Potatoes With a Strange History
These are potatoes grown on a vine on whose stalk a tomato top had been engrafted. The tomato leaves were unable, apparently, to supply just the right kind of material in abundance for the making of the best varieties of potatoes, but they made a creditable effort nevertheless. Considering that no tomato vine had ever grown a potato at all before, the result might be said to be notable.
This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 7 Chapter 4