1. Royal Botanic Gardens, Kew, Richmond, Surrey, UK.
2. UN Environment Programme World Conservation Monitoring Centre (UNEP-WCMC), Cambridge, UK.
3. International Plant Science Center, New York Botanical Garden, New York, NY, USA.
4. Department of Systematic and Evolutionary Botany, University of Zurich, Switzerland.
5. Herbarium, School of Biological Sciences, University of Reading, Whiteknights, UK.
6. Royal Botanic Gardens, Kew, Wakehurst, Ardingly, UK.
7. Botanic Gardens Conservation International, Richmond, UK.
8. Wageningen University and Research, Wageningen, Netherlands.
9. Department of Geography, Royal Holloway, University of London, Egham, UK.
10. Institute of Archaeology, University College London, London, UK.
11. Naturalis Biodiversity Center, Leiden, Netherlands.
12. Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy.
13. Gothenburg Global Biodiversity Centre, Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden.
14. Department of Biology, University of Oxford, Oxford, UK.