Dr. Walter G. Berendsohn, Botanical Garden and Botanical Museum Berlin-Dahlem, D-14195 Berlin, Germany
Anastasios Anagnostopoulos, 121 Stratigou Dagli str., GR-11145 Athens, Greece
Dr. Jasmin Jakupovic, Institute for Organic Chemistry, Sekr. C3, Technical University of Berlin, Strasse des 17. Juni 135, D-10623 Berlin, Germany
Prof. Dr. Pier-Luigi Nimis, Biology Department, University of Trieste, 10 Via Giorgieri, I-34127 Trieste, Italy
Prof. Dr. Benito Valdés, Universidad de Sevilla, Departamento de Biologia vegetal y ecologia, Apartado de Correos 1095, E-41080 Sevilla, Spain