1. Royal Botanic Gardens, Kew Richmond Surrey TW9 3AE UK
2. UN Environment Programme World Conservation Monitoring Centre (UNEP‐WCMC) Cambridge CB3 0DL UK
3. School of Biological and Behavioral Sciences Queen Mary University of London London E1 4NS UK
4. Faculty of Science, Department of Botany and Zoology Masaryk University Brno 61137 Czech Republic
5. Red de Biología Evolutiva Instituto de Ecología AC Xalapa Veracruz 91073 Mexico
6. Department of Biological Sciences University of Cape Town Cape Town 7700 South Africa
7. Institut Botanic de Barcelona (IBB) CSIC‐CMCNB Barcelona 08038 Spain