Oeder 155.— CTPERAOEjB. 767 



oblong, retuse, muoronate gls. ; s 3 to 6, soon nodding, oyl., leafy-bracted, S 

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

 bifid, scarcely veined, about equal to the ovate-oblong, omarginate, muoronate or 

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

 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. (0. glaucescens Ell.) 

 p. andk6gyna Curt. Spikes 4 to "?, 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. lanuginosa Michx. S Spikes 2, oblong, slender, erect ; S spikes 2 — 3, 

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

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

 equaling the ovate-lane, awned gl. ; culm 12 — 24', nearlyround below, with^f, 

 linear-kmc. 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 ; S spikes 

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

 short-rostrate, bifurcate, about equaling the ovate, acute gl. ; culm 20 — 30', erecl^ 

 slender, stiff, with convolute his. and iracts. — Pale green. Marshes, common. 



164 C. striata Mx. (B. 1. 141.) 3 Spikes 1 to 4, commonly 2, oblong, cyl., erect, 

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

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

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

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

 polymorpha, Ed. 1.) 



165 C. HougIit6nii Torr. (B. t. 49.) $ Spikes 1 to 3, oblong, erect, purple to 

 pale, with oblong, obtuse, muoronate, white-edged gig. ; S spikes 2 or 3, thiekish, 

 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. — Ha. 

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



166 C. polym6rpha Muhl. Var. 2. (B. t. 56.) $ Spikes 1 to 3, oftener 2, 

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

 oyL, 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 little longer than the ovate, reddish, white-edged gl. ; culm 2 to 20', 

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

 Sandy plains, Mass. to Penn. and W. N. T. . (C. Halseyana, Ed. 1.) 



167 C Cherokeensis Schw. (B. t. '78.) S Spikes 2 or 3, cyl., erect, the high- 

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

 staminate 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 ilian the ovate, acuminate gl. ; culm 10 to 20' high, 

 leafy 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.) i Spikes 2 or 3, cyl., erect, the 

 lower shorter, smaller, sessile ; $ 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. gigdntea Rudge. (B. t. 151.) S Spikes 1 to 3; erect, cyl., slender, 

 near, the lower shorter, sessUe, with ovate, acute, or lane. gls. ; S 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, 

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



