COMPOSITiE. (composite FAMILY.) 235 



* * * Rat/s 3 - 5-toothed or lobed. 

 •*- Rays yellow : achenia orbicular, broadly winged, tcarty, and with a tidtercle at 

 each end on the inside, 2-tuolhed: scales of tlie involucre nearly equal : heads 

 lontj-pedumled. 



9. C. auriculata, L. Stem erect, pubescent, commonly Inanclicd ; upper 

 leaves ol)long or ovate-lnnceolatc, 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 

 l°-4° high. Leaves l'-4' long, variously divided on the same j)lant. Kays 

 showy. 



10. C. grandiflora, Nutt. Stem slender, smooth, ascending; leaves elon- 

 gated ; the lowest linear-spatulatc, on long ciliate petioles ; the upper ternately 

 or 1 - 2-pinnately jjarted, the divisions linear ; exterior scales of the involucre 

 ovate-lanceolate ; rays large, 4 - 5-toothed. — Diy soil, Florida and Georgia, and 

 westward. April - June. — Stem 8' - 1 2' liigh. 



11. C. lanceolata, L. Smoothish; stem short, ascending; leaves undi- 

 vided, thick ; th<^ lowest spatulate-ohlong on long ciliate petioles ; the upper 

 lanceolate sessile ; exterior scales of the involucre ovate-lanceolate ; rays large, 

 strongly 4 - S-tootlied. (C. crassifolia. Ait., stem and leaves hairy or woolly.) — 

 Dry rich soil, Florida to North Carolina. May and June. — Stem 6'- 12' long. 



-1- -1- Tuujs yellow : achenia nearly straight, oblong, 2-aivne-d, the margins with a 

 serrulate or pectinate iring [except No. 12) : exterior scales of the involucre shorter 

 than the interior : disk dark purjile. 



12. C. Leavenworthii, Torr. & Gray. Smooth ; stem dichptomous 

 above ; leaves ojjposite, linear, entire, or with two Lateral lobes ; rays 3-toothed ; 

 achenia with a broad whitish entire wing, conspicuously 2-toothed. — Tampa 

 Bay, East Florida. — Stem slender, l°-2°high. Lower leaves 3' -4' long, 

 1" 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 ; 

 heads large ; exterior scales of the involucre small and roundish ; rays showy, 

 4-toothcd ; wings of the achenia pectinately toothed. — Low pine barrens, Flor- 

 ida to North Carolina, and westward. Sept. and Oct. — Stem 2° -3° high. 

 Lowest leaves 8' -10' long. Rays wedge-shaped, 1' long. 



14. C. angustifolia, Ait. Smooth ; stem slender, 4-angIed, diehoto- 

 mously branched al)ove ; leaves opposite or alternate, linear, obtuse, entke ; 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 2° -3° high. Leaves some- 

 what fleshy. Rays j' long. 



15. C. integrifolia, Poir. Smooth ; stem terete, corymbosely branched 

 above ; leaves opposite, petioled, entire, ovate or oblong, obtuse, the margins 

 scarious and roughish ; heads few, on long peduncles ; exterior scales of the 



