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The Familiar Blackcap

This is the familiar wild black raspberry or Blackcap, sometimes spoken of as the Longworth Blackcap. The specimens shown are better than the average run, having been improved by Mr. Burbank by means of selection. They represent the species unmodified by crossing, however.

The Familiar Blackcap

This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 6 Chapter 2