378 North American Cyperacea. 
(excl. syn. Michx.) ; Pursh, fl. 1. p. 46. (excl. syn. Michz.) ; Elliott, 
$k. 2. p. 559 ; Darlingt I fl. Cest. ed. 2. p. 26 ; Beck. hot. p. 430. 
Culm erect, 9 — 18 inches high, triquetrous, striate, slightly scabrous 
toward the summit. Leaves scarcely a line wide, nearly smooth ; the 
sheaths clothed with a short pubescence. Fascicles 2 — 3, composed of 
about three pairs of spikelets ; the lateral ones on long slender peduncles. 
Brads foliaceous ; the inner ones ciliate. Spikelets in pairs ; the 
sterile few-flowered, sessile in the second scale of the fertile spikelet ; 
the scales membranaceous, acute, each covering three filaments : fer- 
tile spikelet of 3 coriaceous, ovate, mucronate scales, which are some- 
what ciliate on the keel. Between the sterile spikelet and the fertile 
scale which embraces it is a filiform process, or abortive pedicel. Style 
3-cleft. Nut white, shining, roughened with minute prominences. At 
the base there are a number of capitate stipitate warts, or processes, pro- 
jecting downward ; the little heads appearing pulverulent under a strong 
lens. Perigynium a narrow somewhat undulate ring, upon which, and 
between it and the base of the nut, £ire 6 roundish cellular bodies like 
those of S. oligantha. 
Hab. Serpentine hills, near west Chester, Pennsylvania, 
Dr. Darlington ! ; swamps, in the same state, Muhlenberg! ; 
Walpole, New Hampshire, J. Carey, Esq.!; damp pastures 
and pine barrens, South Carolina, Elliott. 
Obs. In my New Hampshire specimens, the little rounded 
bodies of the perigynium are closely approximated in pairs, so 
that they seem to be 2-lobed. 
jS. Leaves, sheaths and bracts smooth ; nut somewhat 
wrinkled transversely, faintly marked with longitudinal lines j 
processes of the perigynium 3, dilated, obscurely 2-lobed. 
Hab. Southern States, J>?-. Baldwin!; North Carolina, 
Mr. Curtis! 
5. SCLERIA CILIATA, Michx. 
Culm erect, nearly naked ; leaves channelled, pubescent 
above ; fascicle subsolitary, terminal ; bracts and scales ciliate ; 
nut subglobose, verrucose ; the warts at the base stipitate ; 
perigynium a narrow ring supporting 3 tubercles. 
