MONOECIA.— TRIANDRIA. 347 



UAB. Swamps. June. Culm 2 — 4ft.high;leav. 

 pale gr. ; spik. 2 — 3 in. long. 



p. gynandra : fertile spikes 3, oblong-cylindrical ; 

 fruit short-ovate, somewhat longer than the awned 

 glume. 



HAB. Meadows. Culm 12—1 4 in. high ; fr. yel- 

 lowish when mature. 



77. C. acuta : sterile spikes 1 — 3 ; fertile mostly 3, 

 subpedunculate, somewhat nodding, cylindrical, 

 remote ; fruit oblong, entire at the orifice, as long 

 as the oblong acute glume. 



HAB. Wet meadows. Culm 2 ft. high, sharply 

 triquetr. ; glume br. ; Jr. nerveless. 



2. With 3 stigmas. 



78. C. Barraitii : sterile spikes subgeminate ; fertile 



about 3, oblong-cylindrical, sterile at the summit, 

 nodding, distant ; fruit oblong, subtriquetrous, 

 somewhat scabrous, orifice subentire ; a little 

 shorter than the ovate lanceolate glumes ; leaves 

 glaucous. 

 HAB. Sea coast. Culm 12 in. high; leav. very 

 smooth ; glum, dark brown. 



79. C. trichocarpa : sterile spikes 2 — 1, pedunculate, 



(sometimes sterile at the summit ;) fertile 3, dis- 

 tant, pedunculate, erect, oblong-cylindrical ; fruit 

 ovate-lanceolate, acuminate, bicuspidate, hairy, 

 longer than the ovate acuminate glume. 

 HAB. Swamps. Culm 3 ft. high; fertile spik. 

 thick, subcylindr. ; pedunc. oppress. 



80. C. filiformis : sterile spike geminate; fertile 2, 

 ovate-oblong, sessile, distant ; fruit elliptical, vil- 

 lous, bifurcate, as long as the ovate-lanceolale 

 somewhat awned glume ; leaves convolute. 



HAB. Bogs. Culm 2— 3 ft. high, slend. ; rad. 

 Uav. 2— 3 ft. long, filif above. 



8 1 . C. vrsicuria : sterile spikes 3; fertile mostly 2, 



pedunculate, cylindrical ; fruit oblong, inflated. 

 acuminate-rostrate, hicuaptcfate, longer than the 

 lanceolate glume ; culm acutely triquetrous. 

 1 1 A B. Wet meadows. May. Culm 2 ft. high ; spik. 

 dense, 2 — 3 in. long. 

 Campvifacea: sterile spikes 3; fertile 2- 



