1. Department of Life Sciences, The Natural History Museum, Cromwell Road, London SW7 5BD, UK
2. Komarov Botanical Institute of the Russian Academy of Sciences, St. Petersburg, Russia
3. Laboratoire de Botanique et Ecologie Végétale, Faculté des Sciences et Techniques, Université d'Abomey-Calavi, Cotonou, Benin
4. Grupo de Investigación en Biodiversidad, Medio Ambiente y Salud, BIOMAS / Facultad de Ingenierías y Ciencias Agropecuarias, Universidad de Las Américas, Quito, Ecuador
5. Área de Botánica, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain
6. Facultad de Biología, Universidad de Murcia, Murcia, Spain
7. Instituto de Investigaciones en Biodiversidad y Medioambiente (INIBIOMA); Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) – Universidad Nacional del Comahue (UNComahue), Quintral, Río Negro, Argentina
8. Department of Ecology, Institute of Biology, Faculty of Sciences, University of Pécs, Pécs, Hungary
9. Berlin, Germany
10. Universidade Estadual de Feira de Santana, Feira de Santana, BA – Brazil
11. Herbario UCH, Universidad Autónoma de Chiriquí, Panamá
12. Vicerrectoría de Investigación y Posgrado, Puebla, Mexico
13. Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, Sofia, Bulgaria
14. Department of Biological Sciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia
15. Institute of Botany and Botanical Garden, Faculty of Biology, University of Belgrade, Belgrade, Serbia
16. Department of Botany, Hungarian Natural History Museum, Budapest, Hungary
17. Department of Botany, Institute of Biology and Ecology, Faculty of Science, Pavol Jozef Šafárik University in Košice, Košice, Slovakia
18. MuSe Museo delle Scienze, Corso del Lavoro e della Scienza, Trento, Italy
19. Institute of Biology Bucharest of Romanian Academy, Bucharest, Romania
20. Polar-Alpine Botanical Garden-Institute of the Russian Academy of Sciences, Apatity, Murmansk Province, Russia