The article provides additional information on the species composition of the flora of the Absheron Peninsula. The landscape of the peninsula is divided into two unequal parts, which differ orographically. Most of it is represented by the foothills and is located to the west of the peninsula, and a small eastern part is a flat semi-desert - the maximum height is 34 m. Covers natural and artificial ecosystems (semi-desert, middle and low mountain ranges, mud volcanoes, sand dunes and hills, arable lands, settlements). The synanthropic flora was formed here under the influence of anthropogenic factors, and its further adventitization is underway [Mikailov, 2003]. The article includes information about 16 herbarium species, previously common in Absheron, but not included in the list of flora due to lack of information, and the range and general characteristics of 1 new species. Thus, the number of species distributed on the peninsula reaches 693, which are combined into 385 genera.