590 CLX. CYPERACE^E. CAREX 



sile, erect ; perig. oblong, obovate, very obtuse, glabrous, subtriquetrous, entire 

 at the orifice, subrostrate, twice longer than the acute glume ; st. 12 18' high, 

 erect, triquetrous, with subradical and pubescent leaves. Pale green. N. Y. 

 Tuckcrman. 



112. C. MILIACEA. Muhl. 



tf Spike erect, slender ; 9 spikes 2 3, long-cylindric, slender, loose-flowered 

 below, nodding; perig. ovate, triquetrous, glabrous, subrostrate, entire at the 

 orifice, longer than "the oblong, emarginate or obcordate, awned glume; st. 

 12 24' high, slender, scabrous ; Ivs. linear-lanceolate. Yellowish-green. Wet 

 meadows; common. 



113. C. LIMOSA. 



9 Spikes 1 3, ovate or oblong, long-pedunculate, subloose-flowered, 

 smoothish, pendulous ; perig. elliptic, compressed, very short-rostrate, entire at 

 the orifice, about equal to the oblong and obtuse, or ovate, cuspidate glume; st. 

 8 16' high, ascending, obtusely triquetrous, with subradical, flat and narrow 

 leaves. Glaucous green. Marshes ; common. 



114. C. RARIFLORA. Smith. (C. limosa. /?. rariflora. Wold.') 



9 Spikes about 2, linear, quite loose-flowered, long-pedunculate, nodding ; 

 perig. ovate-oblong, triquetrous, depressed, equaling the ovate, subcircinate, 

 brown glume; st. 10' high. Glaucous. White Mountains, N. H., Barratt. 



115. C. IRRIGUA. Smith. (G. limosa. /?. irrigua. WaU.} 



9 Spikes 2 3, ovate-oblong, thickish, nodding; perig. roundish-ovate, 

 short-rostrate, subcompressed, shorter than the ovate-lanceolate, red-brown 

 glume; st. near a foot high, longer than the flat, subrecurved leaves; glau- 

 cous. $ Spike rarely 9 at the summit, or 9 spikes with stamens at the base. 

 Marsh. Bridgewater, N. Y., Gray; also in marshes in Mass, and Mich., 

 Cooley. Rare. 



116. C. HYSTERIClNA. Wllld. 



$ Spike rarely pistillate at the summit ; 9 spikes 2 4, oblong, cylindric, 

 attenuate, subdistant, long-bracteate, nodding, rarely sheathed; perig. ovate, 

 inflated, subtriquetrous, nerved, bifid, glabrous, twice longer than the oblong, 

 emarginate, submucronate glume ; st. 12 24' high, scabrous above, with long, 

 linear-lanceolate leaves. Yellowish green. Wet places ; very common. 



117. C. PSEUDO-CYPERUS. 



J* Spike cylindric and elongated ; 9 spikes 3 4, cylindric, long-peduncu- 

 late, rather remote, recurved-pendulous, with long and leafy bracts; perig. 

 ovate, lanceolate, bidentate, reflexed, and a little shorter than the ovate-lance- 

 olate or setaceous glume. Common about ponds and ditches. It is smaller in 

 all its parts than C. comosa, Doott; and, besides, the fruit of the latter is 

 deeply and widely bifurcate, and its glume is hispid or ciliate. The two have 

 been confounded in our country, though long known. 



118. C. COMOSA. (C. furcata. Ell. C. Pseudo-cyperus. 1st edit.} 



$ Spike long and slender, rarely pistillate above ; 9 spikes 2 5, long- 

 cylindric, pendulous, thick, dense-flowered, with very long and leafy bracts; 

 perig. ovate-lanceolate, acuminate, rostrate, 2-forked, reflexed, triquetrous, gla- 

 brous, generally longer than the lanceolate, mucronate, setaceous glume ; st. 

 18 30' high, large, rough, with long and wide, rough leaves and bracts. Plant 

 very glabrous and yellowish-green. Wet places about ponds and ditches ; 

 common. 



119. C. COOLEYI. Dew. 



c? Spike short and small, with oblong-lancelate glumes; 9 spikes 2 4, 

 cylindric, oblong, or ovate and short, rather dense-flowered, upper sessile, lower 

 on very long, recurved peduncles ; perig. ovate-rostrate or oblong-lanceolate, 

 bifurcate, nerved, about equal to the ovate, awned, scabrous glume ; st. filiform 

 and scabrous, subrostrate, a foot or more high, much shorter than the subradi- 

 cal, narrow leaves. Light green. Marsh in Macomb Co., Mich., Cooley. 



120. C. SCAERATA. SchW. 



9 Spikes 3 6, cylindric, subrecurved, remotish, long-pedunculate ; perig. 

 vate-oblong, subinflated, subbifid, rostrate, quite scabrous, longer than the 



