Dendrosozophytes of phylum Magnoliophyta in the State Dendrological Park Trostjanets of the NAS of Ukraine

The information on results of research of species composition, geographical origin and viability in the conditions of the dendropark Trostjanets of rare species of plants of phylum Magnolіophyta is given. On the basis of the analysis of inventory materials 2008 it is observed that from 698 species of phylum Magnolіophyta which are cultivated in the park and the arboretum, 73 species are protected on the different level by “red lists”. From this number 35 species are included in the Red list of International Union for the Conservation of Nature and Natural Resources (IUCN), 26 species – in the European Red list (ERL). Under protection of IUCN and ERL at the same time there are 7 species. The 5 species are brought in the Red Book of Ukraine (RBU). Among the studied species which are protected by “red lists” of the global level and RBU, it is revealed the 12 species which required protection according to regional lists of rare species of plants of administrative territories of Ukraine. The most part of rare species of division of Magnolіophyta that are cultivated in the park and the arboretum, derivate from Circumboreal, Iran-Turonian, and Mediterranean areas. In this regard 97.3% of the studied species have natural areas in the floristic regions of the Boreal subkingdom, and 75.3% from them – in Circumboreal floristic region. The studied rare species significantly differ on the level of geographical distribution: 45 species have rather limited natural areas associated with one or two floristic regions; other group of 28 species has wider geographical amplitude: 23 species have natural areas in three floristic regions, in four floristic regions – 3 species, in five and six – by 1 species. Almost a half of quantity of the studied species has natural areas in borders of Ukraine. It is shown the list and general characteristic of the condition of dendrosozophyts of the nature protection categories EN, VU and NT that required the special attention to their protection and preservation