COMPOSITJE. (COMPOSITE FAMILY.) 235 
* * * Rays 3- 5-toothed or lobed. 
+ Rays yellow : achenia orbicular, broadly winged, warty, and with a tubercle at 
each end on the inside, 2-toothed: scales of the involucre nearly equal: heads 
long-peduncled. 
9. C. auriculata, L. Stem erect, pubescent, commonly branched ; upper 
leaves oblong or ovate-lanceolate, mostly entire, nearly sessile; the lower peti- 
oled, oval or roundish, entire, or with 2—4 small lateral lobes ; exterior scales 
of the involucre lanceolate; rays 4-toothed. (C. pubescens, Ell.) — Rich shaded 
soil, West Florida to the mountains of North Carolina, June - Sept. — Stem 
1°-4° high. Leaves 1/~4! long, variously divided on the same plant. Rays 
showy. 
10. C. grandiflora, Nutt. Stem slender, smooth, ascending ; leaves elon- 
gated ; the lowest linear-spatulate, on long ciliate petioles ; the upper ternately 
or l ~ 2-pinnately parted, the divisions linear; exterior scales of the involucre 
ovate-lanceolate ; rays large, 4 - 5-toothed. — Dry soil, Florida and Georgia, and 
westward. April-June. — Stem 8/-12! high. 
11. C, lanceolata, L. Smoothish; stem short, ascending ; leaves undi- 
vided, thick ; the lowest spatulate-oblong on long ciliate petioles; the upper 
lanceolate sessile; exterior scales of the involucre ovate-lanceolate ; rays large, 
strongly 4—5-toothed. (C. crassifolia, Ait., stem and leaves hairy or woolly.) — 
Dry rich soil, Florida to North Carolina. May and June. — Stem 6/—12' long. 
+ + Rays yellow : achenia nearly straight, oblong, 2-awned, the margins with a 
serrulate or pectinate wing (except No. 12): exterior scales of the involucre shorter 
than the interior : disk dark purple. 
12. C, Leavenworthii, Torr. & Gray. Smooth; stem dichotomous 
above; leaves opposite, linear, entire, or with two lateral lobes ; rays 3-toothed ; 
achenia with a broad whitish entire wing, cOnspicuously 9-toothed. — Tampa 
Bay, East Florida. — Stem slender, 19 -2? high. Lower leaves 3/-4! long, 
W wide. Rays 5" —6" long. 
13. C. gladiata, Walt. Smooth; stem terete, naked above, simple, or 
With few peduncle-like branches ; leaves fleshy, alternate, entire, or rarely 3-lobed ; 
the lowest ones spatulate-oblong, on long petioles; the upper small, linear ; 
large; exterior scales of the involucre small and roundish ; rays showy, 
: ; wings of the achenia pectinately toothed. — Low pine barrens, Flor- - 
ida to North Carolina, and westward. Sept. and Oct. — Stem 29 —39 high. 
leaves 8/-10/ long. Rays wedge-shaped, 1! long. : 
14. C. angustifolia, Ait. Smooth; stem slender, 4-angled, dichoto- 
mously branched above ; leaves opposite or alternate, linear, obtuse, entire; the 
lowest ones spatulate-lanceolate ; heads small, corymbose; rays 3-toothed ; wings 
of the achenia pectinately toothed.— Pine-barren swamps, Florida to North | 
Carolina, and westward. Sept. and Oct.— Stem 29-39 high. Leaves some- - 
what fleshy. Rays }! long. uncut — 
| € C. integrifolia, Poir. Smooth; stem terete, corymbosely branched 
“Ove ; leaves opposite, petioled, entire, ovate or oblong, obtuse, the 
