The genus Vicia L. is one of the forage legume in Fabaceae family. V. sativa, V. cordata,V. angustifolia ,V. michauxii ,V. peregrine ,V. sojakii and V. ciceroidae have similarities specieally in leaves and flower morphology, so their distinguished are difficult. In other to study of efficiency of morphology characters of pollen grain in distinction the taxonomical relation in Vicia, 21 species were gathered from Tehran, Qazvin, Semnan and Mazandaran provinces and studied by using SEM. Pollen shapes in all species is ablong, tricolporate and ornamentation of pollen surface is reticulate to regulate. Polar view (P), Furrow sculpture (Fs), muri and swollen mesocolpium (Sm) have an important role to distinction them. The species identification key were prepared accordingly.