This article presents information on the systematic analysis, morphological characteristics, phenology, distribution areas and ecological characteristics of plant species belonging to the genus Rumex L. distributed in the flora of Uzbekistan. During the research, the root system, stem structure, leaf shapes, flower and fruit morphology of the species were analyzed in detail. Also, the morphological characteristics of the pollen of the most widespread species, Rumex confertus Willd., were studied separately. Pollen grains were analyzed palynologically, and their size, number and shape of stigmas, exine structure were determined. The obtained data are of great importance in identifying Rumex L. species, determining their place in the systematics and elucidating the mechanisms of ecological adaptation. Phenological observations reveal the periodicity of growth and development of species, while areal analysis reveals the regularities of their distribution in various ecological conditions. The research results can be applied in the fields of botany, systematics, palynology and aerobiology.