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Pollen morphology of 4 species (A. aucheri , A. auriculata, A. caucasica, A. nova) belonging to the genus
Arabis L. in Iraq was examined by light microscope and scanning electron microscope to determine the
significance of pollen features as a taxonomic characters. The results showed pollen grains of the species
were monades, homopolar, tricolpate, and with medium size, but the species varied in shapes (polar and
equatorial view), colpus length and width, exine thickness and exine ornamentation. Pollen colors were
brown convert to brownish yellow.