TRIANDRIA, MONOGYNIA. 
35 
10. S. culm exactly triquetrous, leafy at the base. macrosta- 
Leaves linear-lanceolate, nerved, keeled smooth, 
longer than the culm, sheathing at the base, trans- 
versely nerved. Ligula none. Sheath smooth, 
striated. Involucrum long unequal, 3-leaved. 
Spikes sessile, and pedunculated, 6 or 12, scales 
ovate. MuhL 
S. maritimus /3 macrostachyos, Mich. 
S robustus, Pursh. 
S. maritimus, Elliot. 
From three to four feet high, stem acutely 3-angular. Spike- 
lets very large, and of a light brown, or what painters call sienna 
colour. This plant, is, as Pursh remarks, certainly specifi- 
cally distinct from S. maritimus. I have specimens in my 
i herbarium of the latter plant, marked by Willdenow and Schra- 
j der, and have accurately compared them with the American 
plant. On the marshy shores of the Delaware, about two 
miles below Gloucester point. Very scarce. Perennial. 
August . 
11. S culm three-sided, striate, three feet high leafy, atrovirens, 
Radical leaves lanceolate carinated long, those of wmd. 
the culm alternate lanceolate, carinated scabrous. 
Sheath striate smooth transparent. Panicle ter- 
minal proliferous involucrate. Involucre 3 -leaved, 
margin and carina, scabrous. Branches of the 
panicle or peduncles unequal, from 3 to 6, pedi- 
cels 12. Spikelets glomerated numerous (12) 
ovate acute reddish-brown. Calix glumes 1- 
I valved imbricate ovate acute reddish-brown cari- 
[ nated, pubescent. Stam^ 3. PistUlum^ trifid. 
I Seed triquetrous white very small, bristles short, 
I 4. MuhL 
From one to three feet high. In bogs near Woodbury, 
Jersey ; and near the spot where Cyamus flavicomus grows 
in the Neck, this side of the river. Perennial. July, August. 
12. S. culm naked, erect, a little channelled, cespitose, 
sheathing at the base. Spikes lateral, sessile, ovate, 
1 — 3 — 9, many flowered, without bracteas. Calix 
glume ovate, obtuse, and acuminated, margin 
white, keel green. Pistillum ' ifid. Seed nearly 
triquetrous or obovate, shining black, rough or 
