CYPERACEAE 171 
short-pointed.—(SEA  CLUB-RUSH.  SALT-MARSH  BULRUSH.  SPURT-GRASS.)— 
Brackish marshes, Coastal Plain and New England Coast, Fla. to Tex. and N. S. 
“14, S. sylvaticus L. Perennial, tufted: stems up to 2 m. tall, rather stout: 
leaves PE pins spikelets ov void or oblong-ovoid, 3-5 mm. long, 2-8 in the 
clusters: scales 1-1.5 mm. long, brown, except the green center, obtuse: perianth- 
1 mm. long. 
bristles longer than Hs. achene: achene obovoid or ellipsoid, about 
—Swamps and wet stream-banks, various provinces, Ga. to Mich. id Me.— 
C15. S. atrovirens Muhl. Perennial, tuft ede stems up to 1.5 m. tall, rather 
slender: leaves bright- green: spikelets iis 2 in D 3.5-8 mm. long, 
or longer, 9-30 in the clusters: scales ong, greenish-brown or red- 
dish, acute: perianth- a es about ed as ie jue achene oe 
obovoid, about 1 m ong, rather long pointed, "onse. BULRUSH. )—Swamps 
and meadows, bu provinces, Ga. ., Sask., Ont., 
#16. S. polyphyllus Vahl. Perennial, nies tufted: stems up f to 1.5 m. tall, 
sharply 3-angled: -leaves mae gree n: spikelets ovoid, 2.5-3 m m. long, 3—8 in 
the clusters: seales 1-1.5 ong, bright-brown or reddish, mucronulate: 
perianth- Da much-bent, pt twice as long as the achene: phus obovoid, 
f ly tong, short- -tipped. M Mi woods, and meadows, various 
provinces, Ga. t Ala., Ark., Minn., and 
17. S. georgianus Harpe E Perennial, often tufted: stems A to 1.2 m. tall, 
nearly terete: leaves bright-green: spikelets ovo s 2—4 mm. long, numerous, 
or e du in the clusters: scales 1-1.5 m m. long, zm a brown, 
eddish, nulate: perianth-bristles wanting o or mere rudiments: achene 
broadly ellipsoid. Jess than 1 mm. long, short- o —Meadows, a and 
muddy banks, various provinces, Ga. to Ark. and Que 
18. S. divaricatus Ell. Pe Deepa le imes tufted: stems up to 1.5 m. tall, 
obtusely 3- -angled: leaves deep-gre Soft: spikelets cylindrie or oblong, 3—5 
mm., becoming 10—12 mm. long, 2b solitary at the tips of the poss gines 
branches: scales 1-1.5 mm. long, brown, Apt en, r pale, : per 
anth-bristles pur longer than the achene: achene obo void or ui. lipoid, 
about ong, pale or nearly ps smooth, ee -pointed.—Swamps and 
muddy banks, Coastal Plain, Fla. to , Mo., and Va. 
19. S. fontinalis Harper. Perennial cmd similar pi S. divaricatus and S. 
lineatus in habit: spikelets ovoid, 2-4 . long, becoming narrower and: ee 
in age, mostly solitary at the tips E tho inflorescence: branches: scales 1.5-2 
mm. long, greenish or brownish-green, the margins often whitish, acute : peri- 
anth-bristles bent, paid as long as the achene: achene ellips oid, someti ime 
broadly so, about 1 m ong, ye ee ish or greenish, minutely papillose, long- 
tipped.—Pond-margins "and springy piace Coastal Plain of Ga. 
S. lineatus Michx. Perennial, tufted: stems up to 1.5 Pn 3- ier en 
ea mote, pale-green, 
long, usually solitary at the tip of the inflorescence-branches: Rules 9-9. o mm. 
long, d EN eign or pale-brown, except the green a. Eod -pointed : 
perianth-bristles much pa much longer than the achene: obovoid or 
ellipsoid-obovoid, full mm. long, pale-brown, short- ped Mr d: and 
wet m iene various Sed Fla. £o Tex., Ore., Ont., and N. H. 
21. S. cyperinus (L.) Kunth. dosi up to 1.5 m. Ls nearly terete: 
es io green: piece ovoid o oid- oo 4—6 long or longer 
ge, in den eads or clusters: ae . lo Das pres or aeute: 
perianth. ‘bristles to much exceeding the ee enes and scales, grayish- 
wn or rust-colored: ache ne cue d OT uec barely 1 mm. lon 
REN or nearly white, are E —( WOOL-GRASS. )—Swamps HS dr mead- 
ows, various provinces, N. C. ni 'k., Mo., Du and Newf. 
