composite:. 206 helenium. 



branching above into a corymbose pnnicle of large, yellow flowers. Leaves 

 large, opposite or alternate in various degrees. Rays 12 — 20. Variable. 

 July — Sept. Per. Tall Sunjiuwer. 



7. H. a'nnuus. 



ieares all cordate, 3-nerved, only the lowest opposite ; perfjtracZes thick; 

 fioioers nodding. This well known annual is from S. America. It grows in 

 any soil, but its magnitude is increased by the fertility of it in direct propor- 

 tion, until it reaches the higlit of 10 and even 20 feet. The common hight 

 may be stated at 7 feet. The enormous size of the flowers with their broad 

 rays of brilliant yellow are too well known to require description. An edible 

 oil has been e.xpressed from the seeds. A variety occurs with double-flowers. 

 July. Common Sunfloxoer. 



8. H. TUBERO'SUS. — Leaves 3-ncrved, rough, lower ones opposite, 

 cordate-ovate; upper, ovate, acuminate, alternate; petioles ciliate at base. 

 Native of Brazil. The plant has been cultivated for the sake of its tuberous 

 roots which are used as a substitute for potatoes. It is naturalized in borders 

 of fields, hedges, <,tc. Sept. Per. Jerusalem, Artichoke. 



2G. SANVITA'LIA. 

 Involucre closely imbricated ; receptacle chaflTy, conical ; 

 achenia of the ray with 3 awns, of the disk winged. 



Name given by Lamark without explanation. Annual Texian or Mexican 

 herbs with opposite leaves and yellow-rayed flowers. 



S. PROCU'mBENS. — S^cm procumbent ; leaves ovate, entire. Native of 

 Mexico. Flowers from June to Sept. Of a spreading dwarf habit. A foot 

 in lenirth. Flowers yellow. Pretty in patches. Trailing Sanvitalia. 



27. TAGE'TES. 

 Heads hetercgamous ; involucre simple, tubular, of 5 united 

 scales; ray-flowers 5, persistent; receptacle naked; pappus 

 of 5 erect awns. 



Named for Tages, a Tuscan divinity, son of Genius and grandson of 

 Jupiter. Annual iierbs of Tropical America. 



1. T. PA'tULA. — Leaves pinnate, leaflets lanceolate, ciliate-serrate ; 

 ^crfM7ic/es 1 -flowered, thickened u])wards ; i/iro/?/c?e smooth ; 5<cm, spreading. 

 Plant about 2 feet high. Flowers orange and yellow. French Marigold. 



2. T. ERE'cTA. — Leaves pinnate, leaflets lanceolate, ciliate-serrate; 

 peduncles 1-flowered, ventricose ; iHiio/?/c?-e angular ; s<e7« erect. Nearly all 

 the species of the marigold are natives of S. America and Mexico. Well 

 known and popular garden flowers, vv'ith several varieties. African Marigold. 



28. HELE'NIUM. 



Involucre double, the outer of leafy, narrow scales, the inner 



chaffy; rays pistillate; pappus of several 5-awned, cliaffy' 



leaves; receptacle globose, i.aked in the disk and chaffy in 



Ihc ray only; ra}-flo\vers half 3-cleft ; seed villose. 



Named for the celebrated Helen, who is said to have availed herself of the 

 cosmetic properties of the plant. Lvs. alternate, decurrent. Rays yellow. 



