1. Department of Earth and Environmental Sciences KU Leuven Leuven Belgium
2. Institute of Biology/Geobotany and Botanical Garden Martin Luther University Halle‐Wittenberg Halle (Saale) Germany
3. German Centre for Integrative Biodiversity Research (iDiv) Halle‐Jena‐Leipzig Leipzig Germany
4. CEFE University of Montpellier CNRS EPHE IRD University of Paul‐Valéry Montpellier Montpellier France
5. INRAE University of BordeauxBIOGECO Cestas France
6. Białowieża Geobotanical Station Faculty of Biology University of Warsaw Białowieża Poland
7. Department of Forest Ecology and Management Swedish University of Agricultural Sciences Umeå Sweden
8. NBN Trust Nottingham UK
9. Geobotany Faculty of Biology University of Freiburg Freiburg Germany
10. Department of Agriculture, Food Environment and Forestry University of Firenze Firenze Italy
11. Systematic Botany and Functional Biodiversity Life Science Leipzig University Germany
12. Plant Ecology and Nature Conservation Group Wageningen University Wageningen The Netherlands
13. Forest and Nature Lab Campus Gontrode Department of Environment Ghent University Melle‐Gontrode Belgium
14. Department of Geosciences and Natural Resource Management University of Copenhagen Frederiksberg C Denmark
15. Key Laboratory of Aquatic Botany and Watershed Ecology Wuhan Botanical Garden Chinese Academy of Sciences Wuhan China