442 MONOCOTYLEDONOUS PLANTS. 



HAB. Wet grounds. Can to Geor. May. Culm 18 inches 

 high, scabrous above. Ptant yellowish-green. 



77. C. pseudo-cyperus Linn. : fertile spikes 4, cylindrical, peduncu- 

 late, upper ones subgeminate ; fruit oblong-lanceolate, rostrate, reflex- 

 ed, many-nerved ; apex divaricately bifid. 



HAB. Swamps. Can. to Geor. June. Culm 23 feet high, 

 thick, scabrous at the angles. Spikes 2 inches long, dense. 



78. C. limosa Linn. : fertile spikes mostly 2, ovate or oblong-ovate, 

 pedunculate, somewhat distant, pendulous ; fruit suborbicular-elliptic, 

 compressed, with a very short rostrum, (green,) orifice entire, as long 

 as the ovate mucronate glume. C. lenticularis Mich. Dew. 



HAB. Swamps. Arc. Amer. N. Y. and N. Eng. June. Calm 

 924 inches high, very smooth. Glumes variable in length, 

 ovate or oblong, acuminate or cuspidate. 



79. C. hitchcockiana Dctc. : sterile spike solitary, erect, peduncled ; 

 fertile ones mostly in threes, erect, pedunculate, lower one remote ; 

 flowers few and scattered ; fruit subtriquetrous, oval, inflated, alternate 

 both sides, recurved at the apex, striate, with a short truncate and 

 open beak, nearly equal to the oblong or ovate mucronate scale. 



HAB. Mountain woods. Mass. May. Culm 1C 24 inches 

 high, and with the leaves scabrous-pubescent. Fertile spikes 

 24. Plant dark green. Allied to C'. tazijlora, but distinguish- 

 ed by its fruit and rough pubescence. 



* Slaminiferous spikes 2 or more. 

 1. With 2 stigmas. 



80. C. ccspitosa Linn. : sterile spike subsolitary, (or geminate ;) fertile 

 mostly 3, cylindrical, obtuse, distant, the lower on a short exsert pe- 

 duncle ; bracts strict ; fruit orate, somewhat acute, densely fruited in 

 about 8 rows ; orifice minute, longer than the ovate (black and mar- 

 gined) glume ; leaves spreading. 



HAB. Mountain bogs. Can. to Penn. May. Culm 1218 in- 

 ches high. Lcarcs dark green. Fruit ovate, nerveless, green. 



81. C. crinita Lain. : sterile spikes geminate, (sometimes androgyn- 

 ous;) fertile 4, distant, pendulous, cylindrical, dense ; fruit roundish- 

 ovate, ventricose, slightly rostrate, orifice entire, much shorter than 

 the linear glume. 



b. gynandra S. fy T. : fertile spikes 3, oblong-cylindrical ; fruit 



short-ovate, somewhat longer than the awned glume. 

 HAB. Swamps and meadows. Can. to Geor. June. Culm 



24 feet high. Leaves pale green. Spike 23 inches long. 



Var. b. has the culm about a foot and the fruit yellowish when 



mature. 



82. C. acuta Linn. : sterile spikes 13 ; fertile mostly 3, subpedun- 

 culate, somewhat nodding, cylindrical, remote ; fruit oblong, entire at 

 the orifice, as long as the oblong acute glume. 



HAB. Wet grounds. Can. to Car. May. Culm 2 feet high, 

 acutely triquetrous. Leaves subglaucous. Glumes brown. 



