MONOECIA TRIANDRIA. 



C. curia : spikes about 6, subremote, somewhat cylindric-ovate, tumid, 

 sessile ; fruit short-ovate, plano-convex, rather acute, erect, entire at 

 thn point. 



HAB. Wet meadows. May, Ij. ; culm nodding at the end ; glume 

 whitish. 



C. lenera ; spikes about 5, obovate, rather remote, sessile, attenuate at 

 the base, the lowest bracteate ; fruit ovate, compressed, rostrate, ser- 

 rulate, longer than the oblong-lanceolate glume. 



HAB. Moist meadows. May, 7J. ; culm 15 30 inches high ; spike 

 brownish. (Is it C. sterilis ?) 



* * * * Terminal spikes androgynous ; the rest pistiliferous ; 

 stigmas 3. 



C. vire.sce.ns : spikes 3, oblong, erect ; upper one pedunculate, sterile 

 below, the rest fertile, subsessile and bracteate ; fruit ovate, obtuse, 

 costate, pubescent. 



HAB. Dry woods. May. Culm 1 2 feet high ; leaves and sheath 

 pubes. ; plant dull preen. 



C. hirsuta: spikes 3, erect, approximate, densely fruited, upper one 

 ovate-oblong, on a short peduncle ; the rest ovate, subsessile, bracteate ; 

 fruit roundish-ovate, nerved, obtuse, smooth, orifice entire, longer than 

 the ovate acuminate glumes ; leaves and sheaths pubescent. 



HAB. Rocky woods. May. Culm 12 18 inches high ; spike thick , 

 young fr. pubescent. 



C. digitalis : spikes mostly 4, distant, slender, pedunculate, loosely 

 flowered, nodding ; uppermost androgynous, fertile above ; the rest 

 all fertile ; fruit oblong, subtriquetrous, obtuse, smooth, longer than 

 the oblong mucronate glume. 



HAB. Meadows. May. Culm 18 inches high, slender ; spike Jilif. 

 plant pale green. 



C. formosa : spikes 4, oblong, thick, distant, on exsert peduncles, nod- 

 ding, uppermost one sterile at the base ; fruit oblong, triquetrous, 

 somewhat inflated, rather acute at each end ; orifice nearly entire or 

 2-lobed, obscurely nerved, twice as long as the ovate acute glume. 



HAB. Meadows. Culm 1218 inches high ; leaves often subpubes. ; 

 plant yellowish- green. 



***** Staminiferous and pistiliferous spikes distinct. 

 t Staminiferous spike solitary. 



1. With 2 stigmas. 



C. aurea : fertile spikes mostly 3, oblong, loose flowered, subpendu- 

 lous, rather approximate, lower ones pedunculate ; fruit obovatp or 

 pyriform, obtuse, nerved, entire at the orifice, longer than the ovate 

 acute glume. 



HAB. Wet rocks. May June. Culm 3 10 inches high, subprocumb. 

 -fruit dark orange. 



2. With 3 stigmas. 



% Pistiliferous spikes sessile, or with the peduncles inclosed. 

 C. varia : fertile spikes 2 3, approximate, few-flowered, ovate, sub- 



