1. Plant Evolutionary Ecology Institute of Evolution and Ecology University of Tübingen Auf der Morgenstelle 5 72076 Tübingen Germany
2. Department of Plant Biodiversity Institute of Ecology and Evolution with Herbarium Haussknecht and Botanical Garden Friedrich Schiller University Jena, Germany Philosophenweg 16 07743 Jena Germany
3. Meise Botanic Garden Nieuwelaan 38 1860 Meise Belgium
4. Conservatoire Botanique National Méditerranéen de Porquerolles 34 avenue Gambetta 83400 Hyères France
5. Department of Community Ecology Helmholtz Centre for Environmental Research – UFZ Theodor‐Lieser‐Straße 4 06120 Halle Germany
6. German Centre for Integrative Biodiversity Research (iDiv) Halle‐Jena‐Leipzig Deutscher Platz 5e 04103 Leipzig Germany
7. Plant Ecology Institute of Evolution and Ecology University of Tübingen Auf der Morgenstelle 5 72076 Tübingen Germany
8. Conservatory and Botanic Garden of the City of Geneva 1296 Chambésy Geneva Switzerland
9. Plant Evolutionary Ecology Faculty of Biological Sciences Institute of Ecology, Evolution and Diversity Goethe University Frankfurt Max‐von‐Laue‐Str. 13 60438 Frankfurt am Main Germany