Composite Coreopsis. 



245 



with pimiatisect leaves and large bright -orange-yellow flower- 

 heads. Pappus of two long spreading bristles. 



19. HELIANTHUS. 



Tall coarse herbs, mostly natives of North America. Leaves 

 large, simple, scabrid. Flower-heads very large, yellow with a 

 dark centre. The Jerusalem Artichoke (H. tuberosus) is a 

 familiar species of this genus. The name is from rj^Uos*, sun, 

 and avdos, a flower. 



1. H. dnnuus. Sunflower. This is the most familiar of 

 South American plants, producing, perhaps, larger flower-heads 

 than any other species in the order. There are several varieties 

 in cultivation, differing in stature, size, and colour of flowers ; 

 and there is a double variety with all the florets ligulate. 



2. H. argyrophyllus. 

 This is an allied species in 

 which the leaves are clothed 

 with a soft silky silvery 

 down. It grows about 6 

 feet high, with rather 

 smaller flower-heads of the 

 same colour. Some garden 

 varieties appear to be inter- 

 mediate between this and 

 the preceding. 



3. H. multiflorus (fig. 

 133). Perennial, about 4 

 or 5 feet high, with more 

 numerous smaller flower- 

 heads. There is a double 

 variety in cultivation. 



4. H. orgy alls. A per- 

 ennial species as tall as 

 the Common Sunflower, but 

 much slenderer, and narrow- 

 leaved. Flower-heads com- 

 paratively small and nume- 

 rous, forming a large 

 panicle. 



Tithdnia splendens, or 

 Comadinium aurantlacum, is a handsome half-hardy peren- 

 nial from Mexico, growing about 5 or 6 feet high, with large 



Fig. 133. Helianthus multiflorus. 

 (J nat. size.) 



