660 CYPERACE^E. 



SCIRPUS, L. 



S. (Oxycaryum) Cubensis, Poepp. & Kunth. Culms acutely 3 angu- 

 lar. Leafy at base(8'-lli' high), shorter 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 S; Btyle 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, compressed-4-angled (6'-12' high); 

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

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

 — Bogs and ditches, Apalachicola. 



ISOLEPIS, R. Br. 



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

 at the base, caespitose ; 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 

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

 Florida. 



CLADIUM, R 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, Muhl.) — Grassy ponds, West 

 Florida, North Carolina, and northward. 



CAREX, L. 



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

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

 finely nerved, longer than the thin white scale; culms wry Blender, spreading 



or prostrate, lO'-JW long. — Cold shady swamps, mountains of North Caro- 

 lina [Dr. '• 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 awncd scales, sheaths re- 



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

 northward. 



