Santa Rosa Plum
This remarkable fruit is considered by Mr. Burbank to be one of the four best plums that he has developed. It is an exceedingly intricate crossbred plum, combining the traits of ancestors from three continents. It is of comparatively recent origin, and will play a much more important part in the future, after its merits have come to be generally appreciated.
This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 5 Chapter 2