440 MONOCOTYLEDONOUS PLANTS. 



acute, striate, narrowed at the base, orifice obscurely bidentate, about 

 as long as the ovate cuspidate glume. C. plantaginea MuhL Ell. 



HAB. Woods. Can. to Car. April, May. Culm 1214 inches 



high. Leaves sometimes very broad ; hence this plant has been 



confounded with the preceding. 



63. C. oligocarpd Schk. : fertile spikes 3, pedunculate, few-flower- 

 ed : lower peduncles elongate ; fruit short-ovate, acutely triangular, 

 with a short rostrum, orifice entire, longer than the ovate glume. 



HAB. Rocky woods. Hudson's Bay to Penn. May. Culms in 

 tufls, 6 inches high, slender, with the angles very prominent. 

 Leaves subglaucous. Spikes 5 8-flowered. 



64. C. scabrata Schtc. <$ Torr. : fertile spikes 5, subremote, cylindii- 

 cal, mostly erect, lower ones long- pedunculate ; fruit ovate, with an 

 acuminate rostrum, subventricose, scabrous, orifice oblique and some- 

 what bifid, longer than the ovate-lanceolate ciliate glume. 



HAB. Swamps. N. H. Mass. N. Y. May. Culm 18 inches 

 high. Leaves long and very rough. Plant dark green. 



65. C. conoidea Schk, : fertile spikes 2 3, oblong, remote, rather 

 loose, uppermost subsessile, lower ones on long peduncles ; fruit ob- 

 long-conical, obtuse, recurved at the apex, as long as the awned glume. 

 C. blanda Dew. 



HAB. Woods, &c. Can, to Car. May. Culm 612 inches 

 high ; angles scabrous. Leaves thin and flat. Spikes pale green. 

 A variable species. 



66. C. tetanica Schk. : sterile spike long-pedunculate ; fertile 2 3, 

 remote, rather densely flowered, upper one subsessile, lowest on a long 

 peduncle : fruit ovate-oblong, acute at each end, nerved, subgibbous at 

 the summit, oblique, orifice entire, longer than the ovate mucronate 

 glume. C. granularioides Dew. 



HAB. Wet meadows. Can. to Car. May. Culm a foot high, 

 Spikes very remote. 



67. C. laxiflora Lam. : sterile spike subsessile ; fertile mostly 3, 

 rather loose, remote, pedunculate, erect ; fruit ovate oblong, ventri- 

 cose, obtuse, somewhat shining, longer than the ovate cuspidate glume. 



HAB. Woods, &c. Can. to Geor. May. Culm 1218 inches 

 high. Fruit shining, inflated when mature. 



68. C. granularis MuJd. : sterile spike sessile or short-pedunculate ; 

 fertile mostly 3, remote, cylindrical, dense ; uppermost subsessile, low- 

 est on a long peduncle ; fruit globose-ovate, nerved, orifice entire ; 

 rostrum very short and recurved. 



HAB. Wet grounds. Can. to Penn. May. Culm a foot high. 

 Leaves subglaucous. Fruit ventricose, strongly nerved. 



69. C. sylcatica Huds. : fertile spikes mostly 4, remote, filiform, 

 dense, peduncles nodding ; fruit ovate, rostrate, bifid, twice as long as 

 the ovate mucronate glume. 



