CYPERACE^E. 423 



3. KYLLINGIA. Linn. 



Flowers distinct, disposed in a roundish, sessile, subimbri- 

 cated spike. Glumes 2-valved, 1-flowered. PalecR 2, longer 

 than the glumes. Triandria. Monogynia. 



K. monoccphala Linn. : stem filiform, 3-angled; head globose, sessile; 

 involucre 3-leaved, very long. 



HAB. N. J. to Geor. June. If. Root creeping, fctoloniferous. 

 CM^TO 3 12 inches high. Head always single. Supposed to 

 be distinct from the foreign plant. 



DlV. II. SciRPE^. 



4. FIMBRISTYLIS. Vahl. 



Spikelets imbricated in all directions, all fertile, at length 

 caducous. Style bulbous at base, jointed, ciliate. Stigmas 

 2 3. Seed naked at base. Triandria. Monogynia. 



1. F. ferruginca Vahl.: culm compressed, scabrous above ; involu- 

 cre unequally ciliate ; spikes lanceolate, acute, nearly terete ; glumes 

 pubescent. F. puberulum VahL Pursh. Scirpus ferrugineus Linn- 

 Muhl. Torr. 



HAB. Wet meadows. N. Y. to Car. Aug. 1$..Culm 2 inches 

 to 2 feet high, varying with the soil. Umbel mostly simple, 

 3 4 rayed. Style 2-cleft, fimbriate. Seed naked at base. 



2. F. spadicea Vahl. : culm compressed, nearly naked, umbel termi- 

 nal ; involucre rigid, 2 leaved, one of the leaves longer than the um- 

 bel ; leaves subterete ; spikes ovate- oblong, terete. Scirpus spadiceue 

 Linn. Muhl. Torr. 



HAB. Salt marshes. N. J. to Car. Aug. 'If. Culms cespi- 

 tose, 23 feet high, compressed above. Spikes closely imbri- 

 cate, brown. Style 2-cleft, distinctly fimbriate. Seed yellowish. 



3. F. coarctata Schw. : culm filiform ; umbel compound, crowd- 

 ed ; spikes small, linear-lanceolate ; involucre setaceous, with one of 

 its leaves longer than the umbel ; leaves filiform, concave on one side. 

 Scirpus coarctatus Ell. & castaneus Muhl. 



HAB. Sandy soils. N. J. Schweinitz. S. to Car. Sept. U 

 Culm filiform, a foot high. Umbel 3 4-rayed. Glumes with a 

 short fringe on the margin. Style deeply 3-cleft. 



4. F. cylindrica VahL : spikes cylindric, very obtuse ; involucre 

 about 1 -leaved, rigid, as long as the simple umbel. 



HAB. Quaker's Bridge, N. J. Schweinitz. If. 



5. SCIRPUS. Linn. 



Glu$ies imbricating the spike on all sides, one or two of the 

 outer ones occasionally without flowers. Seed or nut naked, 

 or with bristles at its base. Triandria. Monogynia. 



