WILD DAHLIA TYPES 



Figure 22. These two flowers were collected by Mr. Popenoe near Antigua, Guate- 

 mala, in 1916. Above is shown Dahlia coccinia, remarkably like the specimen figured by 

 Cavanilles in 1794 (see Fig. 21). The long-petalled, eight-rayed Dahlia popenovii is 

 quite different from the "double" flower shown in Figure 23, which corresponds in form 

 and color with the type of the species juarezii, the ancestor of our cactus dahlias. Con- 

 trary to the usual belief the Aztecs domesticated the wild dahlias found in the mountains 

 of Mexico and Guatemala, and to them belongs the credit for originating the "double" 

 forms. 



