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Double, and Tending Toward Tripleness

Here the tendency to the balloon flower to increase its petals has taken on another phase, in that there is a rudimentary third row of petals, represented by a transformed stamen. This obviously is promising material for further experiments.

Double, and Tending Toward Tripleness

This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 10 Chapter 1