This study presents the comparative, function-oriented analysis of petal structure and osmophore distribution in three Malpighiaceae species, complementing the established role of calyx elaiophores. Integrating light and electron microscopy with floral biology observations and visitor records, the authors document interspecific variation across core floral traits: anthesis timing; corolla senescence, color, and dimensions; petal micromorphology; and the spatial organization of scent-emitting are