592 CLX. CYPERACEiE. Carex. 



the ovate-lanceolate, awned glume ; st. 12 — 24' high, nearly round below, with 

 flat, linear-lanceolate leaves and bracts. — Glabrous and yellowish-green. Wet 

 places and marshes. Common. 



129. C. FiLiFORMis. Gooden. 



^ Spikes 2 — 3, with oblong glumes ; 9 spikes 2 — 3, ovate, oblong, short- 

 cylindric, close-flowered, remotish, erect; perig. ovate, villose, short-rostrate, 

 bifurcate, about equaling the ovate, acute glume ; st. 20 — 30' high, erect, slen- 

 der stiff", with convolute leaves and bracts. — Pale green. Marshes. Common. 



130. C. LACUSTRIS. Willd. 



(^ Spikes 3 — 4, erect, sessile ; 9 spikes 2 — 3. erect, oblong, cylindric, 

 short-pedunculate ; perig. ovate-oblong, tapering or lanceolate, bifurcate, gla- 

 brous, a little longer than the oblong, mucronate glume ; st. 2 — 3f high, sca- 

 brous above, erect and large, Avith long and large leaves and bracts. — Light 

 green. Marshes. Common. 



131. C. RiPARiA. Gooden. 



(^ Spike 3 — 5, oblong, thick, erect, sessile ; 9 spikes 2 — 3, erect, oblong, 

 often long-cylindric ; perig. ovate-elliptic, contracted into a short, bifurcate 

 beak, glabrous, about equaling or shorter than the ovate, mucronate, or oblong- 

 lanceolate glume ; St. 2— 3f high, scabrous above, leafy below. — Bright green, 



132. C. oLiGospERMA. Michx. (Oakesiana. Deu\') 



(^ Spikes several, sometimes one, erect, slender, long-cylindric, with 

 an oblong obtusish glume ; 9 spikes 1 — 3, ovate, globular, sessile, distant ; 

 perig. few, ovate, inflated, acute, nerved, short-rostrate, entire at the orifice, 

 glabrous, a little longer than the ovate-lanceolate glume ; st. 1 — 2f high, sca- 

 brous above, leafy below ; Ivs. involute and rush-like. — Light ^^een. About 

 the lakes of N. Eng. and N. Y. Abundant in the marshes of Micii. 



133. C. VESICARIA. 



(^ Spikes about 3, erect, oblong; 9 spikes 2 — 3, cylindric, erect, dense- 

 flowered, alternate, long-bracteate ; perig. ovate, oblong-conic, terete, inflated, 

 rostrate, nerved, diverging, glabrous, bicuspidate, nearly twice longer than the 

 oblong-lanceolate glume ; st. about 2f high, shorter than the leaves. — Bright 

 green. Marshes. Not common. 



(i. utriculata. Dew. (C. utriculata. Boott.) Perig. oblong-elliptic, nerved, 

 cylindric-rostrate, bicuspidate, more or less longer than the lanceolate, sca- 

 brous-awned glume. — Marshes, with the other. 



134. C. AMPULLACEA. Gooden. 



^ Spikes 2 — 4, oblong, cylindric, erect; 9 spikes 2 — 3, long-cylindric, 

 erect, close-flowered, short-pedunculate, sometimes ^ above ; perig. subglobose, 

 inflated, diverging, nerved, glabrous, setaceous, rostrate, bifurcate, little longer 

 than the lanceolate glume ; st. 2 — 3f high, obtusely triquetrous, leafy. — Light 

 green. Marshes. Common. 



135. C. MONiLE. Tuckcrman: 



(^ Spikes 2 — 4, long, slender, cylindric, with a long, lanceolate glume ; 9 

 spikes 2, long, cylindric, short-pedunculate, subloose-flowered, erect ; perig. 

 ovate, long-conic, subtriquetrous, inflated, rostrate, bicuspidate, more than 

 twice longer than the oblong-lanceolate glume; st. 15 — 30' high, erect, with 

 long leaves and bracts, — Bright green. Marshes. Not common. More loose- 

 flowered and fruit longer than that of C. visicaria. L. 



136. C. BULLATA. Schk. 



(^ Spikes 3, erect, slender, cylindric, with oblong-lanceolate glumes ; 9 

 spikes 2 — 3, rather long, cylindric, nearly erect ; perig. ovoid-globose, inflated, 

 glabrous, costate, with a long, scabrous beak, bifurcate, longer than the lance- 

 olate glume ; St. 20 — 30' high, rather slender, triquetrous, scabrous above, leafy 

 and shorter than the leaves. — Glabrous, light green. In wet meadows. Com- 

 mon. 



137. C. TucKERMANi. Dew 



(^ Spikes 2 — 3, cylindric, lower ones sessile and short, with an oblong, 

 acutish glume ; 9 spikes 2 — 3, oblong, cylindric, thick and large, pedunculate, 

 subloose-flowered ; perig. inflated, ovate, large, conic, costate, bifurcate, gla- 



