1. Missouri Botanical Garden, Africa & Madagascar Department, P.O. Box 299, St. Louis, MO 63166-0299, USA.
2. Herbarium et Bibliothèque de Botanique Africaine, Université Libre de Bruxelles, Boulevard du Triomphe, B-1050 Bruxelles, Belgium.
3. Botanic Garden Meise, Nieuwelaan 38, BE-1860 Meise, Belgium.
4. AMAP Lab, IRD, CIRAD, CNRS, INRA, Univ Montpellier, Montpellier, France.
5. Laboratoire d’Évolution biologique et Écologie, Faculté des Sciences, Université Libre de Bruxelles, Brussels, Belgium.
6. FRB–CESAB 5, rue de l’École de Médecine, 34000 Montpellier, France.
7. Center for Biodiversity Dynamics in a Changing World (BIOCHANGE), Department of Bioscience, Aarhus University, Ny Munkegade 114, DK-8000 Aarhus C, Denmark.
8. Section for Ecoinformatics and Biodiversity, Department of Bioscience, Aarhus University, Ny Munkegade 114, DK-8000 Aarhus C, Denmark.
9. Royal Botanic Garden Edinburgh, 20A Inverleith Row, Edinburgh EH3 5LR, UK.
10. Royal Botanic Gardens, Kew, Richmond, Surrey TW9 3AE, UK.
11. Plant Systematic and Ecology Laboratory, Department of Biology, Higher Teachers' Training College B.P. 047, University of Yaounde I.
12. Naturalis Biodiversity Center, Darwinweg 2, 2333 CR Leiden, Netherlands.
13. DIADE, IRD, Univ Montpellier, Montpellier, France.