The IOS is currently managed by an Executive Board of five members: President, Vice-President, Secretary, Assistant Secretary, and Treasurer who are elected for a period of two years at the statutory General Meeting of Members held during the biennial Congress.

President:

Dr Héctor M. Hernández Macías
Departamento de Botánica, Instituto de Biología UNAM
A.P. 70-233, MEX-04510 México DF, Mexico
e-mail:

Vice-President:

Dr Ulrich Meve
Universität Bayreuth Lehrstuhl für Pflanzensystematik
D-95440 Bayreuth, Germany
e-mail:

Secretary:

Dr David Hunt
83 Church Street, Sherborne, DT9 5DJ, U.K.
e-mail:

Assistant Secretary:

Rainer Mecklenburg
Treeneblick 11, D-24852 Langstedt, Germany
e-mail:

Treasurer:

Sara Oldfield, BGCI, Descanso House
199 Kew Road, Richmond, TW9 3AB, U.K.
e-mail: