A Typical Stoneless Plum
In this stoneless plum the seed, with its germinal substance, is retained, but the stone has been almost altogether eliminated. The resulting fruit is a plum of such unique character that you may bite through it almost as readily as you would bite through a strawberry. The production of this stoneless plum is one of Mr. Burbank's greatest achievements. It was accomplished through a long series of hybridizing experiments fully explained in this chapter.
This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 2 Chapter 4