1. Institute of Bioscience and Bioresources (IBBR), National Council of Research (CNR), via Amendola 165/A, IT-70126, Bari, Italy
2. University of Dubrovnik, Institute for Marine and Coastal Research, Kneza Damjana Jude 12, HR-20000 Dubrovnik, Croatia
3. Institute of Biology, Research Centre of the Slovenian Academy of Sciences and Arts, Novi trg 2, SI-1000, Ljubljana, Slovenia
4. Macedonian Academy of Sciences and Arts, Krste Misirkov 2, MK-1000 Skopje, Republic of North Macedonia
5. University of Nova Gorica, School for Viticulture and Enology, Vipavska 13, SI-5000 Nova Gorica, Slovenia
6. University of Göttingen, Albrecht-von-Haller Institute of Plant Sciences, Department of Vegetation Analysis and Plant Diversity, Untere Karspüle 2, D-37073 Göttingen, Germany
7. Centre Alpien de Phytogéographie, Fondation J.-M. Aubert, Case postale 71, CH-1938 Champex- Lac, Switzerland
8. University of Geneva, Section of Biology, Department of Botany and Plant Biology, Case postale 60, CH-1292 Chambésy, Switzerland