160 trichocarpa Muhl. Spikes about 3, 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 longer than the ovate-lane. gl.; culm 15 - 30', scabrous above, and with pubescent leaves and sheaths. - Light green. In wet and marshy places, common.
β. turbinata Dew. spikes ovate or short oblong, thick, remote, denseflowered; perig. subdiverging, ovate and conic, rostrate, longer than the ovate-oblong, mucronate gl.; st. 2 - 3f. - Glaucous green. In a pond in Beekman, N. Y., there abundant.
161 C. verrucosa Muhl. Spike (rarely 2) cyl., large, obtuse, stalked, with oblong, retuse, 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, muoronate or owned brown gl.; the awn extending beyond the perig.: culm 2 to 3f erect, stiff, triq., striate; lvs. and bracts stiff, rough, often over-passing the culm; color glaucous green, with dark spikes. - Wet grounds. Penn. to Ga., La. and Ky. Apr.. May. (C. glaucescens Ell.)
β. androgyna 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 van," flowers in Oct.
162 C. lanuginosa Michx. Spikes 2, oblong, slender, erect; 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, with flat, linear-lane. lvs. 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, villous, short-rostrate, bifurcate, about equaling the ovate, acute gl.; culm 20 - 30', erect, slender, stiff, with convolute lvs. and bracts. - Pale 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-cyle., erect, dense, with peds. inclosed, upper often at apex; perig. ovate, acuminate, inflated, rough-downy, orifice bifid, scarce rostrate, twice longer than the acute, tavmy gl.; culm 14 - 20', erect, leafy-bracted, longer than the striate, lane. lvs. - Penn., N. J. to Fla. (C. polymorphs, Ed. 1.)
165 C. Houghtonii Torr. (B. t. 49.) Spikes 1 to 3, oblong, erect, purple to pale, with oblong, obtuse, mucronate, white-edged gls.; 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 lvs. - Fla. (Chapman 1), 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; 2, sometimes 1, oblong-cyl., erect, rather loose, upper staminate at apex, lower remote, exsert-ped.; perig. 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, stiff, triq., longer than the 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 Schw. (B. t. 78.) Spikes 2 or 3, cyl., erect, the highest larger, pedunculate, rarely pistillate at base; spikes 3 to G. 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 than the ovate, acuminate gl.; culm 10 to 20' high, leafy below and long as the lvs.; plant flaccid, grayish green. - Ga., Fla., La and Mo." (C. Christiana Boott.)
168 C. paludosa Good. (Scbk., fig. 103.) Spikes 2 or 3, cyl., erect, the lower shorter, smaller, sessile: spikes 1 to 4, cyl., erect, rather dense, not distant, 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 lvs. - Near Boston (Wm. Boott).