Wild and Improved Dandelions
Mr. Burbank often experiments with our common wild flowers, being always on the lookout for varieties that are susceptible of improvement. His success in developing the familiar dandelion is shown in this picture. The improvement was made by selective breeding. Mr. Burbank thinks that it may be possible to improve the stalk and leaves of the dandelion until it becomes an acceptable garden vegetable.
This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 3 Chapter 6