A. I. Tokaryuk Yuryi Fedkovych Chernivtsi National University Ukraine
I. I. Chorney Yuryi Fedkovych Chernivtsi National University Ukraine
V. V. Budzhak Yuryi Fedkovych Chernivtsi National University Ukraine
V. V. Protopopova Ferenc Rakoczi II Transcarpathian Hungarian Institute, Beregovo Ukraine
M. V. Shevera M.G. Kholodny Institute of Botany, NAS of Ukraine, Kyiv Ferenc Rakoczi II Transcarpathian Hungarian Institute, Beregovo Ukraine