TRIANDRIA, MONOGYNI A U 



10. S. culm exactly triquetrous, leafy at the base. macro*ta- 

 Leaves linear-lanceolate, nerved, keeled smooth, l,, >'"" 

 longer than the culm, sheathing at the base, trans- ' 

 tersely nerved. Ligula none. Sheath smooth, 

 striated. Involucrum long unequal, 3-leav. d. 

 Spikes sessil , and pedunculated, 6 or 12, scales 

 ovate. J/7/2/. 



S. maritimus /3 macrostachyos, Mich. 

 S. robustus, Pursh. 

 S. maritimus, Elliot. 



From three to four feet high, stem acutely 3-angular. Spike- 

 lets very largo, ami of a light brown, or what painters call sienna 

 colour. This plant, is, as Pursh remarks, certainly specifi- 

 cally distinct from S. marit mus. I have specimens in my 

 herbarium of the latter plant, marked by Willdenow anil Sc hea- 

 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. 



I 



11. S culm three-sided, striate, three feet high leafy. ^^1^^, 

 Radical leaves lanceolate carinated long, those of wind, 

 the culm alternate lanceolate, carinated scabrous. enum * 

 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- 

 valved imbricate ovate acute reddish-brown cari- 

 nated, pubescent. Stam. 3. Pistillum, trifid. 



Seed triquetrous white very small, bristles short, 



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, -y^ 

 sheathing at the base. Spikes lateral, sessile, ovate, 



1 — 3 — 9, many flowered, without bracteas. Calix 

 glume ovate, obtuse, and acuminited, margin 

 white, keel green. Pistillum I itid. Seed nearly 

 triquetrous or obovate, shining black, rough or 



