1 Royal Botanic Gardens, Kew, Richmond, UK. a.antonelli@kew.org.
2 Gothenburg Global Biodiversity Centre, Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden. a.antonelli@kew.org.
3 Department of Biology, University of Oxford, Oxford, UK. a.antonelli@kew.org.
4 Gothenburg Global Biodiversity Centre, Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden.
5 Center for Macroecology, Evolution and Climate, Globe Institute, University of Copenhagen, Copenhagen, Denmark.
6 Faculty of Natural Sciences, Lúrio University, Cabo Delgado, Mozambique.
7 Department of Botany, Institute of Biosciences, University of São Paulo, São Paulo, Brazil.
8 Institute of Systematic Botany, The New York Botanical Garden, Bronx, NY, USA.
9 Department of Animal Biology, Institute of Biology, Unicamp, Campinas, Brazil.
10 International Center for Tropical Botany at The Kampong, Florida International University, Miami, FL, USA.
11 Royal Botanic Garden Edinburgh, Edinburgh, UK.
12 Royal Botanic Gardens, Kew, Richmond, UK.
13 South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China.
14 University of the Chinese Academy of Sciences, Beijing, China.
15 Kew Madagascar Conservation Centre, Antananarivo, Madagascar.
16 National Herbarium of Cameroon, IRAD, Yaoundé, Cameroon.
17 Department of Plant Biology, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon.
18 Missouri Botanical Garden, St Louis, MO, USA.
19 Natural History Museum, London, UK. s.knapp@nhm.ac.uk.