354 Nrnth American Cyperacea. 
setaceous leaves which are much dilated at the base; 4 of them mtich 
longer than the rest. Spikes 4 — 8, in dense terminal heads, about 3 
lines long, mostly 6-flowered. Scales loosely imbricated, gradually in- 
creasing in length from the summit down, the lowest resembling the in- 
terior leaves of the involucre, pale brown and yellow on the sides, green 
on the keel, the summit produced into a long cuspidate, and somewhat 
spreading point. Stamen solitary. Style long, 3-cleft. JSiit equally 
triangular, whitish, distinctly riigulose transversely, crowned with a 
minute persistent tubercle. 
Hab. Dry sandy soils. Wilmington, North Carolina, Mr. 
Citrtis ! ; South Carolina, Ellioff,!; Georgia, Mahlevherg ! ; — 
July — September, 
Obs. a very distinct species, but resembling in many re- 
spects, an unnamed East Indian Isolepis in my herbarium. It 
is a little remarkable that Muhlenberg should have referred it 
to Dichromena. 
8. Isolepis Warei. 
Culm somewhat terete, filiform, deeply sulcate; spikes 6 — 12, 
ovate, in a crowded terminal head ; base of the involucral leaves 
dilated and cut into capillary segments; scales ovate, obtuse, 
ciliate ; nut triquetrous, depressed at the summit, transversely 
rugose. 
Culm about a foot high, very slender, leafy below, slightly compressed, 
smooth, dotted with red in the furrows. Leaves 2 — 3 inches long, seta- 
ceous, channelled, smooth; sheaths loose, membranaceous, pectinately 
fringed at the orifice. Head of spikes about half an inch in diameter. 
Leaves of the involucre 3 — 4, setaceous, longer than the head; the base 
dilated and ciliately cut nearly to the base. Spikes 3 lines long, many- 
(10 — 15)-flowered, obtuse. Scales broadly ovate or oblong, pale brown, 
nerved, pubescent externally and distinctly ciliate on the margin. Sta- 
mens constantly 3. Style filiform, with 3 long recurved pubescent seg- 
ments. Nut white, very broad at the summit, crowned with a very mi- 
nute black point. 
Hab. West Florida, N. A. Ware, Esq. ! 
Obs. This remarkable species differs from every other 
North American Cyperaceous plant in its fimbriate involucre. 
