1. Department of Earth and Environmental Sciences, University of Pavia, Pavia, Italy
2. Centre for the Conservation of Biodiversity (CCB), Department of Life and Environmental Sciences, University of Cagliari, Cagliari, Italy
3. Department of Biology, Ecology and Earth Sciences, University of Calabria, Cosenza, Italy
4. Department of Earth and Environmental Sciences, University of Milano-Bicocca, Milan, Italy
5. Department of Science, University of Roma Tre, Rome, Italy
6. Institute for Cultural Heritage, Region Emilia-Romagna, Bologna, Italy
7. School of Biosciences and Veterinary Medicine, University of Camerino – Floristic Research Center of the Apennines, National Park of Gran Sasso and Laga Mountains, Barisciano, L’Aquila, Italy
8. Department of Biology, University of Pisa, Pisa, Italy
9. Department of Life Sciences, University of Trieste, Trieste, Italy
10. Department of Agriculture, Food and Forest Sciences, University of Palermo, Palermo, Italy
11. Department of Biology, University of Florence, Florence, Italy
12. Department of Agricultural, Food and Environmental Sciences, University of Perugia, Perugia, Italy
13. Department of Environmental Biology, Sapienza University of Rome, Rome, Italy
14. Rovereto Civic Museum Foundation, Rovereto, Trento, Italy
15. Department of Biology, University of Naples Federico II, Naples, Italy
16. Institute for Timber Plants and the Environment, Turin, Italy
17. Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania Luigi Vanvitelli, Caserta, Italy
18. Botanical Garden of Padua, University of Padua, Padua, Italy
19. Department of Biology, University of Bari ‘Aldo Moro’, Bari, Italy
20. Ministry for Environment and Protection of Land and Sea, General Directorate Protection Nature and Sea, Rome, Italy