tJ58 North American CijiwraCfi(Z. 



B. leucocephala, Michx.! fl. 1 p- 3?; Vahl, enum. 2. p. 240; Piirsh, 

 Jl. 1.. p. 47; ElUolt! sk. 1. p. 89. t. 3. f. 3; Ram. Sf Schult. syst. 2. p. 

 89; Schult. mant. 2. p. 5. 



Dicliroma leucocephala, Pers. syn. 1. p. 57; Muhl. ! gram. p. J 3. 



Scirpus ceplialotes, Walt. Jl. Car. p. 71. 



Rhyncliospora ochroleuca, Baldw.l Mss, 



Culm. 12 — 18 inches high, smootli, slender. Leaves scarcely a line 

 wide, 3 — 6 inches long, with close naked sheaths, somewhat scabrous on 

 the margin. Incolucre 4 — 7 -leaved ; the leaves dilated and often undu" 

 late at the base, spreading, 2 — 4 inches long. Spikes 8 — 20, compressed, 

 whitish, composed of 8 — 12 scales, most of which are sterile or empty, 

 seldom more than three perfecting their fruit. Scales lanceolate, some- 

 what compressed, but not carinate, rather obtuse. Sta7nens always 3; 

 anthers linear, very long. Style filiform above the tubercle, slender, 

 smooth, cleft about one-third of the way down. Nut semi-ovate, some- 

 what margined, distinctly rugose transversely, brown, a little shining. 

 Tubercle gray or brown, compressed, covering the whole summit of the 

 nut, but not extending down its edges. 



Hab. Damp soils, North Carolina to Florida. Nevvbern, 

 North Carolina, Mr. Croom ! ; Wilmington to the same State, 

 Mr. Curtis! ; South Carolina, Elliott; Macon, Georgia, Dr. 

 Loomis ! ; Florida, Dr. Baldwin! ; New Orleans, T. Drum- 

 mond ! — J iily — October. 



Obs. The Schoenus stellatus of Swartz {iwodr. p. 19.) is 

 commonly referred to this species, but it differs in the base of 

 the involucre being white on both sides, and the tubercle 

 straight (not concave) at the base. 



2. DiCHROMENA LATIFOLIA, Baldw. 



Culm somewhat terete ; leaves broadly linear, slightly con- 

 cave, very long; involucre 8 — 10-leaved, at length of a reddish 

 colour at the base ; nut suborbicular, dull, roughened with 

 minute oblong papillae in interrupted lines ; tubercle com- 

 pressed, conical, somewhat obtuse, semilunar at the base, with 

 the points decurrent on the margin of the nut. 



