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An Improved Evening Primrose

Mr. Burbank has worked extensively with the evening primrose. This one is a species from South America, which attains altogether unusual dimensions, some specimens suggesting a small handkerchief spread out on the foliage. Mr. Burbank's experiments with the evening primrose have convinced him that Professor DeVries' celebrated mutants of this tribe are in reality hybrid forms.

An Improved Evening Primrose

This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 10 Chapter 2