1. The Natural History Museum, London, UK
2. Université de La Réunion, Saint-Pierre, Ile de La Réunion
3. University of Camerino, Camerino (MC), Italy
4. Institute of Biology, University of West Hungary, Szombathely, Hungary
5. Universitat Autònoma de Barcelona, Bellaterra, Spain
6. The New York Botanical Garden, Bronx, NY, USA
7. Komarov Botanical Institute of Russian Academy of Science, St Petersburg, Russia
8. Berlin, Germany
9. Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Minas Gerais, Brazil
10. Diever, The Netherlands
11. Shanghai Normal University, Shanghai Shi, China
12. University of Cape Town, Rondebosch, South Africa
13. Conservatoire botanique national du Massif central, Chavaniac Lafayette, France
14. Adnan Menderes Üniversitesi, Kepez-Aydin, Turkey
15. Freie Universität Berlin, Berlin, Germany
16. CNRS UMR 6553, Université de Rennes 1, Rennes, France
17. Celldömölk, Hungary
18. W. Szafer Institute of Botany, Polish Academy of Sciences, Kraków, Poland
19. Université Lyon-1 et UMR CNRS 5023 (Ecologie des Hydrosystèmes Naturels et Anthropisés), Villeurbanne, France
20. University of Ostrava, Ostrava, Czech Republic
21. University of Perugia, Perugia, Italy
22. CSIR-National Botanical Research Institute, Lucknow, India
23. Institute of Botany and Botanical Garden, University of Belgrade, Belgrade, Serbia
24. Herdwangen-Schönach, Germany
25. Białowieża Geobotanical Station, University of Warsaw, Warsaw, Poland