The genus Chenopodium L. is belongs to chenopodiaceae family with 15 species occur Iran and it is one of the complex genus in this family. The main purpose of these studies anatomically characters analyzing among the members of this genus and evaluating the efficiency of these features in systematics of the genus. Various anatomical characters such as ; shape of stem, presence of trichum and its variation, cortical parenchyma and subepidermal collenchyma, vascular bundles were very different between species. Species and sub species were easily separated from each other by mean of anatomical characters.