Review Of Species Of The Howthorn Genus (Crataegus L.) In The Flora Of The Nakhchivan Autonomous Republic

The article presents the results of the study of species belonging to the genus Crataegus L., common in the territory of the Nakhchivan Autonomous Republic. In order to clarify the current state of the genus Crataegus L. in the flora of the Nakhchivan Autonomous Republic, a comparative analysis of herbarium specimens preserved in the herbarium fund of the Institute of Botany of ANAS, Institute of Bioresources of Nakhchivan Section of ANAS and Nakhchivan State University was conducted. Based on the analysis of collected herbarium materials during expeditions conducted in 2004-2013 and according to the literature data 22 species of the genus were revealed at present in the flora of the Nakhichevan Autonomous Republic. 17 of them are wild species occurring in natural conditions. Crataegus chlorocarpa Lenne et C. Koch, C. ferganensis Pojark., C. sanguinea Pall., C. songarica C.Koch, C. turkestanica Pojark species are introduced and widely used in the landscaping of parks and gardens. The article also reflects information about synonyms of species, patterns of distribution among high-altitude zones, habitats and the timing of flowering and fruiting