212 Monogrctjjh of North American Rhynchospm-cB. 



turn sequante ; setis retrorsum hispidis, nucem plus duplo 

 longioribus. 



Culm trians;ular, 3 — 4 feet high. Leaves linear, smooth, somewhat sca- 

 brous on the margin and keel. Panicles numerous, approximate, so 

 as to appear like a single elongated, compound panicle ; often two or 

 more from the same sheath. Peduncles compressed, scabrous, nearly 

 erect, much longer than the sheaths ; the lower ones longest. Bracts 

 filiform-setaceous, with scabrous margins, equal to the panicles. 

 Flowers in small fascicles, crowded on the ultimate divisions of the 

 panicles. Spikelets ovate-lanceolate. Glumes lanceolate, rather ob- 

 tuse, with a short mucro. Bristles 6, conspicuously retrorsely hispid, 

 more than twice the length of the nut. Stamens 3. Style slightly 

 bifid. Nut smooth, obovate, lenticular, broad at the summit, sub- 

 attenuate at the base. Tubercle subulate, compressed, as long as the 

 nut. 



Hab. New Orleans, T. Drummond, (in Herl. Terr. ); Mid- 

 dle Florida; Dr. Chapnaji. 



22. Rhynchospora oligantha. 



R. culmo subaphyllo, filiformi ; spiculis paucissimis, ovato- 

 oblongis ; setis sursum hispidis, infra medium plumosis, nu- 

 cem oblongiuscule obovatara (minutissime exasperatam,) 

 paulo superante ; tuberculo brevissimo, conico. 



Culm filiform, 6 — 12 inches high, nearly leafless. Spikelets 1 — 4, 

 two to four lines long, solitary or in twos or threes on a slender, sca- 

 brous peduncle, surrounded by a single filiform bract, which appears 

 like a continuation of the culm : sometimes there is a single, remote, 

 long-pedunculate, lateral spikelet. Glumes broad-ovate, acute. 

 Florets raised on a naked, articulated stipe, about a line in length. 

 Bristles 6, as long as the nut and tubercle, hispid upward, plumose 

 below the middle. Stamens 3. Style bifid. Nut to the naked eye 

 nearly smooth, (minutely roughened under a powerful lens,) obovate- 

 oblong, subterete, with a very short acumination supporting a conic 

 tubercle, scarcely ^ the length of the nut. 



Hab. Fayetteville, N. Carolina. Schweinitz {sub nam. R. rari- 

 floroe) ; near Wilmington, N. Carolina, Mr. Curtis. 



