208 Monograph of North American Rhynchospora. 
Hab. "Near the sea shore, Fort George Island, East Flo- 
rida, April, 1S17." Dr. Baldwin. 
Obs. The habit of this remarkable species is very similar ta 
that of R. corniculata in a young state. Dr. Baldwin re- 
marks of this species, that the bristles equal the stamens in 
number. I have seen only six in the specimens which I 
have examined. 
16. Rhynchospora megalocarpa. 
R. hexandra ; corymbis sparsifloris ; nuce ovata, lenticulari, 
laevi, nigrescente, tuberculo obtuse conico confluente; setis 
caducis, sursum hispidulis, nucem subaequante. 
Schoenus macrocarpus, Baldw. Mss. et Herh.! 
Culm glabrous, somewhat triangular, 4 feet high. Leaves rigid and coria- 
ceous, pungently acute, carinate, smooth; radical leaves numerous, 
1 — 2 feet in length, 3 — 5 lines Avide ; cauline ones few and short.. 
Corymbs axillary and terminal, exsertly pedunculate, few and loosely 
flowered. Spikelets about i of an inch in length, ovate, tumid, sessile 
or on short pedicels. Glumes obtuse, the inner ones mucronate. 
Bristles 6, caducous, minutely scabrous upward, equalling the nut. 
Stamens 6. Nut (including the tubercle,) 2 — 3 lines in length, smooth 
and shining, becoming black with age, round-ovate, and strongly con- 
vex on both sides. Tubercle turgidly conic, much shorter than the 
nut, with which it appears to be confluent. 
Hab. Fort George, East Florida, Dr. Baldwin. 
Obs. The bristles in this species are so exceedingly caducous 
that they escaped the notice of Dr. Baldwin, who referred 
the plant to the genus Schcenus. He remarks, however, that 
it only differs from Rhynchospora in wanting the bristles. 
17. Rhynchospora pycnocarpa. 
R. corymbis sparsifloris ; spiculis turgido-ovatis ; nuce Isvi, 
ovata, tumida, vertice crasso, tuberculo acutiusculo, brevis- 
sime conico, ampliore ; setis denis, caducis, sursum hispidu- 
lis, nucem subaequante. 
