140 CYPERACEAE 
cas of the spikelets merely concave, spirally imbricate. 
ase of the style ic swollen, por as a tu- 
bercle on the achene, xd 2 duous in Websteria. 
aere (bristles) wan 
ne not surm a by a tubercle: dilated style- 
P trune "ron T. FIMBRISTYLIS. 
~, 
chene surmounted by a tubercle: dilated style- 
base not ee 8. STENOPHYLLUS. 
Perianth- (bristles) present. 
se herbs: Di solitary, several-many-fiow 
are ed. : achene tubercled : anthers ellipsoid He lin- 
ear, not conspicuously elongate. 9. ELEOCHARIS. 
ee herbs: spikelets umbellate, 1-flowered : 
achene not tu ibercled: anthers linear- filiform, 
Ereatly dona E 10. WEBSTERIA. 
Base of Plc style not at all, or only slightly, thickened, 
deciduous. 
Penan i EUR — or elongate bristles, or obsolete or 
Perianth -bristles numerous, greatly n silky. 11. PEL DUM, 
Perianth-bristles 1-8, short, stiff, or wan 12. SciR 
Perianth of 3 sessile or stipitate scales, ud 'alter- 
nating with as many barbed bristles 13. FUIRENA. 
III. RYNCHOSPOREAE 
Stigmas 2: achene lenticular 
Spikelets in a dense Hero subtended’ by a leafy involucre. 14. DICHROMENA. 
Spikelets not in dense involucrate heads. 
Spikelets several-flowered: perianth n "^ 15. PSILOCARYA. 
Spikelets 1-2-flowered, or rarely few Hom ceed perianth 
resent, the bristles sometimes deciauous or Am 16. RYNCHOSPORA. 
Stigmas 3: achene 3-angled. 
Viger wanting: spikelets short and stout: achene dark. 
rescence paniculate: spikelets straight: achene of 
"un ovoid type. 17. MARISCUS. 
Inflorescence capitate: spikelets curved: achene ellip- 
soid, similar at both ends. 18. REMIREA. 
Perianth present : spikelets slender: achene white. 19. SCHOENUS. 
IV. SCLERIEAE 
Spikes few-flowered: perianth-bristles wanting: achene bony 
or crustaceous, with a disk at the base. 20. SCLERIA. 
V. CARICEAE 
Plant with more than one leaf, each leaf a a sheath, a li- 
gule, and a midrib. 21. CAREX. 
Plant with one leaf, the leaf without sheath, ligule, or midrib. 22. CYMOPHYLLUS. 
1. LIPOCARPHA R. Pr, Annual low tufted herbs. Leaf-blades very 
narrow. Spikelets many-flowered, few in a terminal involuerate head. Scales 
firm, spirally ee my a subtending a pair of bractlets which enclose a 
flower, or ibis of the lower ones empty. Flowers perfect. Perianth want- 
m Stamens 1 or 2. Style deciduous, not enlarged at the base. Stigmas 2 — 
r 3. Achene flattened or 3-angled.—About 15 species, widely distributed. 
RAY) 
i 
1. L. maculata (Michx.) Torr. Plant d OM 
aper leaf- Ms narrowly linear, 1-2 AA, 
wide, volute: scape flattened, SSS) Wit, ^ 
taller than the esos involueral bracts Sw NU REE 
2-4, wed above the dilated leaves: 
spikelets ovoid or ellipsoid, 4-7 mm. long; 
cales rhombic-cuneate, scarcely 2 mm. 
ina, white-ma cae ed, or Mn Misa 
brown spots: exterior braet hyaline, 
is |a piss pale, ellipsoid -obovoid, 
ong.—Mois and springy 
ied Coastal Pla. Fla. 3 wn and V a: 
Adv. N.— —(W. I., Mez., C. A., S. 4) —Sum 
fall. 
b 
