PHENOLOGY OF THE FAR EAST SPECIES OF ACER IN THE MARI EL REPUBLIC CONDITIONS
The results of phenological observations of 2014-2018 years for the 6 Far East Acer species in the Mari El Republic conditions are presented. The species with the earliest and latest dates of phenophases are identified. Acer ginnala is characterized by the late terms of leaf color, the late end of the growing season and long flowering period.