PHANEROGAMIA 



687 



Disc -florets hermaphrodite, tubular. Ray-florets one -lipped, female, or her- 

 maphrodite. Anthers without tails. Pappus wanting or formed of awns or 

 scales. Helianthus annuus (Sunflower, Fig. 772 A), If. tuberosus (Jerusalem 



FIG. 779. Arnica montana (J nat. size). OFFICIAL. 



Artichoke), Dahlia, are all from America and in cultivation. In Britain Bidens 

 herbs with opposite leaves, sometimes heterophyllous. Espeletia ( 67 ), characteristic 

 trees or herbs of the Paramos of Colombia and Venezuela. Tagetes, Zinnia, orna- 

 mental plants from America. 



