The Elaeagnus or Goumi Berry
The original Goami berry, as imported by Mr. Burbank from Japan, was a very astringent fruit, and with a very thorny stem. Through selective breeding Mr. Burbank has had good success in eliminating the thorn and in improving the fruit. He has made experiment tests with five species of Elaeagnus, all imported from the Orient.
This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 6 Chapter 9