For the first time, the anatomical structure of the vegetative organs of the species J. hippolyti and J. narbuti was studied in the conditions of Kyzylkum (Uzbekistan, Province Bukhara) and revealed the diagnostic features of these species. A different combination of xeromorphic and mesomorphic features was determined, which ensures adaptation to habitat conditions. In J. narbuti xeromorphic features predominate, which indicates a more adaptable and wide distribution in the natural habitat of this species. In J. hippolyti-mesomorphic signs that show the rarity of the species in their natural habitat, compared to J. narbuti.