2r)8 COMPOSITE, (composite family.) 



ous; aclicnia hroadly winged, circular, sliplitly 2-toothed, jdainly paj)illo8e 

 on hutli sides. — .Muuntains of Georgia and Carolina. May -Sept. 



12. C. grandiflora, Nutt. iStem slender, smootli, ascending; leaves 

 elongati'il ; the lowest linear-spatulate. on long eiiiate petioles; the ni)j)er ter- 

 nattly or 1 -2-pinnately parted, the divisions linear; exterior scales of the 

 involucre ovate-lanceolate; rays large, 4-5-toothed. — Dry soil, Kloriila, 

 Georgia, and westward. April- June. — IStem 8'- 12' high. 



13. C. lanceolata, L. Smoothi.sh; stem short, ascending; leaves un- 

 divided, rarely 2-3-lobed, thick; the lowest spatulate-ohlong on long ciliate 

 petioles; the upper lanceolate, sessile; e.xterior scales of the involucre ovate- 

 lanceolate; rays large, strongly 4-5-toothed. (C\ cra.«sifolia, yl/'^, .stem and 

 leaves hairy or woolly.) — Dry soil, i'h^rida to Nortli Carolina. May -June. 

 Stem 6'- 12' long. 



•*- •*- liai/s yellow: achenia nearli/ straight, obluntj, 2-airned, the mnrqins with a 

 serrulate or pectinate wing (except No. 14) : exterior scales of the involucre 

 shorter than the interior: disk dark purple. 



14. C. Leavenworthii, Torr. & Gray. Smooth; stem dicliotomous 

 above ; leaves opposite, linear, entire, or with two lateral lobes ; rays 3-toothed ; 

 achenia witli a broad whitish entire wing, conspicuou.sly 2-toothed. — Coast 

 of Flori(hi, and westward. — Stem slender, l°-2° high. Lower leaves 3' -4' 

 long, I" wide. Kays 5"- 6" long. 



15. 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-toothed ; wings of the aclienia pectinately toothed. — Low pine 

 barrens. Sept. -Oct. — Stem 2° -3° high. Lowest leaves 8' -10' long. 

 Rays wedge-shaped, 1' long. 



16. C. angUStifolia, Ait. Smooth; stem .slender, 4-angled, diclioto- 

 mously branched above ; leaves opposite or alternate, linear, obtuse, entire; 

 the lowe.st ones spatulate-lanceolate ; heads small, corymbose ; rays 3 toothed ; 

 wings of the achenia pectinately toothed. — Pine barren swamps, in the lower 

 districts. Sept. -Oct. — Stem 2° -3° high. Leaves somewhat fleshy. Kays 

 ¥ long. 



17. C. integrifolia, Poir. Smooth; .stem terete, corymbosely liranched 

 above; leaves opposite, ])etioled, entire, ovate or oblong, obtuse, the margins 

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

 involucre oblong-linear; rays weilge-shaped, palmately 3-lobed; ovary wing- 

 less, with his]iid margins. — River banks. South Carolina and Georgia. Sept. 

 — Stem 2° -3° high. 



•»- -t- Rays purple or rose-color 



1 8. C. nudata, Nutt. Smooth ; stem slender, forking above ; leaves al- 

 ternate, distant, terete and rush-like ; rays bright purple, 3-toothed ; achenia 

 with lacerated wings, 2-awned. — Pine barren ponds, Florida and Georgia, 

 near the coast. April. — Stem 2° high. Lowest leaves 1° long. Rays 1' 

 long. 



