Managing the IOS

The IOS is managed by a Board of eleven members. The Executive Board comprises six members (President, Vice-President, Secretary, Treasurer, Assistant Secretary and Editor) who are elected for a period of two years at the Members' Meeting.

President: Professor Len Newton, Department of Plants & Microbial Sciences, Kenyatta University, P.O. Box 43844, Nairobi, Kenya. E-mail:

Vice-President: Dr Reto Nyffeler, Institut für Systematische Botanik, Zollikerstrasse 107, CH-8008 Zürich, Switzerland. E-mail:

Secretary: Dr David Hunt, The Manse, Chapel Lane, Milborne Port, Sherborne, DT9 5DL, U.K. Fax: +44 1963 250022. E-mail:

Assistant (Membership) Secretary: Dr Jean-Marc Chalet, Av. Tronchet 22B, CH 1226 Thonex, Switzerland. Fax: +41 22 348 6162. E-mail:

Treasurer: Dr. Thomas Bolliger, Städtische Sukkulenten-Sammlung, Mythenquai 88, CH- 8002 Züirich, Switzerland. Fax: 41 1 2015540. E-mail: