IOS Congresses

A historical compilation of 68 years of meetings in the IOS since 1950.


  1. First meeting: September 1950, Botanical Institute, Zurich.
  2. Congress: September 1953, Monaco.
  3. Congress: September 1955, London.
  4. Congress: August 1957, Den Haag.
  5. Congress: August-September 1959, Kilel.
  6. Congress: June 1961, Barcelona.
  7. Congress: August 1963, Wien.
  8. Congress: April-May 1965, Catania.
  9. Congress: May 1967, Beaulieu.
  10. Congress: May 1969, Liege.
  11. Congress: June 1971, Heidelberg.
  12. Congress: September 1973, Reading.
  13. Congress: September 1974, Santa Barbara.
  14. Congress: September 1976, Barcelona.
  15. Congress: May 1978, Monte Carlo.
  16. Congress: March 1980, Mexico City.
  17. Congress August 1982, Wien.
  18. Congress: June 1984, Frankfurt.
  19. Inter-Congress: July 1985, Zurich.
  20. Congress: March-April 1986, Salta.
  21. Inter-Congress: September 1987, San Marino.
  22. Congress: June 1988, Harare.
  23. Inter-Congress: April 1989, Palermo.
  24. Congress: July-August 1990, Zurich.
  25. Inter-Congress: July 1991, Bonn.
  26. Congress: April 1992, Phoenix.
  27. Inter-Congress: March 1993, Malta.
  28. Congress: August 1994, Wageningen.
  29. Inter-Congress: September 1995, San Miguel de Allende.
  30. Congress: September 1996, Bologna.
  31. Inter-Congress: September 1997, San Marino.
  32. Congress: August-September 1998, Cape Town.
  33. Congress: March 2000, Zurich.
  34. Congress: April 2002, Phoenix.
  35. Congress: May-June 2004, Hamburg.
  36. Congress: September 2006, Zürich.
  37. Congress: August 2008, Natal.
  38. Other congresses and inter-congresses to come soon.
  39. Congress: November 2017, Cadereyta.

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