MONOECIA.— TRIANDRIA. 339 



31. C. stellulata: spikes 3 — 4, rather remote, upper 

 one attenuate at the base, the rest ovate ; fruit 

 ovate, plano-convex, spreading, and at length re- 

 flexed, short-acuminate, scabrous on the margin. 



IIAB. Wet places. May. U. Culm 8—18 in. 

 high ; Jr. broad ; point subentire. 



32. C. scirpoides : spikes 4, ovate, obtuse, approxi- 

 mate, uppermost one clavate ; fruit ovate, bi- 

 dentate, plano-convex, erect, and a little spread- 

 ing, but not reflexed, subcordate, serrulate, longer 

 than the ovate obtuse glume. 



IIAB. Meadows. May. U. Culm 6— 12 in. high, 

 strict ; jr. not re/lexed. 



33. C. curta : spikes about 6, subremote, somewhat 

 cylindric-ovate, tumid, sessile ; fruit short-ovate, 

 plano-convex, rather acute, erect, entire at the 

 point. 



HAB. Wet meadows. May. U . Culm nodding 

 at the end ; glume 7vhitish. 



34. C. tenera: spikes about 5, obovate, rather remote, 

 sessile, attenuate at the base, the lowest bracteate ; 

 fruit ovate, compressed, rostrate, serrulate, longer 

 than the oblong-lanceolate glume. 



IIAB. Moist meadows. May. U. Culm 15—30 

 in. high; spik. brownish. (Is it C. sterilis ?) 



35. C. remota ; spikes alternate, remote ; bracts leafy, 

 very long ; fruit ovate acuminate, bifid, somewhat 

 compressed. 



IIAB. Woods. Pennsylvania? 



2. With 3 stigmas. 



(J. atrata : androgynous spikes 3, pedunculate, 

 crowded, subpendulous in fruit, (black ;) fruit 

 roundish-ovate, with a short beak, bidentate. 

 HAB. High mountains. June. Culm C in. high ; 

 spik. large, black. 



~ * Terminal spikes androgynous; the rest pistilli- 

 ferous ; stigmas 3. 



-7. C. virescens : spikes 3, oblong, erect ; upper one 

 pedunculate, sterile below, the rest fertile, sub- 

 sessile and bracteate ; fruit ovate, obtuse, costate, 

 pubescent. 



