ORDER 155. OYPERACE^. 767 



oblong, retnse, mucronate gls. ; $ 3 to 6. soon nodding, cyl., leafy-bracted, $ 

 above, lowest exsert-ped. ; perig. ovate-compressed, triq., glaucous, short-rostrate- 

 bifid, scarcely veined, about equal to the ovate-oblong, emarginate, mucronate or 

 awned brown gl. ; the awn extending beyond the perig. ; culm 2 to 3f, erect, stiff, 

 triq., striate ; Ivs. and bracts stiff, rough, often over-passing the culm ; color glau- 

 cous green, with dark spikes. Wet grounds, Penn. to Ga., La. and Ky. Apr., 

 May. (C. glaucescens Ell.) 



ft. ANDEOGTNA Curt. Spikes 4 to 7, large, 3 to 4' long, upper one staminate at 

 base, the others pistillate and in part staminate at apex. Wilmington, N. 

 Car. (Curtis). "An autumnal var.," flowers in Oct. 



162 C. lamiginosa Michx. $ Spikes 2, oblong, slender, erect; 9 spikes' 2 3, 

 cyl., erect, dense-flowered, sometimes short-oblong and thick, subrostrate; perig. 

 ovate, short-rostrate, bicuspitate, subtriq., thick, pubescent and. woolly, about 

 equaling the ovate-lane., awned gl. ; culm 12 24', nearly round below, withyZo*, 

 linear-lane. Ivs. and bracts. Glabrous and yellowish-green. Wet places and 

 marshes, common. (C. pellita Muhl.) 



163 C. filiformis L. (B. t. 121.) $ Spikes 2 3, with oblong glumes ; $ spikes 

 2 3, ovate, oblong, short-cyl., close-flowered, remotish, erect ; perig. ovate, viUous, 

 short-rostrate, bifurcate, about equaling the ovate, acute gl ; culm 20 30', erect, 

 slender, stiff, with convolute Ivs. and bracts. Pale green. Marshes, common. 



164 C. striata MX. (B. 1. 141.) $ Spikes 1 to 4, commonly 2, oblong, cyL, erect, 

 the lower sessile, shorter; 9 spikes 2, rarely 1, long-cylc., erect, dense, with peds. 

 inclosed, upper often $ at apex; perig. ovate, acuminate, inflated, rough-downy, 

 orifice bifid, scarce rostrate, twice longer than the acute, tawny gl. ; culm 14 20', 

 erect, leafy-bracted, longer than the striate, lane. Ivs. Penn., N. J. to Ma. (C. 

 polymorpha, Ed. 1.) 



165 C. Houghtonii Torr. (B. t. 49.) $ Spikes 1 to 3, oblong, erect, purple to 

 pale, with oblong, obtuse, mucronate, white-edged gig. ; 9 spikes 2 or 3, thickish, 

 oblong-cyl., leafy-bracted; perig. ovate, inflated, short-rostrate, dirty brown, bifur- 

 cate, veined, hispid-downy, nearly twice longer than the ovate, mucronate, white- 

 edged gl. ; culm about If, erect, stiff, triq., rough, about equaling the Ivs. Fla. 

 (Chapman !), also Lake La Biche, N. W. Ter. (Houghton). 



166 C. polymorpha Muhl. Var. 2. (B. t. 56.) $ Spikes 1 to 3, oftener 2, 

 oblong, erect, sessile, with oblong, obtuse glumes; 9 2, sometimes 1, oblong- 

 cyl., erect, rather loose, upper staminate at apex, lower remote, exsert-ped. ; pe- 

 rig. oval-ovate, slightly inflated, subtriq., short-rostrate, orifice oblique, veined, 

 glaucous, a littlo longer than the ovate, reddish, white-edged gL ; culm 2 to 20', 

 erect, stiff, triq., longer than the light green Ivs., which are reddish at the root 

 Sandy plains, Mass, to Penn. and W. K Y. (C. Halseyana, Ed. 1.) 



167 C. Cherokeensis Schw. (B. t. 78.) $ Spikes 2 or 3, cyl., erect, the high- 

 est larger, pedunculate, rarely pistillate at base ; 9 spikes 3 to 6, cyL, distant, often 

 stamiuate at apex, highest sessile, the others exsert-ped., nodding, loose, rarely 

 twin; perig. lance-ovate, glabrous, veined, compressed-triq., subinflated, tapering 

 into a whitish beak, much longer than the ovate, acuminate gl. / culm 10 to 20' high, 

 leafv below and long as the Ivs. ; plant flaccid, grayish green. Ga., Fla., La. and 

 Mo. (C. Christiana Boott.) 



168 C. paludosa Good. (Schk., fig. 103.) $ Spikes 2 or 3, cyL, erect, the 

 lower shorter, smaller, sessile ; 9 spikes 1 to 4, cyl., erect, rather dense, not dis- 

 tant, alternate, lowest often long-stalked, scarcely sheathed, attenuate below, and 

 there loose-flowered, all bracted ;* perig. ovate, tapering into a short beak, biden- 

 tate, distinctly many- veined both sides, nearly equaling the narrow, cuspidate gL ; 

 culm 18' to 2f, erect, scabrous above, longer than the light green Ivs. Near Bos- 

 ton (Wm. Boott). 



169 C. gigantea Rudge. (B. t 151.) $ Spikes 1 to 3 ; erect, cyL, slender, 

 near, the lower shorter, sessile, with ovate, acute, or lane. gls. ; 9 spikes 2 to 4, 

 cyl., loose, staminate at apex, remote, the lower on long, exsert stalks, often nod- 

 ding, with long, leafy bracts ; perig. ovate or globous, ventricous, abruptly con- 

 tracted into a long, slender, cyl. beak, veined, smooth, divaricate, in maturity much 

 longer than the lance-ovate, awned, white-edged gl. ; culm 18 to 30 to 36', stout, 

 longer than the broad, strong Ivs. Marshes, Ky. to S. Car. and La. 



