1. Department of Botany; Faculty of Science; Charles University in Prague; Benátská 2 CZ-128 01 Prague Czech Republic
2. Institute of Botany; Academy of Sciences of the Czech Republic; Zámek 1 CZ-252 43 Průhonice Czech Republic
3. Plant Cytogenomics Research Group; Central European Institute of Technology (CEITEC); Masaryk University; Kamenice 5 CZ-62500 Brno Czech Republic
4. Institute of Botany; Slovak Academy of Sciences; Dúbravská cesta 9 SK-845 23 Bratislava Slovak Republic
5. Department of Biology and General Ecology; Faculty of Ecology and Environmental Sciences; Technical University in Zvolen; T. G. Masaryka 24 SK-960 53 Zvolen Slovak Republic
6. Eawag Swiss Federal Institute of Aquatic Science and Technology; Department of Aquatic Ecology, Centre of Ecology; Evolution and Biogeochemistry; Seestrasse 79 CH-6047 Kastanienbaum Switzerland
7. Tematínska 4 SK-91501 Nové Mesto nad Váhom Slovak Republic
8. Nature Research Centre; Institute of Botany; Laboratory of Flora and Geobotany; Žaliųjų Ežerų Str. 49 LT-08406 Vilnius Lithuania