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A Wild Artichoke
It will be seen that this wild artichoke, in full bloom, is hardly three inches across. The flowerhead as a whole is strikingly suggestive of that of the thistle. This specimen gives a very good idea of the manner of flower from which the modern improved artichoke has been developed. Contrast this little flower with the giant in the next picture.

This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 7 Chapter 6