The Shasta and a Selected European Ox-Eye
The direct color photograph print above gives a good comparative idea of the difference in size between the average Shasta daisy and the largest of its European parents. The European Ox-Eye, at the right above, is perhaps three times as large as the average of its kind, and represents an improvement in size and form brought purely through selection.
This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 2 Chapter 1