Leaves of Strawberry-Raspberry Hybrids
The strawberry-raspberry hybrids produced by Mr. Burbank had leaves which were uniformly trifoliate, but which varied greatly in size and shape. Characteristic samples of the different forms are here shown. It was peculiarly to be regretted that the hybrids were not fertile, as a new and highly interesting form of fruit would doubtless have resulted had it been possible of establish a permanent race combining the blood of the strawberry and the raspberry.
This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 2 Chapter 9