CYPERACEAE 199 
3. S. Carteri Britton. Plant 1-2 dm. eu pe eee d ciliate: 
scapes smooth: spikelets mainly < d 2—4 m ong, mpou and purs 
scales ovate, slightly over 1 mm. long, ae pointe ted or obtu 
broadly obovoid or turbinate, bon 0.5 mm. long, not stipitate ne inelands, 
Everglades Keys, Fla. 
4. S. coarctatus (Ell.) Britton. Plant 1-3 dm. tall: leaf-blades glabrous or 
nearly so: scapes smooth: spikelets linear-ellipsoid, or ellipsoid, 2-6 mm. long, 
j n i cluster: scales broadly ovate, about 1.5 m 
obtuse or minutely pointed: achene turbinate, about 1 mm. long, pale, slightly 
stipitate.—Pinelands and sandy soil, Coastal Plain, Fla. to Ala. and S. C. 
. S. barbatus (Rottb.) Britton. Plant 0.5-2 dm. tall: leaf-blades iE 
ciliate: scapes smooth or nearly so: Re linear to linear- in iur 4—8 
mm. long, der capitate: scales 1-2 mm. long, each with a minute slightly 
` spreading tip: achene bro PA SN “fully 05 mm. long, ES minutely 
stipitate. d d (Rottb.) R. Pr. S. floridanus Britton. ]— (W ATER- 
GRASS.)— E oadsides, dels and gardens, Coastal Plain, Fla. to Ala. 
and 8. C. Nat ES op 
6. S. stenophyllus (Ell) Britton. Plant 1-2 dm. tall: leaf- por PRA 
ciliate: scapes scabrous, at least above: spikelets ellipsoid to linear, 5-7 m 
a j n involuer 
ly 2 
an 
pubescent: achene obovoid, about 1 mm. long, bluish-white, rounded under the 
tubercle, contracted at the base.—Pinelands, a and dry sandy soil, 
Coastal Plain, Fla. to La. and N. C. 
7 S. War E Britton. Plant 1-4 dm. tall: leaf-blades smooth or 
m rA scabrous scapes smooth and glabrous: spikelets ovoid to ellipsoid- 
oid, 5-7 mm. long, capita isi head sessile in an wipe of ey vide 
broad fimbriate bases and setaceous tips: scales ovate, mostly ong, 
abruptly vius ‘tipped, finely Denn nt: achene turbin F or bil. obovoid 
less than 1 mm. long, white, truncate or notched under the tubercle, somewha f 
out fd at the base.—Dry sandy soil, pinelands, sandhills, and roadsides, 
Coastal Plain, Fla. and Ga. | 
9. BLEOCHARIS R. Br. Annual or perennial Hc tufted’ herbs. 
Leaves reduced to more or less pus M he aths paa are truncate or some- 
times produeed into tooth-like ongate blades. Scapes simple, ex- 
eept when proliferous. Pu inm RN en or flattened, ereet, 
the subtending bract inconspicuous. Scales spirally imbricate. Perianth of 
1-12, usually 6, retrorsely barbed bristles, or wanting. Stamens 2 or 3. 
Ovary mostly sessile: style swollen at the base. Stigmas 2 or 3. Achene 
lenticular or 3-angled, ond or variously roughened, capped by a tubercle 
formed by the persistent base of the style.—About 150 species, widely dis- 
tributed in cool and warm regions.—Spr.-fall, or all year S.—SPIKE-RUSHES. 
Spikelets scarcely if at all thicker than the scape; scales 
mostly leathery. I. CELLULOSAE. 
ee | manifestly thicker than the Scape; scales mostly 
Stigmas 2: achene lenticulate or biconvex. II. OBTUSAE. 
Stigmas 3: achenes 3-angled or turgid. III. TENUES. 
I. 
Scape nodose-septate: bristles poorly Piscis pamm than 
the achene or rarely equalling it. 1. E. equisetoides. 
Scape the ach ee bristles well-developed longer than 
e ach 
