S54 Norfh Amcruun CyijeraeecF. 



setaceous leaves which are much dilated at the base; -1 of them mlicil 

 longer than the rest. Spikes 4 — 8, in dense terminal heads, about 3 

 lines long, mostly 6-flowered. Scales loosely imbricated, gradually in- 

 creasing iij 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 sunmiit produced into a long cuspidate, and somewhat 

 spreading ])oint. Stamen solitary. Style long, 3-cleft. JSut e'jually 

 triangular, whitish, distinctly rugulose transversely, crowned with a 

 minute persistent tubercle. 



Hab. Dry sandy soils. Wilmington, North Carolina, 3/r. 

 Citrtis ! ; South Carolina, Elliott! ; Georgia, Malileiihcrg ! , — 

 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 Wakei. 



Culm somewhat terete, filiform, deeply sulcate ; spikes C — 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 sunmiit, transversely 

 rugose. 



Culm about a foot high, very slender, leafy below, slightly compressed, 

 smooth, dotted with red in (he furrows. Leaves 2 — 3 inches long, seta- 

 ceous, channelled, smooth ; sheaths loose, membranaceous, pectinatelv 

 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 — l<'))-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, vtrv 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. 



