758 Order 155.— CTPSRACE^. 



pedicellate, veined, smaller Uian iTie ohhng-oiovate, short miicronaie, dark purple, 

 white-edged glume; culm 6 to 12' high, longer than the cauliue, but shorter than 

 the radical bright-green leaves. — La. (Drummoud), Ala. (T. M. Peters). Curious 

 and distinct, allied to C. BaltzeUii. 



80 C. Viresoens Muhl. (B. t. 72.) Spikes 2 — 4, ohlong, erect, alternate, the lower 

 subsessile, bracteate ; upper spike very rarely wholly S ; perig. ovate, obtuse, 

 costate, pubescent, longer than the ovate, pubescent and mucronate glume, or about 

 equal to it ; St. 1 — 2f; rather slender ; Ivs. towards the base. — Whole plant pubes- 

 cent and light green. 



§. COSTATA Sohw. Perig. strongly costate, outer sheaths purplish-brown ; Iva 

 numerous and larger. Both are common in open woods and hedges. 



81 C. triceps Mx. (B. t. 117 in part). Spikes 3, short-ovate, erect, quite near, the 

 upper short-peduncled, lowest leafy-braoted ; perig. obovate, obtuse, roundish- 

 triquetrous, pubescent when in flower, roughish, usually much longer than the 

 ovate acute glume; culm 1 to if, triquetrous, scabrous above, with shorter, sub- 

 radical, scabrous Ivs. — N. Car. (Curtis) to Fla. and Ala. Differs considerably from 

 the following, although the two are united by Boott. 



82 C. hlrsvita Willd. (Sohk., fig. 172.) Spikes 3, slwrt-dblong, thick, allernaie, 

 erect, rather near, upper subsessile, lowest pedunculate, aU dense-flowered ; perig. 

 ovate-triquetrous, obtusish, entire at the orifice, veined, very pubescent when young, 

 rough and glabrous in maturity, longer than the ovate, acuminate, glabrous 

 gldmes; ctilm 12 to 18', stout, erect, scabrous above; Ivs. and sheaths strongly 

 soabro-pubescent, grayish green. — Moist upland meadows. Can. to Penn., and 

 far "West. * 



/3. PEDUNOUL.ATA (Torr.) Spikes oblong-cylindric, pedunculate ; Ivs. slightly 

 pubescent ; young glumes much longer than the perigynium. 



y. CUSPIDATA. (Dew.) Glumes ovate, cuspidate, longer than the perig. ; Ivs., 

 sheaths, and cukn very hirsute. — lU. (Vasey). 



83 C. aestivalis Curtis. (B. t. 133.) Spikes 3 to 5, oylindric, slender, suberect, 

 loose-flowered, bracteate ; S glumes oblong, rather obtuse at the base of the upper 

 spike, lowest spike pedunculate ; perig. elliptic, 3-sided, tapering at both ends, 

 glabrous, entire at orifice, longer than tho ovate, obtuse, often mucronate glume; 

 culms in tufts, 16 to 24', slender, with flat, pubescent Ivs., and leafy bracts. — Mts. 

 of N. Car. (Curtis), also on Saddle Mt., Mass. (Dewey). Jl., Aug. 



84 C. Shortiana Dew. Spikes 4 or 5, long-cylindric, erect, dense-flowered, the 

 highest half-staminate below, the others nearly all fertile, exsert-peduneulate ; 

 perig. obovate, obtuse, convex-compressed, tapering at base and subpedicellate, 

 minutely apiculate, scarcely longer than tlie ovate, acute glume; culm 12 to 30', with 

 long Ivs. ; plant strong and fine, bright green. — Marshes, Penn. to 111. and farther 

 South. A distinct and beautiful species. 



85 C. ox;y-lepis Torr. (B. t. 131.) Spikes 3 to 6, long-cylindric, erect, exsert-pe- 

 dunckd, bracteate, the lower remotish and loose-flowered at the base; perig. ob- 

 long, subtriquetrous, glabrous, tapering at either end, 2-lobed or notched at orifice, 

 a little longer than the ovate-oblong, cuspidate, white edged glume; culm 15', erect, 

 rather slender, leafy, pale green; spikes rather dark. — Fla. (Chapman) to Tex. 

 (Torr.) 



86 C. Buxbaumii "Wahl. Spikes about 4, short, oylindric, thick, upper one 

 sometimes wholly S , and- sometimes ? above and below ; pistiliferous oblong, 

 aubremote, subsessile, bracteate; perig. ovate-oblong, acutisb, or obovate, obtuse, 

 subtriquetrous, entire at the orifice, nerved and glabrous, scarcely equal to the ob- 

 long and mucronate glume; st. 10 — 18' high, leafy towards the base. — Common in 

 wet grounds. It is described as sometimes having 2 stigmas in Europe, but placed 

 by Schk., Wahl, &o., in the division having 3. 



87 C. atrata L. Spikes 3 to 5, oblong-ovate, somewhat nodding, tho upper rather 

 near and sessile, lower pedunculate, scarcely sheathed; perig. roundish-oval, com- 

 pres.sed, glabrous, short-beaked, slightly bidentate or notched, a little shorter than 

 the dark, oblong glume; culm about 1^ with light green foliage and black spikes. 

 White Mts. and Brit. Am. 



88 C. graoillima Schw. (B. t, 134.) • Spikes 3 — 4, long, graceful, sub-loose- 

 flowered, distant, long-pedicellate, recurved in maturity, bracteate, upper ono 



