The Anatomical characters of leaves epidermis studied to four species (Portulaca.afra , Portulaca oleracea , Portulaca.grandiflora , Portulaca quadrifidal )belong to the Portulaca L. genera from the family Portulacaceae and many characters of the leaves epidermis was useful to separate between the species , especially the qualitative and quantitative characters,the qualitative like the shapes, and nature of the walls of the cells ,in P. afra its cells are polygonal to rectangular in shape, the nature of its walls, which are straight and not wavy, but in other 3 species is irregular in shape, and its cell walls are little to highly undulating ,so the quantitative characters was useful to separate between the species like diameter and numbers of epidermal cell and stomata in leaves in P.afra the epidermal cell were smaller in size, and more numerous than the rest of the species , the epidermal cell and stomata dimensions have shown a variation that helps to separate from each other. So the aim of the study was to a knowledge the anatomical characters of epidermis for the studied species and use these characters to separate between those species taxonomically.

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