CTPERACE^. 



419 



B. grjnandra (Deio. C. gynandra Seine.) ; pistillate spikes pendulous, thicker 

 in'the midst; glumes about twice as long as the perigynia. 



49. C. PALEACEA. SJireh. Sc/i I,: Cig. 12'o. 



Pistillate spikes ahoat 4, \ong-cyVindTic, densely noweved, recurved, with a 



long reclined peduncle ; perig. ovate, suborbicular, obtusish, emargmate at the 



orifice, convex both sides; glumes terminated by a long, serrate point more 



than thrice the length of" the perigynia ; stem 20—42 inches high, recurved, 



rough-edged, pale-gieen. Common in dry grounds. 



II. STIGMAS THREE. 



D. Spikes andkogynous. Moncecious. 



1. Stamens at the summit. 



»• Spike single. 



50. C. POLYTRICHOIDES. Muli. C. microstachya. Mx. 

 Spike oblong, terminal; perig. 3—8, oblong, alternate, subtriquetrous, 



glabrous, einarginate, twice longer than the ovate and obtuse, and rarely 

 mucrona'te glume ; stem 4—12 inches high, veiy slender, with setaceous and 

 Bubradical leaves. Common in wet and cold grounds. 



51. C. LENEOGLOCHIN. Ehrltt. C. pauciflora. Lightfoot. 

 Spike, about 4-flowered, with 1 or 2 staminate flowers at the apex; perig. 



lanceolate, subtriquetrous and tapering, much reflexed, twice longer than 

 the oblong-lanceolate glume; stem 3—8 inches high, with subradicaland 

 linear leaves. In Ashfield and Hawley, Mass., in a marsh. Porter. 

 b. One or more radical peduncles with a single spike. 



52. C. PEDUNCULATA. Muh. 



Spikes about 5, 3-sided, distant, long, recurved, pedunculate ; perig. obovate, 

 triquetrous, recurved at the apex, couinionly glabrous, a little longer than the 

 oblong or obovate, mucronate glume; stem 4—12 inches high, triangular, 

 ratherprocumbenl; s/a?ne«5 sometimes removed a little from the pistillate 

 spike. Common in woods; flowers early in the spring. 

 3. Spikes staminate at the base. 

 c. Spikes one, often more. 



53. C. sqUAMOSA. L. 



Spikes 1 — 4, oblong, cylindric, oblusr, upper one attenuated below at first 

 by the decurrent staminate flowers, all very densely flowered; perig. ovate, 

 Bubo-lobosp, long-rostrate. 2-toothed, horizontal, glabrous and subsquarrose, 

 longer than the lanceolate glume; stem- 1—2 feet high, slender for the large 

 spike or spikes ; lower spikes pedunculate. Large and fine. It is C. typliirea 

 Mx. when only o?ie spike is present. 



/3. C. tijphinuides (Srlnc.) ; spikes 2, the lower on a very long peduncle, and 

 both longer and smaller. 



E. Spikes Dicecious. 



54. C. scirpoi'dea. Mx. 



Spike oblong, cylindric, acutish ; sUiminatc glume oblong, obtusish ; pr.rig. 

 ovate (oval),subrostrate, pubescent, longer than the ovate, acutish glume, 

 Bcarious on the edge ; stem 4 — 10 inches high, erect ; leaves flat and long. 

 White Mts., N. H. Oakes. 



F. Tekminal Spike andkogynous, pistillate at the summit; the other 

 pistillate. 



55. C. VIRESCENS. Muh. 



Spikes 2—4, oblong, erect, alternate, the lotcer sub-sessile, bracteate ; upper 

 spike very rarely wholly staminate ; perig. ovate, obtuse, costate, pubescent, 

 longer than the ovate, pubescent and mucronate glume, or about equal to it; 

 iteiJi 1 — 2 feet high, rather slender ; leaves towards the base. Whole plant 

 pubescent and light green. 



/3. costata {S liw.) ; perig. strongly costate, outer sheaths purplish brown ; 

 haves numerous and larger. Both are coairaon in open woods and hedges. 



