762 ORDER 155. CYPERACE^E. 



than the ovate, acute or cuspidate glume ; culm 3 to 8', erect, triquetrous, slender, 

 at length nearly prostrate, with sheathing, leafy bracts ; Ivs. radical, broad (7 to 

 10"), 3-veined, pale green. Shades, N. States. Confounded with No., Ill or 

 113, 8, until described by Carey in SQL Jour, and Gray's Manual. 



115 C. zanthosperma Dew. (B. t. 86.) <$ Spike cylindric, short, sessile, with 

 oblong, obtuse glumes; $ spikes 3 to G, oblong, cylindric. rather loose-flowered, 

 leafy-bracted, suberect, subremote, the lowest sometimes recurved; perig. ovate, 

 oblong, obtusish, minutely veined, slightly apiculate, yellow ochre color in maturity, 

 twice or thrice longer than (or the lower equaling) the broadly ovate, acute or 

 mucronate glume; culm 10 to 16', erect, smooth, arid with the lanceolate, sheathing 

 Ivs. at length yellowish. N. J. to Fla. and Tex. (C. flaccosperma Ed. 1 .) 



116 C. blanda Dew. ? Spikes 24, oblong, cylindric. subsparse-flowered, alter- 

 nate, approximate, bracieale, highest subsessile, the lowest on a long, 2-edged 

 peduncle ; perig. obovate and scarcely attenuate below ; subtriq. nerved, recurved 

 at the apex, entire at the orifice, little longer than the ovate, scabro-mucronate 

 glume; st. 8 12', triquetrous, leafy towards the base; Ivs. long as the stem. 

 Pale green or glaucous. Meadows and dry, open woods, common. (0. conoidca 

 Muhl. nee Schk., C. laxiflora ft. Carey, Boott.) 



117 C. retrocurya Dew. $ Spikes 2 4, on long, filiform, recurved peduncles, 

 bracteate, subdense-flowered, short and thick, oblong; perig. ovate, triqu. nerved, 

 obtusish, equaling the ovate, cuspidate glume; st. G 12' high, prostrate; Ivs. 

 radical and wide. Glaucous. Open woods, rare. Has been considered C. digit- 

 lilis, Willcl, but is different. 



118 C. conoidea Schk. ncc Muhl. (B. t. 81.) $ Spikes 23, oblong, or ovate- 

 oblong, remote, erect, rather dense-flowered, bracteate ; per ig. oblong-conic, obtusish, 

 glabrous, nerved, subdiverging, entire at the mouth, a little longer than the ovate- 

 subulate glume ; st. 8 1 2' high ; Ivs. towards the base, shorter than tiie stem. 

 Bright green. Moist, upland meadows, common. 



119 C. grisea Wahl. (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. nee Lam.) 



120 C. juncea Willd. $ Spike short-cylindric, with oblong, obtuse glumes ; i 1 

 spikes 2, rarely 3, filiform, loose and alternate-flowered, pedunculate, long-seta- 

 teous-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 41 0-flowered, 

 oblong, distant, lax and recurved, leafy-bractcd ; perig. ovate, triquetrous, alter- 

 nate, 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.) 



i?. VANVLECKII Dew. Smaller; perig. more remote and smaller. Open, moist 

 woods, common. Has been mistaken for C. oliocarpu, Schk. & Muhl. 



122 C. eburnea 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 subradicnl 

 and bristle-form-leaves. Pale green, common, limestone grounds. S. W. Yt. to 

 Kan. and southward. 



123 C. Washingtoniana Dew. $ Spike erect, slender, with oblong, obtuse, dark 

 brown glumes ; 5 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 Ivs. ; light green. White 

 Mts. N. H., the most common Carex there, forming a turf with the mosses and 



