Tim Entwisle, (IABG, Royal Botanic Gardens Victoria, Melbourne, Australia) & Michael Kiehn (IABG, EBGC, Botanischer Garten der Universitat Wien, Autrich) – Coordinators

Peter Wyse Jackson, Missouri Botanical Garden, St Louis, USA

Nigelcactus Taylor, Singapoure Botanical Garden

Hans-Walter Lack, Berlin-Dahlem Botanical Garden, Germany

Paul J.A. Keßler, Hortus Botanicus Leiden, Leiden Universiteit, Netherland

Nikolaos Thymakis, Institute of Agricultural Sciences, Greece

Krasimir Kosev, University Botanic Gardens, Sofia, Bulgaria

Géza Kóza, Association of Hungarian Arboreta and. Botanical Gardens, Hungary

Maria Cristina Duarte, Faculdade de Ciências, Universidade de Lisboa, Portugal

César Garcia, Jardim Botânico de Lisboa, MUHNAC, Universidade de Lisboa, Portugal

Ana Cristina Tavares, Jardim Botânico da Universidade de Coimbra, Portugal