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An Improved Crown Vetch

This is a useful and attractive perennial shrub, growing in California and in the Southern States, but unfortunately not hardy enough for our Eastern and Northern States. There are several species, giving opportunity for cross-breeding experiments, and it is possible that hardier varieties may be developed.

An Improved Crown Vetch

This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 10 Chapter 9