Comparative study of the epidermal structure of species from three subfamilies of Poaceae

Five species of Poaceae were collected: Briza minor L., Briza maxima L., Setaria viridis (L.) P.B., Setaria verticillata (L.) P.B., and Eleusine indica Gaertn., Fruct. Sem. Pl. which recorded for the first time in the Flora of Syria. Peels from adaxial and abaxial leaf surfaces were prepared and stained with the safranin . The results showed a clearly differences in these sides: existence or absence of the epidermal elements, their shapes and their measurements among the species from one side, and between adaxial and abaxial leaf surface for the same one from the other side.