The White Blackberry Perfected
The success of Mr. Burbank's production may be judged by the firm, luscious, pure white fruit as shown above. The white blackberry is now a thoroughly fixed race coming true from the seed-a fruit which, if found in the state of nature, would unhesitatingly be pronounced a distinct species. It is whiter than the whitest blackberry man ever saw before and compares in size and lusciousness with its paternal ancestor, the Lawton.
This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 2 Chapter 2