1. President of the Nomenclature Section of XIX International Botanical Congress, Department of Life Sciences, Natural History Museum Cromwell Road, London SW7 5BD U.K.
2. Comparative Plant and Fungal Biology Department Royal Botanic Gardens Kew, Richmond, Surrey TW9 3AE U.K.
3. Rapporteur‐général, Nomenclature Section of XX International Botanical Congress, Botanischer Garten und Botanisches Museum Berlin, Freie Universität Berlin Königin‐Luise‐Straße 6–8, 14195 Berlin Germany