Simulating a Poisonous Look
The clover leaves shown above reveal a strange inherited tendency. It is Mr. Burbank's belief that the white markings and the black splotches, which can be readily distinguished, represent an attempt on the part of the plant to simulate a poisonous look, as a means of self protection. Although the tendency to protect themselves with these warning streaks and blotches is very strong, yet in all of his experiments, Mr. Burbank has not found a single clover plant which was actually poisonous.
This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 1 Chapter 2