1. School of Biological Sciences, University of Portsmouth , Portsmouth PO1 2DY , UK
2. Royal Botanic Gardens , Kew, Richmond, Surrey TW9 3AE , UK
3. Department of Anthropology, National Museum of Natural History, Smithsonian Institution , Washington DC 20560 , USA
4. The New York Botanical Garden , New York, NY 10458 , USA
5. Instituto de Biociências, Universidade Estadual Paulista , Botucatu, São Paulo , Brazil
6. School of Biological and Behavioural Sciences, Queen Mary University of London , London E1 4NS , UK
7. Herbario Forestal Universidad Distrital, Campus El Vivero , CR 5E 15-82 Bogotá , Colombia
8. Department of Horticulture, Michigan State University , East Lansing, MI 48824 , USA
9. Department of Computational Mathematics, Science & Engineering, Michigan State University , East Lansing, MI 48824 , USA
10. Department of Biological Applications and Technology, University of Ioannina , 45110 Ioannina , Greece
11. Department of Biology, Washington University , Saint Louis, MO 63130 , USA
12. Gothenburg Global Biodiversity Centre, Department of Biological and Environmental Sciences, University of Gothenburg , SE 41319 Göteborg , Sweden
13. Department of Biology, University of Oxford , Oxford OX1 3RB , UK