Cherry Blossom Preparing for Pollenation
At the left, a cherry blossom about to open. In the center, the same blossom with petals removed, showing the group of stamens. At the right, the same blossom, from which the pollen-bearing anthers at the ends of the stamens have been removed, so that self-fertilization may not occur. Pollen from another flower is applied with the finger tip or a camel's hair brush to the pistil which lies at the center of the stamens, and cross-fertilization is thus effected.
This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 2 Chapter 7