sis North American Cyjjeracca. 
dark brown, smooth and somewhat shining, pointed with the sharp base 
tif the style. 
Hab. Slow-flowing streams, and ponds, both in fresh and 
brackish water. Salem, Massachusetts, Dr. PicTcering; Tewks- 
bury pond, near Boston, 5. D. Greene, Esq. ! ; Leverett pond, 
near Amherst, and Deersfield, Massachusetts, Dr. Coolcy &f 
Prof. Hitchcock ! ; Sand-Lake, near Troy, Mr. H. H. Eaton!; 
Princeton, Batsto, and Tom's River, New Jersey ! ; Rocky- 
mountains, T. Drummond! — August — -September* 
Oiis. I first received this plant many years ago from Dr. 
Cooley, of Deerfield, Massachusetts, and described it in the 
work above quoted. It appears to have a wide range to the 
north and west, but it has not, to my knowledge, been found 
south of New Jersey. 
3. SCIRPUS ROSTELLATUS.- 
Culm compressed, filiform^ silicate ; spike ovate-lanceolate, 
acute ; scales ovate, obtuse, loose, somewhat cartilaginous, with 
gt scarious margin ; nut biconvex, very minutely roughened 
with dots ; the apex discoloured, conical-rostrate, rather obtuse ; 
bristles 4 — 6, longer than the nut. 
Culm 12 — 15 inches high, firm and tough, distinctly compressed and 
deeply striate or sulcate. Spilce 3 — 4 lines long, 12 — 15-flowered. 
Scales a little spreading by the protrusion of the ripe fruit, light brown. 
Bristles strong and conspicuously scabrous. Stamens 3; filaments aB 
long as the nut and unusually broad ; anthers linear-oblong. Style 3- 
cleft. Nut very convex in front, light brown, shining, bi'it somewhat 
tineven and roughened under a lens; the apex discoloured, and at first 
view appearing like a tubercle. 
Hab. Penn-Yan, Yates county, New-York, Dr. Saftiuell! ; 
South Carolina, Dr. Walsh ! 
Obs. Nearly allied to S.multicanUs, Eng. bat. 1. 1187, which 
Smith (in Efigl. Flora, 1. p. 64) and N. ab Esenb. (in Linnaa, 
d^ p. 294) refer to Eleocharis, and which some European bo- 
