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Falcaria vulgaris is a biennial herbaceous pastureland plant belongs to Apiaceae family, which has been recorded in Iranian traditional medicine. In this report developmental reproductive steps were studied. Flower buds at different developmental stages were collected and fixed in FAA then maintained in Ethanol (%70). After preparation and embedding samples in paraffin, the samples were sectioned by microtome and stained with Hematoxyline-Eosine respectively. Results showed that initiation patterns of flower and floral organ development is acropet. Stamen and gynoecium formation occurred with the time interval. Several schizogenical secretion channels exist in the ovary wall. The flower consists of five sepals, five isolated petals, five stamens and the inferior ovary with two carpels. The anthers are tetra sporangiate type and pollen grains are binuclear and have three colpates. Ovule is anatropous, unitegmic and tenuinucellate. Embryo sac is formed corresponding to the polygonum type.