Based on the results of field research, a new locality of Crataegus ucrainica A. Pojark. in the center of this species range, in the Middle Dnipro area, is reported. Cenotic and ecological features of a new habitat of this species at the confluence of the Dnipro and the Ros rivers near Kaniv town (Cherkasy Region) are presented. The studied locality of Crataegus ucrainica has confirmed significant ecological uniqueness and specificity of this species. Therefore, a comparative morphological analysis of existing herbarium collection for reliable identification of the species and further study of its geographic, ecological and coenotic features are needed. Protection measures for the new localities of this rare species included in the IUCN Red List of Threatened Species are urgently needed.

Keywords: Crataegus ucrainica, rare species, protection, Middle Dnipro area

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