The Shasta Daisy and Two of Its Parents
The upper flower is a form of the Shasta Daisy slightly different from that shown in a previous photo, the curving rays of which give a better realization of the kinship between the daisy and the chrysanthemum. At the bottom are shown a Japanese daisy at the left, and an European daisy at the right, both in proportionate size. The two small flowers at the bottom may truly be called direct ancestors of the larger flower above.
This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 2 Chapter 1