758 Obder 155.— CYP* RACEME. 



pedicellate, veined, smaller than the oblong-obovate, short mucronate, dark purple-, 

 white-edged glume; culm G to 12' high, longer thau the cauline, but shorter than 

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

 and distinct, allied to C. Baltzellii. 



80 C. virescens Muhl. (B. t. 12.) Spikes 2 — i, oblong, erect, alternate, the lower 

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

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

 eqxial to it; st. 1 — 2f, rather slender; lvs. towards the base. — Whole plant pubes- 

 cent and light green. 



ji. costata Schw. Perig. strongly costate, outer sheaths purplish-brown; lvs. 

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



81 C. triceps Ms. (13. t. 117 in part). Spikes 3, short-ovate, erect, quite near, the 

 upper shoi't-peduncled, lowest leafy-bracted; perig. obovate, obtu?o, roundish- 

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

 ovale acute glume; culm 1 to 2f, triquetrous, scabrous above, with shorter, sub- 

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

 the following, although the two aro united by Boott. 



82 C. hirsiita Willd. (Schk., fig. 172.) Spikes 3, sliort-oblong, thick, alternate, 

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

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

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

 glumes; culm 12 to 18', stout, erect, scabrous above; lvs. and sheaths strongly 

 scab'ro-pubescent, grayish green. — Moist upland meadows, Can. to Penn., and 

 far West 



(i. peduncclata (Ton - .) Spikes oblong-cylindric, pedunculate ; lvs. slightly 

 pubescent ; young glumes much longer than tho perigymum. 



y. ccspidata. (Dew.) Glumes ovate, cuspidate, longer than tho perig. ; lvs., 

 sheaths, and culm very hirsute. — 111. (Vasey). 



83 C. rostivalis Curtis. (B. t. 133.) Spikes 3 to 5, cylindric, slender, rubcreet, 

 loose-flowered, bracteate; h 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 thau the ovate, obtuse, often mucronate glume; 

 culms in tuffs, 1G to 24', slender, with flat, pubescent lvs., and leafy bracts. — Mts. 

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



84 C. Shortiana Dew. Spikes 4 or 5, hmg-cylindric, erect, dense-flowered, tho 

 highest halt-staminate below, the others nearly all fertile, exsert-pedunculato ; 

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

 minutely apiculatc, scarcely longer than the ovate, acute glume ; culm 12 to 30', with 

 long lvs. ; plant strong and line, bright green. — Marshes, Penn. to 111. and farther 

 South. A distinct and beautiful species. 



85 C. oxylepis Torr. (B. t. 131.) Spikes 3 to G, hng-cylindric, erect, exsert-pe- 

 duncle.d, 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 Waul. Spikes about 4, short, cylindric, thick, upper one 

 sometimes wdiolly 0, and sometimes S above and below; pistiliferous oblong, 

 subremote, subsessile, bracteate; perig, ovate-oblong, acutish, or obovate. obtuse, 

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

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

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

 by Schk., Wahl, &c, in tho 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- 

 pressed, glabrous, short-beaked, slight'y bidentate or notched, a little shorter than 

 the dark, oblong glume; culm about 11, with light green foliage and black t pikes. 

 White Mts. and Brit. Am. 



88 C. gracillima Schw. (B. t. 134.) Spikes 3 — 4, long, graceful, sub-looso- 

 flowered, distant, long-pedicellate, recurved iu maturity, bracteate, upper one 



