HELIANTHUS Atiombens. 

 Darh-eyed Sunflower. 



Class and Order. — Syngenesia Polygamia Frustrania. 

 Syn. Helianthus atrorubens. Piirsh Flo. N. A. vol. 2, p. 573. 

 — Helianthus atrorubens. Bot. illag. pi. 2668. 



Root fibrous — stem tall, erect, branching — radical leaves very large, broadly 

 lanceolate, margins dentate, nerved, of a dark green — cauline leaves 

 sessile, opposite, ovate lanceolate, dentate acute — calyx many segments 

 imbricate, acute — ^coroUa dark bright yellow — radiated florets, barren 

 dentate — florets of the disk fertile — whole plant rugose. 



This is perhaps one of the most desirable species of the geims 

 Helianthus, from the brilliancy of the colour and its moderate growth. 

 It makes a striking appearance when planted at the back of the flower 

 borders, and will continue in beauty to a late period in the autumn. 

 According to Pursh it is found in the " western parts of Pensylvania," 

 and was introduced into this country in 1732. It will grow well in 

 any good garden soil, and may be increased by parting the roots. 

 There are not many species of this genus suitable for a flower garden, 

 as they grow to such a large size, and take up so much room : the 

 best are 



H. mollis. 



— multifloms. 



— difFusus. 



PI. 43. 



