This remarkable fruit was produced by Mr. Burbank by hybridizing the Chinese plum and the apricot. Most plant breeders held that so wide a cross was impossible, and in point of fact the hybridization was not effected without difficulty. The story is told in detail in the chapter. The hybrid product is virtually a new species, of which Mr. Burbank has developed many varieties.
This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 4 Chapter 1