Order 155.— CYPERACE^. 7G7 



oblong, retuse, mucronato gls. ; s 3 to 0, soon nodding, cyl., leafy-bracted, $ 

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

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

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

 triq., striate ; lvs. 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. glaucesceus Ell.) 



p. axdkoGYN'a Curt. Spikes -1 to 7, largo, 3 to 4' long, upper one staminato at 



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



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



162 C. lanuginosa Michx. $ Spikes 2, oblong, slender, erect ; I spikes 2—3, 

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

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

 equaling tho ovate-lane, awned gl. ; culm 12 — 24', nearly round below, -with flat, 

 Unear-lanc. lvs. and tracts. — Glabrous and yellowish-green. Wet places and 

 marshes, common. (0. pellita Muhl.) 



163 C. filiformis L. (B. t. 121.) 8 Spikes 2—3, with oblong plumes; $ spikes 

 2 — 3, ovate, oblong, short-cj-l., close-dowered, remotish, erect; perig. ovate, villous, 

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

 slender, stiff, with convolute lvs. and bracts. — Palo green. Marshes, common. 



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

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

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

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

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

 polymorpha, Ed. 1.) 



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

 pale, with oblong, obtuse, mucronato, white-edged gls. ; 2 spikes 2 or 3, thickisb, 

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

 cate, veined, hispid-downy, nearly twice longer than tho ovate, mucronate, while- 

 edged gl. ; culm about If, erect, stiff, triq., rough, about equaling tho lvs. — Flo, 

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



166 C. polymorpha Muhl. Var. 2. (B. t. 50.) $ Spikes 1 to 3, cftener 2, 

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

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

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

 glaucous, a littlo longer than tho ovate, reddish, white-edged gl. ; culm 2 to 20', 

 erect, stiff, triq., longer than tho light green lvs., which are reddish at the root. — 

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



167 C. Cherokeensis Sehw. (B. t. 78.) & Spikes 2 or 3, cyl., erect, tho high- 

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

 staminato at apex, highest sessile, tho 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, 

 1 atV below and long as tho lvs. ; plant flaccid, grayish green. — Ga., Fla., La. and 

 Mo.' (C. Christiana Boott.) 



16S C. paludosa Good. (Schlc, fig. 103.) $ Spikes 2 or 3, cyl., erect, tho 

 lower shorter, smalkr, 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 tho light green lvs. — Near Bos- 

 ton (Wm. Boott). 



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

 near, the lower shorter, sessile, with ovate, acute, or lane. gls. ; 2 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 plobous, ventricous, abruptly con- 

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

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

 longer than tho broad, strong lvs. — Marshes, Ky. to S. Car. and La. 



