1. Royal Botanic Garden Edinburgh 20A Inverleith Row Edinburgh EH3 5LR UK
2. School of Biological Sciences University of Edinburgh King's Buildings, Mayfield Road Edinburgh EH9 3JH UK
3. Negaunee Institute for Plant Conservation Science and Action Chicago Botanic Garden, 1000 Lake Cook Rd Glencoe Illinois 60022 USA
4. Finnish Museum of Natural History (Botany Unit) University of Helsinki PO Box 7 FI‐00014 Helsinki Finland
5. Organismal and Evolutionary Biology Research Programme (OEB) Viikki Plant Science Centre (ViPS) PO Box 65, FI‐00014 University of Helsinki Finland
6. Université Paris‐Saclay, CNRS, AgroParisTech, Écologie Systématique et Évolution Orsay 91405 France
7. Instituto de Ciências e Tecnologia das Águas & Herbário HSTM Universidade Federal do Oeste do Pará, Rua Vera Paz, sn, Santarém, CEP 68040‐255 PA Brazil
8. Departamento de Botânica, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais—UFMG Av. Antônio Carlos, 6627, Pampulha, Belo Horizonte, CEP 31270‐901 MG Brazil
9. Department of Biology University of Utah Salt Lake City Utah 84112 USA
10. School of Life Sciences University of Bedfordshire, University Square Luton LU1 3JU UK
11. Royal Botanic Gardens, Kew, Richmond Surrey TW9 3AE UK
12. Department of Biology Bucknell University Lewisburg Pennsylavania 17837 USA
13. Faculity of Environmental and Biological Sciences University of Helsinki FI‐00014 Finland
14. Department of Life Sciences Natural History Museum Cromwell Road London SW7 5BD UK