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A spiny shrub, Prunus spinosa, native to Europe. Blackthorns produce a bluish-black fruit that was used in an ink recipe written by Theophilus in De Diversis Artibus (Kuhn 1986).

Synonyms and Related Terms

black thorn; sloe; pear haw

Resources and Citations

  • Hermann Kuhn, Conservation and Restoration of Works of Art and Antiquities, Butterworths, London, 1986
  • Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
  • The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998