766 



ORDER 155. CYPERACB^E. 



the orifice about equal to the oblong and obtuse, or ovate, cuspidate, rust-colored gl ; 

 culm 816', ascending, obtusely triq., with subradical flat and narrow Ivs. 

 Glaucous green. Marshes, common. 



153 C. irrigua Smith. 9 Spikes 2 3, ovate-oblong, thickish, nodding ; perig. 

 roundish-ovate, short-rostrate, subcompressed, shorter ihan the ovate-lanceolate, 

 cJiestnut-brown gl. ; st. near a foot high, longer than the flat, subcurved Ivs. ; 



glaucous. <5 Spike rarely $ at the summit, or $ spikes with stamens at the 



base. Marsh. Bridgewater, N. Y. (Gray) also in marshes in Mass, and Mich. 

 (Cooley), rare. (C. limosa, (3 irrigua Wahl.) 



154 C. rariflora Smith. $ Spikes about 2 linear, quite loose-flowered, long-ped., 

 nodding ; perig. ovate, oblong, triqu., depressed, equaling the ovate, subcircinate, 

 brown gl ; culm 10'. Glaucous. White Mountains, N. II. (Barratt). (0. limosa 

 ft. rariflora Wahl.) 



155 C. Barrattii Torr. (B. t. 176.) $ Spike 1, erect, cyl., long (rarely 2), with 

 ovate, obtuse, dark gls. ; $ spikes 2 to 6, often long-nyZ., staminate at apex, the 

 lower on slender, recurved pedicels, upper erect, commonly single, sometimes 2 or 

 4 from the ?;ame bract, purple or dark ; perig. ovate or lance-ovate, often with a 

 very short beak, obtuse, slightly diverging, roughish, longer than the ovate dark 

 gl ; culm 1 to 2f, longer than the long, rough leaves ; glaucous green. N. J. to 

 N. Car. (Curtis). (C. flacca Carey. C. recurva Huds.) 



156 C. milliacea Muhl. $ Spike erect, slender ; $ spikes 2 3, long-cyl., slen- 

 der, loose-flowered below, nodding; perig. ovate, triq., glabrous, subrostrate, en- 

 tire at the orifice, longer than the oblong, emarginata or obcordate, awned gl. ; 

 st. 1 2 24', slender, scabrous ; Ivs. linear-lane. Yellowish green. Wet meadows, 

 common. 



157 C. hystriclna Willd. (B. t. 152.) $ Spike rarely pistillate at the sum- 

 mit ; $ spikes 2 4, oblong, cyl., attenuate, subdistant, long-bracteate, nodding, 

 rarely sheathed ; perig. ovate, diverging, inflated, subtriq., nerved, bifid, glabrous, 

 twice longer than the oblong, emarginate, submucronate gl. ; culm 12 24', scab- 

 rous above, with long, linear-lance. Ivs. Yellowish green. .Wet places, very 

 common. (See Sill. Journ., 1848. C. Georgiana.) 



/?. COOLEYI. $ Spikes short small, $ spikes often shgrt-ovate, the lowest on a 

 very long (5 to 8'), recurved, filiform peduncle; culm very slender, prostrate, 

 shorter than the long, narrow Ivs. Mich. (Cooley). (C. Cooleyi, Ed. 1.) 



158 C. Fseudo-cypnis L. (Schk. fig. 102.) $ Spike cyl. and elongated; $ 

 spikes 3 4, cyl., long-ped., rather remote recurved-pendulous, with long and leafy- 

 bracts; perig. ovate, lane., bidendate, reflexed, and a little shorter than the ovate- 

 lane, or setaceous gl. Common about ponds and ditches. It is smaller in all its 

 parts than C. comosa (Boott), 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. 



159 C. comosa L. (B. t. 36.) $ Spike long and slender, rarely pistillate above ; 

 ? spikes 2 5, long-cyl., pendulous, thick, dense-flowered, with very long and 



leafy bracts; perig. ovate-lane., acuminate, rostrate, deeply 2-forked, reflexed, triq., 

 glabrous, generally longer than the lane., inucronate, setaceous gl. ; culm 18 30', 

 large, rough, with long and wide, rough leaves and bracts. Plant very glabrous 

 and yellowish-green. Wet places about ponds and ditches, common. (C. fur- 

 cata Ell.) 



160 trichocarpa Muhl. ? Spikes about ^, erect, rarely 1, or ? above, cyl., 

 lower shorter ; $ spikes 2 4, erect, long-cyl., smoothish, rather loose-flowered ; 

 perig. ovate, conic, inflated, nerved, rostrate, bifurcate, densely pubescent, about 

 twice lorgcr than the ovate-lane, gl. ; culm 15 30', scabrous above, and with 

 pubescent leaves and sheaths. Light green. In wet and marshy places, com- 

 mon. 



/?. TUBBIXATA Dew. $ spikes ovate or short oblong, thick, remote, dense- 

 flowfci-ed ; perig. subdiverging, ovate and conic, rostrate, longer than the 

 ovate-oblong-, nmcronate gL ; st. 2 3f. Glaucous green. In a pond in 

 Bcckmau, N. Y., there abundant 



161 C. verruccsa Mubl. $ Spike (rarely 2) cyl., large, obtuflc, stalked, with 



