SECT. II 



PHANEROGAM I A 



683 



scales, Heliantlms anrmus (Suuflower, Fig. 731 A), H. luherosus (Jerusalem 

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

 herbs with opposite leaves, sometimes heterophyllous. Espehtia (*'), characteristic 



Fig 73S. — Arnica montaim (A uat. size). Official. 



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

 mental plants from America. 



(d) Anthemidcac. Receptacle ^^Ith or without floral bracts or hairs ; involucral 

 bracts with dry, membranous margins ; in other respects like the preceding. 



