. 286 North American Cyperacea. 
Hab. Wet places, particularly along rivers ; North Caro- 
lina to Florida. Lincolnton, N. C, Mr. Curtis! ; Kentucky, 
Dr. Short and i?r. Peter!; St. Louis and New Orleans, Drum- 
?nond ! ; South Carolina and Georgia, Elliott, Le Conte! 
Obs. Mr. Elliott states that the valves of the "calyx" 
(minute lowest scales) are wanting, but I have generally been 
able to see at least one of them. This little scale, however, 
Nees ab Esenbeck (in a MS. account of some N. American 
Cyperaceae already alluded to) is inclined to regard rather as a 
bracteole than one of the scales of the spikelet, as it appeared 
to stand somewhat remote from the rest ; but in the specimens 
which I examined it was in close contact with the others. 
2. Kyllingia monocephala, Linn. 
Head simple, globose, compact ; spikelets l-flowered, mo- 
nandrous, ovate, acuminate; the two superior scales striate, 
nearly equal, smooth on the sides, serrulate, ciliate on the keel ; 
the two inferior minute ; nut somewhat orbicular ; involucre 3- 
leaved, one of the leaves erect ; the others horizontal. 
K. monocephala, Vahl, enum. 2. p. 379 ; Elliott, sic. 1. p. 54 ; Mulil. ! 
gram. p. 3 (in part) ; Torr. ! fl. 1. p. 43. 
Rhizoma creeping. Culm about a foot high, triquetrous, slender, smooth. 
Leaves much shorter than the culm, one line wide, scabrous on the 
margin towards the summit, abruptly pointed. Head generally inclin- 
ing to one side, always solitary. Involucre sometimes 4-leaved, one of 
the leaves very short. Spikelets very numerous, spreading horizontally. 
Scales 4 ; the 2 lowest very small and difficult to find, one of them (the 
inferior) ovate, the other lanceolate ; the 2 superior scales much larger, 
sjireading and somewhat recurved at the point, membranaceous, 3-nerved 
on each side; the keel green and ciliated with a few minute spiculac. 
Stamen always solitary. Style as long as the nut, 2-cleft. Nut much 
compressed, the breadth nearly equalling the length, very obtuse, 
fulvous. 
Hab. Low moist places ; near Darien, on the Alatamaha, 
Georgia, Dr. Baldwin ! ; and Sunbury in the same state, L. Le 
Conte, Esq.!; Carolina and New Jersey, Muhlenberg. 
