SO TRIANDMA MONOGYNIA 



margin, nearly twice as long as the ovate-lanceolate glune. Beck-. 



Bot. p. 434. ' 



C. Richardi. Mx. Am. 2. p. 170. 



Haresfoot-like Carkx. 



Culm erect, about 2 feet high, triangular, sulcata, scabrous above, Italy to half itj 

 height. Leaves \\\w\\y Longer than the culm, linear-lanceolate, nerved, pale green. 

 Spikelets usually 10 or 12, sometimes l8or 20, sessile, cylindric-ovoU, or oboYoid, 

 approximate, sometimefl clustered into a head ; under the lowest afolhceousfoacl 

 often Longer than the culm, deciduous. Glumes lanceolate, not muci mate, with a 

 •carious margin and green keel, rather mora than half as long as the fruit. Fruit 

 tong-lanceolate, erect, bicuspidate, nerved, mini: in narrow, ciliate-sirrulate. 

 JJub. Swampy places ; West Chester : Pughtown ; frequent. Fl May. Fr. Jul- 



10. C. scoparia, Schk\ Spikelets about ft, ovoid, approximate, clue*, 

 tered, lowest one bracteate, bract deciduous ; fruit lanceolate, slightly 

 ovate at base, erect, snioothish, nerved, longer than the lanceolate acu- 

 minate glume. Beck. Bot. p. 434. 



C. leporina. JLc. +lm. 3. p. 170. .\ot q£ Willd. I J ers. Push, Nutt 

 nor Ell. 

 Besom-like Carkx. 



Culm 1 to 2 feet high, triquetrous, scabrous above, smooth and leafy below. 

 Leaves linear, narrow, acuminate, scabrous on the margin, shorter than the culm. 

 Spikelets generally 5 to 7, sometimes 8 or 10, approximate at the extremity of the 

 culm, often aggregated into a clavate, somewhat nodding head ; the bwest with a 

 deciduous bract) frequently as Long as the head, the others with dtmw-iike bracts 

 terminating in long setaceous punts. Glumes lanceolate, acuminate, keeled, short- 

 er than the fruit, brownish. Fruit ovate -lanceolate, wiih a Long a< urination, dis- 

 tinctly margined but scarcely winged, about Dnerved, bifid at apex and scabrous 

 ab-jve, tawny when mature. 



Bab. Swamps, and wet meadows: common. Fl. May. FV. July. 



Obs. This species has much resemblance to the preceding, and mtybe readily 

 confounded with it by inattentive observers. It is also allied to the following. 



11. C. rtramivea, Willd. Spikelets about 5, roundish-ovoid, ap- 

 proximate, with short bracts at base ; fruit much compressed, ovate, 

 abruptly acuminate, with a broad-winged ciliate-serrate margin, a little 

 longer than the lanceolate glume. Beck, Bot. p. 434. 

 Straw-like, on straw-colored Carkx. 



Culm I to 2 feet high, triquetrous, somewhat scabrous, leafy. Leaves linear- 

 lanceolate, shorter than the culm, lower ones abbreviated ; sheatlis striate, rather 

 loose. Spikelets usually 5 or 6, sometimes only 3 or 4, each furnished with an 

 «vate cuspidate brart at base ; the setaceous points of the two lower bracts some 

 times longer than the spikelets. Glumes slightly mucronate, finally itraw-color 

 ed. Fruit broad-ovate, beaked, bifid at apex, nerved, the mar-in lilated inu 

 wings on each side, with a nerve in each win-. Seed oval, compresstd, puiuicii' 

 late, much smaller than its envelope. 

 Bab. Moist low grounds: West Chester: frequent. Fl. May. Fr. July. 



12, C. rssTUCACSA, Schk. Spikelets 5 to 8, obovoid, most.y approx- 

 imate; fruit ovate, plano-convex, acuminate, with a narrcw-wingei 

 scabrous margin, at length diverging, longer than the ovatc-ianceoiat* 

 glume. Beck y Bot. p. 435. 



F*ST€CA-IJKB CaRBX. 





