1. Botanical Garden – University Museum System, University of Pavia, Pavia, Italy
2. Department of Botany and Zoology, Faculty of Science, Masaryk University, Brno, Czech Republic
3. Department of Evolutionary Biology – Plant Biology, University of Florence, Florence, Italy
4. Museum Natural History, University of Florence, Florence, Italy
5. NBFC, National Biodiversity Future Center, Palermo, Italy
6. Department of Earth and Environmental Sciences, University of Pavia, Pavia, Italy