CVPERACEJE. 



428 



bifurcate, glabrous, a little longer than the oblong, mucronate glume ; stem 

 2 — 3 feet high, scabrous above, erect and large, with long and large leaves 

 and bracts. Light green. Marshes. Common. 

 118. C. ripa'ria. Gooden. 



Staminate spike 3 — 5, oblong, thick, erect, sessile ; pistillate 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; stem 2 — 3 feet high, scabrous above, 

 leafy below. Bright green. 

 110. C. OLiGOSPKRMA. Mx. Oakesiana. Dew. 



Staminate spikes several, sometimes one, erect, slender, long-cylindric, with 

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

 distant; pcrig. fevi', ovate, inflated, acute, nerved, short-rostrate, entire at the 

 orifice, glabrous, a little longer than the ovate lanceolate glume ; stem 1 — 2 

 feet high, scabrous above, leafy below ; leaves involute and rush-like. Light 

 green. About the lakes of N. Eng. and N. Y. Abundant in marshes of Mich. 



120. C. VESICAKIA. L. 



Staminate spikes about 3, erect, oblong ; pistillate 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-lanceoiate glume ; s/c?« about 2 feet high, shorter than 

 the leaves. Bright green. Marslies. JNot common. 



/3. niriculata (Dew. C. ntriculata. Boott ) ; perig. oblong-elliptic, nerved, 

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

 nwned glume. Marshes, with the other. 



121. C. ampulla'cea. Gooden. 



Staminate spikes2 — 4, oblong, cylindric, erect ; pistillate spikes 2 — 3, long- 

 cylindric, erect, close-flowered, short-pedunculate, sometimes staminate above ; 

 perig. subglobose, inflated, diverging, nerved, glabrous, setaceous, rostrate, 

 bifurcate, little longer than the lanceolate glume ; stem 2 — 3 feet high, 

 obtusely triquetrous, leafy. Light green. Marshes. Common. 



122. C. moni'le. Tuckerman. 



Staminate spikes 2 — 4, long, slender, cylindric, with a long lanceolate glume ; 

 pistillate 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 ; stem 15 — 30 inches 

 hio-h, erect, with long leaves and bracts. Bright green. Marshes ; not com- 

 mon. Moie loose-flowered and fruit longer than that of C. visicaria. L. 



123. C. bulla'ta. Schk. 



Staminate spikes 3, erect, slender, cylindric, with oblong-lanceolate glumes ; 

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

 inflated, glabrous, costate, with a long scabrous beak, bifurcate, longer than 

 the lanceolate glume ; stem 20 — 30 inches high, rather slender, triquetrous, 

 scabrous above, leafy and shorter than the leaves. Glabrous, light green. 

 In wet meadows. Common. 



124. C. TucKERMA.Ni. Dew. 



Staminate spikes 2 — 3, cylindric, lower ones sessile and short, with an 

 oblong, acutisli glume ; pistillate spikes 2 — 3, oblong, cyhndric, thick and 

 large, pedunculate, subloose-flowered; perig. inflated, ovate, large, conic, 

 costate, bifurcate, glabrous, nerved, twice longer than the ovate-lanceolate 

 glume ; stem about 2 feet high, erect, scarcely scabrous ; bracts and haves 

 long, not wide ; light grcen.^ Wet places in meadows, common, and has 

 been ranked under C. hullata. 



125. C. MiRATA. Dnc. C. arista. Z)c2c. not of K. £r. 

 Staminate spikes 2 or more, long cylindric ; pistillate spikes about 2, long- 

 cylindric, pedunculate, subdense-flowercd,subercct ; pcrig. ovate, conic, long 



