Iran is considered as one of the most important centers of genus hawthorn diversity and it is growing wild in the some parts of the country including north to center and east to west. To date, hawthorn has been the subject of only a few genetic studies and, therefore, the present study was aimed to evaluate genetic diversity among some species of hawthorn (Crataegus spp. Pajarkova.) from north and east Iran carried out. Using morphological characteristics in more than 30 different traits in this experiment related to the genus was studied and measured. The results of cluster analysis showed that the obtained pattern, in which the species were assigned into three separate major groups. At the first group including two species which belong to the ser. Pentagynae. The second group included two species C. microphylla var. micropylla and C. microphylla var. dolichocarpa At the next groups including species C. monogyna var. lasiocarpa,C. pseudoheterophylla subsp. turcomanica, C. pseudoheterophylla subsp. turkestanica, C. songarica, C. atrosanguinea, C. meyeri, C. ambigua, C. assadii, C. azarolus var. pontica and C. kurdistanica.

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