CtPERACES. 299 



Sic. i. Scripus proper.— Bristlrs rigid, mostly barbed downwards. 



1. S. planifomus, Muhl. Flat-leaved Club-rush. 



CVms tri;m uil.u*. loosely tufted, leafy at tho base ; /■ tt'CS lim ar. Bat, a? long as - 

 the culm, rough on the i d ivate or oblong, 5 Id 7 -". ijrei tcT, rusty 



color; scales ovate, with a i keel prolonged into an awned tip; bristles 



4 to 6, upwardly ha alum. 



>r moist woods, rare. J use. dims 6 to 12 iuehc-; long, rough on tho edgeg. 

 Scales yello\ • 



2. S. pun0en"s„ Vahl. Pungent OAib-rUsh. 



Ck777tsbarpl i out, with concave 1 to 3, elongated, 



keeled and channelled; spites 1 to (i. capitate; ovoid, lour, o-vevt:>pped by the point- 

 el ittvolflcral leaf ; [ate, 2-eleft at the a] doped 

 with a minute fringe I appendage-; style 2-cleft; bristles 2 to G, shorter than tho 

 obovaie smooth aeh: 



Bot ' r- of fresh ponds and streams. July, Aug. Culm 1 to 4 feet high- Leaves 

 i to 10 inches long. This is tho species used tor ru. h-bottoni chairs^ 



3. S. lacustivis, L. Bulrush Tall Club-rusJi. 



Cu':.'_ tally tapering at the apex; spikes ovate- oblong, nu* 



merous in :; c >mj ound umbeldike panicle, turn d to one si.le, rusty btown; scales 

 ©Vate, mucrDnata ; /■. '■ ivate, mucrouate. 



Fresh water pon t 3 to 8 f 1 1 Id. di. % inch thick at the- 



ral leaf, shorter or longer than tha 

 panicle. 



4. S. debilis, ParsE. Wea%-staL%ed Chib-rurh. 



Calms slei m fll.ro us roots, leafless, sometime* 1-leaved at the brs9 



spikes ovate, 1 to 8 i: :; scales round-ovate, greenish-yellow ; tiylz 2 



to 3-cleft; bristles -i to <'. longer than the obovate shinin » a< b ;dum. 



Law grounds, and bar fe . ig. Ann. Culms <> to 12 inches high. 



.m ihe side of the culm 2 or 3 inches from the top. 

 Bristles retrorsely hispid. 



5. S. ATROYlRd .]. Dark-green Club-rush. 



CuJm rigid, obtiv broadly linear, flat, rough 



margined \ urifoel Cymose-dccompouhd, irfegufar, the numerous spikes clustered 



13 to !e0 together in dense heads ; bristles G, scarcely exceeding the obovoid con 1 * 



I achenittm. 



Low grassy ground, common. July. Culm about 2 feet high, leafy nearly ta 



the top. smooth. Spikes ovoid, dark dead-colored or olive-green, turning brownish. 



we of 3 principal h jreen. 



Sec ii. Tiiicuo?uokl:ii, Richard.— Bristles G, capillary, tortuous, tmoothisb. 

 Stan leafy. 



G. S. LINEATUS, Miclix. Loose-flowered Wool-grass. 



Culm triangular, leafy; le-vcs linear, flat, rough on the margins; umbels termi- 

 nal and axillary, loosely cymose-paniclcd. drooping, the terminal with a 1 to 3-lcaved 

 involucre; spikes oblong, becoming cylindrical, on filiform pedicels; scales ovate, 

 pointed with a green keel. 



Low grounds. July. Culm 1 to 3 feet high. Bristles crisped, scarcely exceeding, 

 tho scales. 



7. S. Eriophorum, Michx. Wool-grass. 



dim nearly terete, very leafy; leaves narrowly linear, long, rigid; panicle 

 ttacjmpound, large, loose; spikes ovate, clustered on the lateral pedicels, woolly 





