764 ORDEH 155. CYPERACE^E. 



leaves. Mts. X. Car. (Buckley) and Va. to Fla. (C. laxiflora, /?. styloflex.% 

 Boott, t. 87). 



133 C. debilis Michx. $ Spike erect, filiform ; 2 spikes 3 4, not very rarely 

 pistillate above, filiform, loose-flowered, flexuous, nodding, remotish, 1 2' long ; 

 perig. oblong-lanceolate, subtriquetrous, alternate, rostrate, bind, glabrous, nerved, 

 nearly twice longer than the ovate-lanceolate glume; t. 1 2f, triquetrous and 

 scabrous above, leafy towards the base. Bright green. Moist woods and mead- 

 ows, common. (C. flexuosa Schk.) 



134 C. arctata Boott. 2 Spikes 3 4, long and slender, loose-flowered, nodding 

 and remote ; perig. ovate, triquetrous; lanceolate or loug-rostrate, subventricous, 

 bifid, glabrous, little surpassing the ovate, inombranaceous, mucronate glume ; st. 

 10 20', scabrous above and leafy below. Pale green. In the same situations 

 as the preceding, common. (C. Sylvatica Dew. Sill. Jour.) 



135 C. Sullivantii Boott. (t. 122). 5 Spikes 3, oblong, erect, cylindric, rather 

 loose-flowered, bracted, the lowest long-pedunculate and sparse-flowered below ; 

 perig. ovate or oval, apiculate, scarcely veined, scabrous-hairy, short-pediceled ; 2 

 glume on the lowest spike obovate, obtuse or emarginate, long-cuspidate, the 

 cusp extending above the fruit ; on the upper spike the cusp is shortened and 

 the oblong glume scarce equals the fruit; culm 1 to 2f, longer than the leaves 

 plant slightly hairy, light green. Columbus, Ohio (Sullivant). 



136 C. Kneiskernii Dew. $ Spikes 3, long-cylindric. rather distant, sublax- 

 ilowered, with recurved peduncles ; perig. ovate, oblong, subtriquetrous, glabrous, 

 terete-conic, rostrate, short-2-toothed, a little longer than the ovate and oblong 

 glume which is obtusish and short-mucronate. Woods, Oriskany and Rome, N. 

 Y. Closely related to C. Sullivantii, but differs materially when mature, in the 

 fruit, glume and long triquetrous achenium. Also, by the same marks, from C. 

 urctata Boott. to which Carey improperly (as mentioned by Boott. t:, 122) re- 

 fers it. 



137 C. capillaris L. $ Spike small; ? spikes 2 3, ovate, oblong, about G- 

 flowered, loose-flowered, long and recurved pedunculate ; perig. oval, short-ros- 

 trate, oblong, oblique at the orifice, longer than the oblong, ovate, obtuse glume ; 

 st. 2 7' high, leafy at the base ; Ivs. narrow, long. Grows in tufts, very deli- 

 cate, 4 to G', pale green. Alpine regions of the White Mts. (Robbins). 



138 C. fulva Good. 2 Spikes 3, oblong, subdense-flowered, erect ; perig. ovate, 

 round, short-rostrate, bicuspidate, smooth, binerved, twice longer than the ovate, 

 dark brown, subacute glume ; st. a foot high or more, triquetrous, leafy towards tho 

 base. Pale green. Near Boston (Greene). (C. binervis Ed. 1 .) 



139 C. laevigata Smith. $ Spike one and erect, sometimes 2 ; 2 spikes 2 3. 

 oblong, bracteate, pedunculate, nodding; perig. ovate-lanceolate, triquetrous, 

 nerved, rostrate, bifurcate, subdense-flowered, about equal to the ovate, cuspidate 

 glume; st. 1 2f, scabrous above, leafy towards the base. Light green. Near 

 Boston (Green). Rare. This and the last probably introduced from Eur. (C. 

 G-reeniana Kd. 1.) 



140 C. flexilis Rudgc. (B. t.. 79). 2 Spikes 24, ovate-oblong, cylindric, nod- 

 ding; perig. ovate, subconic, rostrate, bidentate, scarcely shorter than the ovate, 

 (Mulish, oblong glume ; st. 12 18', orect, striate ; Ivs. short, and shorter below ; 

 Ivs. and bracts ciliate. Bright green. Oneida Co., N. Y. (Gray), and far west- 

 ward. (C. castanea Wahl.) 



141 C. ventista Dew. (B. t, 123.) 3 Spike long, slender, with oblong, obtuse, 

 tawny glumes; 2 spikes 2 or 3, long-cylindric, rather loose -flowered, lowest dis- 

 tant, on a long, exsert stalk, often sparse-flowered, recurved, dark; perig. conic 

 above, tapering below into a pedicel, short-beaked, 2-toothed, veined, rough-pubes- 

 cent, twice longer than the ovate, obtuse (sometimes mucronate) glume ; culm 1 

 to 2f, longer than the linear-lanceolate, light green leaves. S. Car. to Fla. 



142 C. tenax Chapm. (Boott. t., 59.) $ Spike short, cylindric, with oblong, 

 acute glumes ; 2 spikes 2 or 3, ovate or oblong, dense, subsessile, tho lower some- 

 times remote ; perig. oval, triquetrous, some tapering below, conic-beaked or shorter 

 and 2-toothed, finely striate, pubescent, twice longer than tho narrow-ovate, acuto 



