1. Institute for Botany and Botanical Garden, Faculty of Biology, University of Belgrade, Belgrade, Serbia + Department of Botany, Institute of Biology and Ecology, Faculty of Science, Pavol Jozef Šafarik University in Košice, Košice, Slovakia
2. Institute for Botany and Botanical Garden, Faculty of Biology, University of Belgrade, Belgrade, Serbia
3. Department of Botany, Faculty of Biology, Sofia University “St. Kliment Ohridski”, Sofia, Bulgaria
4. Department of Horticulture, Faculty of Agriculture, Cukurova University, Adana, Turkey
5. Department of Biology, Faculty of Arts and Science, Osmaniye Korkut Ata University, Osmaniye, Turkey
6. Department of Biology, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
7. Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, Sofia, Bulgaria
8. Pedagogical University of Cracow, Institute of Biology, Krakow, Poland
9. Department of Plant and Fungal Diversity and Resources, Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, Sofia, Bulgaria + Botanical Garden, Bulgarian Academy of Sciences, Sofia, Bulgaria
10. Department of Biology and Ecology, Faculty of Science, University of Kragujevac, Kragujevac, Serbia
11. Department of Botany, Hungarian Natural History Museum, Budapest, Hungary
12. Special Nature Reserve Zasavica / Pokret gorana Sremska Mitrovica, Sremska Mitrovica