1. Department of Plant and Environmental Sciences University of Copenhagen, Denmark 1871 Frederiksberg Denmark
2. Department of Biology, Botany Unit University of Pisa Pisa 56126 Italy
3. IMIB Biodiversity Research Institute (University of Oviedo ‐ CSIC ‐ Principality of Asturias) University of Oviedo 33600 Mieres Spain
4. School of Ecology and Environment Studies Nalanda University 803116 Rajgir India
5. Royal Botanic Gardens Kew Wakehurst RH17 6TN Ardingly UK
6. Aix Marseille Université IMBE, Avignon Univ, CNRS, IRD 13397 Marseille France
7. Meise Botanic Garden Nieuwelaan 38 Meise 1860 Belgium
8. Department of Biology University of Kentucky Lexington Kentucky 40506‐022 USA
9. Department of Plants and Soil Sciences University of Kentucky Lexington Kentucky 40506‐022 USA