BIOECOLOGICAL FEATURES OF RARITY <i>EX SITU </i>TREE AND SCHRUB SPECIES
The articles studies the state, biological and ecological features of Red Book of Ukraine tree and shrub species growing in Donetsk Botanical Garden (DBS). In the DBS are characterized by different biological and environmental peculiarities, most of them are in good state, produce sound seeds and show vegetative reproduction. The conclusion has been made that the collection of DBS can be replenished by other dendroflora species of Ukraine, represented in the Red Book of Ukraine.