394 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



HELIANTHUS L. Sunflower. 



Helianthus annuus L. (annual). 

 Common Sunflower. 



Occasional. Waste places as an escape from cultivation. 

 July — Sept. Adventive from the western United States. 



Cultivated for ornament and for its seeds which yield 

 an oil or are fed to poultry. The plant is medicinal. 



Helianthus petiolaris Nutt. (provided with leaf-stalks). 



Rare. Roadsides and waste ground as an escape from 

 cultivation: East Lyme (Miss A. M. Ryon), Hartford (H. S. 

 Clark), Naugatuck (B. B. Bristol), New Milford (E. H. 

 Austin). Aug. — Sept. Introduced from the western United 

 States. 



Helianthus debilis Nutt. (weak). 



Rare. Waste ground: Waterbury (A. E. Blewitt). 

 Sept. — Oct. Fugitive from the South. 

 Helianthus debilis Nutt., var. cucumerifolius (Torr. & Gray) 

 Gray (cucumber-leaved). 



Rare. New London, escaped from gardens (Graves), 

 Bridgeport (Eames). July — Aug. Fugitive from the South- 

 west. 



Helianthus scaberrimus Ell. (very rough). 

 Helianthus rigidus Desf. 



Rare. Dry fields: Waterbury (A. E. Blewitt), Oxford 

 (Harger). Aug. — Sept. Adventive from the West. 



Helianthus laetiflorus Pers. (flowering abundantly). 



Rare. Glastonbury, along roadside and in waste ground 

 (Bissell). Aug. — Sept. Adventive from the West. 



Helianthus grosseserratus Martens (coarsely toothed). 



Rare. Fields and open places : Newington, apparently 

 native at this station (Weatherby), Oxford, probably intro- 

 duced (Harger). Aug. — Sept. 



Helianthus giganteus L. (gigantic). 



Helianthus giganteus L., var. ambiguus Torr. & Gray. 



Moist ground and banks of streams. Occasional or fre- 

 quent near the coast eastward, becoming common in the south- 



