MOx\OECIA.— TRIANDRIA. 343 



1IAB. Swamps. June. Cidm 2 — 3 ft. high, thick 



and leafy ; spike very thick. 

 B. polyslachia : fertile spikes 5, oblong-cylindric, 



lowest one remote, on a long peduncle. 

 HAB. Swamps. Culm 2 ft. high; spik. 2—3 in. 



long. 



54. C. folliculata : sterile spike pedunculate; fertile 

 2, (often solitary,) roundish, approximate, few- 

 flowered, upper one sessile, lower one short pe- 

 duncle ; bracts leafy ; fruit ovate, acuminate- 

 rostrate, ovate, reflexed and diverging, bicuspi- 

 date. 



1 1 AB. Swamps. June. Culm 18 in. high; spik. 

 6 — 10-jfl. ,• pi. dark green. 



55. C. Xanthophysa : fertile spikes 3 — 4, ovate, very 

 remote, pedunculate, few-flowered ; fruit oblong- 

 conical, somewhat inflated, striate, horizontal 

 when mature, acute, bifid, longer than the ovate 

 acuminate glume. 



HAB. Swamps. June. Culm 2 — 4ft.high,slend.; 

 fr. i in. long; pi. yell.-gr. 



56. C. subulata : sterile gpikes short-pedunculate ; 

 fertile mostly 4, ses-ile, or with included pedun- 

 cles, very remote, few-flowered, sterile at the 

 apex ; fruit subulate, reflexed, much longer than 

 the lanceolate glume ; culm very slender. 



HAB. Cedar swamps. July. Culm 2 ft. high ; 

 spik. about 4-Jl. 



57. C. ulpestris : fertile spikes 3, 5-flowered, the 2 



uppermost approximate and sessile, the lowest 

 radical, on a long peduncle ; fruit obovate-oblong, 

 triquetrous, scarcely rostrate, subpubescent, ori- 

 fice oblique, as long as the oblong glume. 

 HAB. Woody hills. Culm 6 in. high. 



§§ Pistilliferous spikes on exsert peduncles, partli 

 sheathed at the base. 



0, alba ; sterile spike pedunculate; fertile 2—3, 

 pedunculate, about 5-flowered ; fruit obovate, 

 with a short rostrum, obliquely truncate ; sheath 

 at the base of the culm hyaline, leafless. 

 HAB. Limestone hills. June. Culm 1 — 10 in. 

 high, slend. ', bracts zih. ; fr. dark. 



