The figures at the left show the American crabapple, those at the right the Chinese crabapple. It is possible that the American fruit owes its relatively large size to attention paid it, in the way of cultivation, by the Indians at a remote period. In any event, this fruit has qualities that make it a desirable parent in hybridizing experiments. We shall see that Mr. Burbank has used it to good advantage in this way.
This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 4 Chapter 1