The Sensitive Plant and Its Cousin
The tiny seedlings shown here are the sensitive plant and its unsensitive cousin, the acacia tree. Although these plants are clearly related, and resemble each other as seedlings, one has the sensitive, shrinking tendency, while the other, through its lack of it, testifies to an entirely different heredity.
This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 1 Chapter 2