6G0 CYPERACE^. 



SCIRPUS, L. 



S. (Oxycaryum) Cubensis, I'ofpi). & Kunth. Culms acutely 3 angu- 

 lar, Icaiy at base (b'-12' liiyli), sliorlcr than the leaves and the involucre; 

 spikes obovate, compressed, 12-flowered, closely packed in a terminal globular 

 head ; scales rigid, oblong-obovate, tapering into a stout spreading point, 13- 

 nerved; stamens 3 ; style deeply 2-parted ; nut ovate-lanceolate, acuminate, 

 concavo-convex; bristles none. — Marshes, New Orleans (Dr. Hale), Mobile 

 [Mohr). 



TRICHELOSTYLIS, Lestib. 



T. miliacea, Nees. Culm weak, compre8sed-4-angled (C'-12' high); 

 leaves ensitbrm, straight, erect; umbel decompound, spreading; spikes small 

 (1'' wide) globular, the scales oblong, obtuse, 3-nerved ; uut obovate, roughish. 

 — Bogs and ditches, Apalachicola. 



ISOLEPIS, R. Br. 



I. carinata, Hook. & Am. Culms setaceous, with a single setaceous leaf 

 at the base, CEespitose ; spike solitary, apparently lateral, ovate, 6 - 8-flowered ; 

 scales ovate, acute, strongly keeled, twice as long as the acutely 3-angled 

 roughish nut. — New Orleans [Dr. Hale), and northward. 



RHYNCHOSPORA, Vahl 



R. Stipitata, n. sp. Culms tall (3^-5^ high), triangular, bending ; leaves 

 linear; corymbs 4- 5, compound, drooping; spikes (4" long) ovate-lanceo- 

 late, the scales persistent; nuts stipitate, 1-3 in a spike, roundish, biconvex, 

 finely wrinkled, twice as long as the compressed-conical tubercle ; bristles 

 G, more than twice the length of the nut ; stamens 3. — River-banks, South 

 Florida. 



CLADIUM, P. Browne. 



C. mariscoides, Torr. Culms nearly terete; leaves narrow-linear, 

 smoothish ; panicles 2-3, the few branches erect; spikes 3-8 in a cluster; 

 nut ovate, acute, faintly wrinkled. (Schcenus, iJuld.) — Grassy ponds, West 

 Florida, North Carolina, and northward. 



CAREX, L. 



C. trisperma, Dow. Spikes very small, distant, mostly with 3 fertile 

 flowers, the lowest one Icafy-bracted ; perigynia oblong, plano-convex, acute, 

 finely nerved, longer than the thin white scale ; culms very slender, spreading 

 or prostrate, 10' -20' long. — Cold shady swamps, mountains of North Caro- 

 lina {Dr. Gattiiifjer), and northward. 



C. gynandra, Schw. Perigynium ovate or elliptical, acute, obscurely 

 nerved at the base, the upper ones crowded, and as long as the acute scale, 

 the lower ones scattered, and shorter than the awned scales, sheaths re- 

 trorsely scabrous; otherwise like C. crinita. — Damp woods, Florida and 

 northward. 



