1. M. H. Kholodny Institute of Botany, Tereshchenkivska str. 2, 01004 Kyiv, Ukraine
2. Molecular Cell Biology Unit, Lund University, Sölvegatan 35, SE-22362 Lund, Sweden
3. Department of Botany, Hungarian Natural History Museum, H-1431 Budapest, Pf. 137, Hungary
4. University of Rostock, Botanical Garden, Schwaansche Strasse 2, 18055 Rostock, Germany
5. Biological Museum, Lund University, Box 117, SE-22100 Lund, Sweden