Formosa Plum Fruits
This is another of Mr. Burbank's quartet of best plums. Like the Santa Rosa Plum it is of mixed heritage. Formosa plums are surprisingly uniform in size, averaging about six inches in circumference. They are exceedingly attractive in appearance, assuming a rich red color on ripening. The juicy yellow flesh is almost free from the stone.
This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 5 Chapter 2