Information Sources

Haworthia retusa, S. Riversdale

I´m using information and quotations from following sources:

  • M.B. Bayer, „Haworthia Revisited“, Umdaus Press, Hatfield, South Africa, 1999.
  • M.B. Bayer, "Haworthia Update, Essays on Haworthia - Volume 1", Umdaus Press, Hatfield, South Africa, 2002.
  • M.B. Bayer, "Haworthia Update, Essays on Haworthia - Volume 2", published by Harry Mays (editor), Woodsleigh, Preston, UK, 2006.
  • M.B. Bayer, "Haworthia Update, Essays on Haworthia - Volume 3", published by Harry Mays (editor), Woodsleigh, Preston, UK, 2007.
  • Ingo Breuer, "The World of Haworthias - Volume 1", published by Ingo Breuer and Arbeitskreis fur Mammillarienfreunde e.V. (AfM), Niederzier and Homburg/Saar, Gemany, 1998.
  • Ingo Breuer, "The World of Haworthias - Volume 2", published by Ingo Breuer and Arbeitskreis fur Mammillarienfreunde e.V. (AfM), Niederzier and Homburg/Saar, Gemany, 2000.
  • Charles L. Scott, "The Genus Haworthia, a taxonomic revision", Aloe Books, PO Box 2017, 2000 Johannesburg, South Africa, 1985.
  • John Pilbeam, "Haworthia and Astroloba - A Collector´s Guide", B.T. Batsford Ltd., London, UK, 1983.
  • "Alsterworthia International" Journal, editor Harry Mays, Woodsleigh, Moss Lane, St. Michaels on Wyre, Preston, UK.

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