 2, 
sessile or short peduncled, often pistillate above: pistillate spikes 2-5, 
clustered at the summit or the lower distant, sessile or the lower short 
peduncled: 4-12 lines ong, about 2 lines thick: perigynia ovate or ellip- 
tic, acute, tipped with a minute entire beak longer than the appressed 
