248 COMPOSITE FAMILY. 



C. Drummdndii, Torr. & Gray. Low and spreading, rather hairy, with 

 leaves of 3-7 oval leaflets, or some of them simple ; heads on long pedun- 

 cles ; very broad rays golden-yellow, with small dark spot at base. Tex. 

 Common in gardens. 



* * (D Disk flowers yellow ; rays yellow, with a darker and purplish- 



streaked spot near the base ; akenes winged and ^-toothed. 



C. coronata, Hook. Low, with slender-petioled leaves oblong or spatu- 

 late, or 'some of them 3-5-paried and very long peduncle ; rays broad 

 and handsome. Tex. Cult. 



* * * 21. Disk flowers and rays (V long) entirely yellow; akenes orbicu- 

 lar, much incurved and broadly winged when ripe, crowned with 2 little 

 teeth or scales. 



C. lanceolata, Linn. Wild W. and S., and cult. ; l-2 high, smooth 

 or sometimes downy, in tufts, with lanceolate or oblanceolate entire leaves, 

 mostly crowded at the base, and long slender peduncles ; flowers in early 

 summer. 



C. auriculata, Linn. Wild W. arid S., and in some gardens ; taller, 

 sometimes with runners or suckers at base, leafy to near the top ; upper 

 leaves oblong, lower roundish and sometimes auricled at base or with 3-5 

 lobes or leaflets. 



2. Eays entire or nearly so, oblong or lanceolate ; akenes oblong, with 

 a very narrow wing or border, not incurved, and obscurely if at all 2- 

 toothed at the apex; scales of outer involucre narrow and entire; heads 

 rather small, the flowers all yellow. 11 



* Low, 1-3 C high, leafy to the top; leaves really opposite and sessile, but 

 divided into 3 leaflets, thus seeming to be 6 in a whorl. Wild chiefly in 

 S. States; all but the first are cult, in gardens. 



C. senifdlia, Michx. Seemingly 6 lance-ovate and entire leaflets in a 

 whorl (i.e. two, but each 3-divided), smooth or downy. 



C. verticillata, Linn. The pair of teaves cut into once or twice pin- 

 nate almost thread-shaped divisions, smooth. 



C. delphinifdlia, Lam. Very like the last, but with fewer lance- 

 linear divisions. 



* * Tall, leafy to the top, with evidently opposite petioled leaves. 



C. trlpteris, Linn. Stems simple, 4-9 high ; leaves of 3-5 lanceo^ 

 late entire leaflets ; heads corymbed ; very short outer involucre, and 

 blunt rays. Rich ground, W. and S. 



3. Hays oval or oblong, golden yellow, slightly notched ; akenes wing- 

 less, not incurved, bearing 2 awns or teeth for a puppus ; outer involucre 

 conspicuous and resembling leaves; branching plants of wet grounds, 

 with thin leaves mostly 0/3-7 pinnate toothed or cut veiny leaflets; re- 

 sembling the next genus, but the awns not downwardly barbed. (T) (2) 



C. trichosp^rma, Michx. Swamps mostly near the coast ; l-2 high, 

 with 3-7 lanceolate or linear cut-toothed leaflets or divisions ; numerous 

 heads, and narrow-oblong or linear wedge-shaped marginless akenes with 

 2 stout teeth. 



C. atirea, Ait. Upper leaves often simple, lower nearly as in the fore- 

 going, and shorter wedge-obovate akenes with 2 or 4 short, chaff-like 

 teeth. Va., S. 



C. arist6sa, Michx. Leaves more compound, with oblong or lanceo- 

 late, often pinnatifid leaflets, and broad-obovate, very flat akenes slightly 

 margined and bristly ciliate, the pappus of 2 long and slender awns, or 

 sometimes 3 or 4, or in one variety none at all. Mich., W. and S. 



