This section is from the book "Class-Book Of Botany USA&Canada", by Alphonso Wood. Also available from Amazon: Class-Book Of Botany.
117 C. retrocurya Dew. Spikes 2 - 4, on long, filiform, recurved peduncles, bractcate, subdense-flowered, short and thick, oblong; perig. ovate, triqu. nerved, obtusish, equaling the ovate, cuspidate glume; st. 6 - 12' high, prostrate; lvs. radical and wide. - Glaucous. Open woods, rare. Has been considered C. digitalis, Willd., but is different.
118 C. conoidea Schk. nec Muhl. (B. t. 81.) Spikes 2 - 3, oblong, or ovate-oblong, remote, erect, rather dense-flowered, bracteate; perig. oblong-conic, obtusish, glabrous, nerved, subdiverging, entire at the mouth, a little longer than the ovate-subulate glume; st. 8 - 12' high; lvs. towards the base, shorter than the stem. - Bright green. Moist, upland meadows, common.
119 C. grisea Ward. (B. t. 85.) Spike oblong, slender; spikes 2 to 4 oblong, lax-flowered, few-flowered, erect, remote; perig. ovate, or oblong-ovate, obtusish, glabrous, ventricous, nerved, subtriquetrous, entire at the mouth, a little longer than the ovate, scabro-mucronate glume; st. 10 - 18" high, triquetrous, leafy. - Bright, to pale green. Woods, hedges and meadows, common, N. and Mid. States. (C. laxiflora Schk. et Muhl. nec Lam.)
120 C. juncea Willd. Spike short-cylindric, with oblong, obtuse glumes; spikes 2, rarely 3, filiform, loose and alternate-flowered, pedunculate, long-seta-ceous-bracted; perig. lanceolate, slender, subtriquetrous, longer than the ovate. obtuse, white-edged glume; culm If or more, slender, longer than the radical, bristle-form leaves; aspect light green, rush-like. - Roan Mts., N. Car. (C. miser Buckley).
121 C. digitalis Willd. (B. t. 92.) Spikes about 3, loosely 4 - 10-flowered, oblong, distant, lax and recurved, leafy-bracted; perig. ovate, triquetrous, alternate, nerved, glabrous, short and obtuse, entire at the orifice, longer than the lance-ovate glume; st. 4 - 12', shorter than the long, linear, decumbent leaves. - Pale green. (C. Caroliniana Buckley.)
β. Van Vleckh Dew. Smaller; perig. more remote and smaller. - Open, moist woods, common. Has been mistaken for C. oliocarpa, Schk. & Muhl.
122 C. ebumea Boott. (t. 184). Spikes 2 - 3, erect, 3 - 6-flowered, ovate, with white, leafless sheaths, and the upper higher than the spike; perig. ovate-globous, rostrate, or slightly obovate, glabrous and brown in maturity, twice longer than the white, ovate, hyaline glume; cm. 4 - 10', erect, with subradical and bristle-form-leaves. - Pale green, common, limestone grounds. S. W. Vt. to Kan. and southward.
123 C. Washingtoniana Dew. Spike erect, slender, with oblong, obtuse, dark brown glumes; spikes 2 to 4, rarely 6, upper short, sessile, near, lower much longer, loose-cylindric, subremote, stalked, loose-flowered, all brown; perig. ovoid, tapering above, compressed-triquetrous, orifice entire, about equaling or often shorter than the ovate-lanceolate, dark-brown, white-edged glume; culm If or more, triquetrous, smooth, longer than the fat, smooth lvs.; light green. - White Mts. N. H., the most common Carex there, forming a turf with the mosses and lichens on the borders of ponds. (C. rigida, β. Carey; but differs in its fruit, glume, loose spikes, lvs. etc. )
124 C. granulans Muhl. (B. t. 84.) Spikes 2 - 4. cyliudrie, oblong, dense-flowered, suberect; perig. roundish-ovate, nerved, very short-beaked and recurved, entire at the oritice, nearly twice as long as the ovate-acuminate glume: st. 8 - 16 , erect or subdecumbent, smooth, leafy. - Glaucous green except the mature, yellow-spikes. Moist soils in meadows and hedges, along brooks, abundant.
β. recta. Perig. ovate, slightly inflated, short-acute, straight-beaked or acuminate: in some the lower spikes are also long-peduncled. - S. Ill. (Vasey) and La. (Hale).
125 C. panicea L. Spikes 2 - 3, loose-flowered, remotish. lowest long-pedune,;-late; perig. subglobous, obtuse, entire at the mouth, a little greater than the ovate, subacute glume; st. a loot high, triquetrous, leafy at the base; lvs. shorter than the stem. - Light green. Near Boston (Pickering).
126 C. livida Vahl. . Spite oblong; spikes 2 - 3. oblong-eylindric, subloose-
flowered; perig. ovate-oblong, subtriquetrous, subinliated, obtuse or acutish, entire at the orifice; longer than the obtuse, oblong glume; st. 6 - 16' high, erect, triquetrous, striate, with leaves about its own length. - Glaucous green. Sphagnous swamp, near Utica. N. Y. (Gray) cedar swamp, N. J., and more northern regions. (C. Grayana, Ed. 1.)
127 C tetanica Sehk., fig. 207. Spikes 2 - 3, oblong, loose-flowered, remote; perig. obovate, recurved at the apex, entire at the orifice, with an ovate glume, ob-tusish at the upper and mucronate at the lower part of the spike; st. 6 - 10' high, triquetrous, longer than the flat and linear-lanceolate leaves. - Light green. Upland meadows, rare. Its recurved short beak or cramped neck (whence its name) distinguishes it from C. Woodii.
128 C. Woodii Dew. . Spikes 1 to 3, erect, cylindric, loose-flowered, the lowest
 
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