The article examines the floristic analysis of species belonging to the Crataegus L. genus in the mountain-xerophyte and steppe vegetation of Nakhchivan. As a result of the research, it was determined that 13 species of the Crataegus L. genus are found in the mountain xerophytes and steppe vegetation of the studied area. According to the analysis of life forms, the studied species are grouped into 3 subtypes of phanerophytes (mesophanerophytes, microphanerophytes and nanophanerophytes).

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... g to the analysis of ecological groups, there are 7 species of mesoxerophytes, 4 species of xerophytes and 2 species of mesophytes. According to the analysis of geographical habitat types, xerophilic habitat type includes 8 species, Caucasian habitat type includes 2 species, and the remaining types are represented by 1 species as monotype.