The Buckeye, or Horse Chestnut
Hitherto no commercial use has been made of the large nuts of the buckeye, or horse chestnut, notwithstanding the general distribution of the trees on which they grow. Mr. Burbank suggests that it might be possible by selective breeding to remove their objectionable or poisonous principle, and thus to produce a nut of great commercial value. The buckeye already contains a high starch content.
This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 11 Chapter 8