5f^ CL.X. CYPERACEiE, Carex. 



F. Terminal spike androgynous^ 'pistillate at the summit ; the othe' pis- 



tillate. 



61. C. viREscENs. Muhl. 



Spi/ces 2 -4, oblong:, erect, alternate, tke lower subsessile, bracteate ; upper 

 spike very rarely wholly ^ ; perig. ovate, obtiise, costate, pubescent, longe- than 

 the ovate, pubescent and mucronate glume, or about equal to it; si. 1 — '^, high, 

 rather slender ; Ivs. towards the base.— Whole plant pubescent and light ^reen. 

 /?. costata. Schw. Perig. strongly costate, outer slieaths purplish-brow)\ ; Ivs. 

 Dumenms and larger. — Both are common in open woods and hedges. 



62. C. HIRSUTA. 



Spikes 3, shoil-oblong, thick, alternate, erect, the lower subsessile anc' long- 

 bracteate, all approximate and densely flowered ; perig. ovate, triquetrous, 

 nerved, obtuse, entire at the orifice, glabrous in maturity, about equal to the 

 orate, acuminate, glabrous glume ; st. 12 — 20' high ; Ivs. and sheaths reti jrsely 

 pubescent ; upper spike very rarely all ,J'. — Moist upland meadows. Coiamon. 

 /?. pedunculata. Torr. Spikes oblong-cylindric, pedunculate; Ivs. slightly 

 pubescent. — Common. C. triceps (M;;.) much resenibles this, — is not jiubes- 

 cent but glabrous. 



63. BuxBAUMii. Wahl. 



Sfikes about 4, cylindric, thick, upper one sometimes wholly cf, and- 

 sometimes J^ above and below; pisiillifermis oblong, subremote, subsessile,. 

 bracteate ; perig. ovate-oblong, acutish, or obovate, obtuse, subtriquf trous,. 

 entire at the orifice, nerved and glabrous, scarcely equal to the oblong an 1 mu- 

 cronate glume; st. \Q — 18' high, leafy towards the base. — Common ia wet 

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

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



64. C. GRACILLIMA. Schw. 



Spikes 3 — 4, long, graceful, sub-loose-ffowered, distant, long-pedic dlate,^ 

 recurved in maturity, bracteate, upper one rarely all (^; perig. oblong, : ique- 

 trous, obtuse, oblique at the orifice, slightly 2-lobed, longer than the obiorg and 

 obtuse and short-awned glume ; st.' often 2f high, reddish towards the base, 

 leafy and subprocumbent, pale- green. — Common in damp meadows. 



65. C. FORMOSA. Dew. 



Spikes 3 — 4, oblong, short and thick, distant, 1-sided, on a long and slen- 

 der peduncle, recurved; perig. oblong, triquetrous, subinflated, acutish at either 

 end, nearly entire or 2-lobed at the orifice, twice longer than the ova e and 

 acute glume; st. 1 — 2f high, 3-sided, dark brown towards the base, yefowisb 

 bright green.— Common in wet meadows. 



66. C. Davisii. Torr. (C. Torreyana. Dew.) 



Spikes 4, oblong, cylindric, subsparsely flowered, remote, pedicellate, pen- 

 dulous in maturity; perig. oblong-conic, subinfiated, subtriquetrous, nerved, 

 acutish, short-rostrate, 2-lobed at the orifice, glabrous towards maturity, about 

 equaling the oblong, scabrous-awned glume; st. 1 — 2f high, triquetrous, sca- 

 brous above, with leaves equaling it ; lis. and sheaths pubescent, sometim s but 

 very little, light green^^First found on the alluvial meadows of the f^ousa- 

 ionic in Ma.ss., Dewey. Sometimes nearly pubescent. 



G. Staminate spike single. 



1. Pistillate spikes short and sessile or nearly sessile. Pcryginia radiating or 



diverging. 



67. C. VARiA. Muhl. 



(^ Spike erect, short or subelongated ; 9 spikes 3, ovate, sessile, rather 

 near, bracteate, few-flowered; perig. ovate or sub-globose, subtriquetrous, acu- 

 minate-rostrate, bifid, scabro-pubescent, about equal to the ovate, acuminate 

 glume; .s-,'. 6 — 15' high, erect, slender, purple towards the base. Pale green. — 

 Dry woods and hedges ; common. 



(i. pedicellafa. Dew, hns pistillate spikes ovate-oblong, short-pedicellate, 

 erect, loose-flowered ; perig. more numerous. — Grows in the same situations. 



