208 Monograph of North American Rhynchospora. 



Hab. "Near the sea shore, Fort George Island, East Flo- 

 rida, April, 1817." Dr. Balduin. 



Obs. The habit of this remarkable species is very similar to 

 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, 

 lasvi, nigrescente, tuberculo obtuse conico confluente; setis 

 caducis, sursum hispidulis, nucem subaequante. 



Schoenus macrocarpus, Raldw. Mss. et Herb.! 



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 wide ; cauline ones few and short. 

 Corymbs axillary and terminal, exsertly pedunculate, few and loosely 

 flowered. SpiJcelets 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, v^^ho referred 

 the plant to the genus Schoenus. He remarks, however, that 

 it only differs from Rhynchospora in wanting the brisdes^ 



17. Rhynchospora pycnocarpa. 



R. corymbis sparsifloris ; spiculis turgido-ovatis ; nuce Isevi, 

 ovata, tumida, vertice crasso, tuberculo acutiusculo, brevis- 

 sime conico, ampliore ; setis denis, caducis, sursum hispidu- 

 lis, nucem subaequante. 



