New and rare species of urban flora of the city of Saratov

Currently, the growth of cities is causing serious environmental problems. As they form, natural ecosystems are destroyed. It is known that the basis of any ecosystem consists of higher plants, the species composition of which ensures its stability. With anthropogenic influence on the urban ecosystem, it is possible to destroy the natural habitats of a number of plant species that may occupy territories with conditions more or less similar to natural ones. In some cases, the soil conditions of the urban ecosystem allow species adapted to harsh conditions to grow - lack of moisture, salinization, lack of nutrients, specific mechanical composition of the soil. The species composition of the flora of the urban ecosystem is of interest in terms of adaptation to anthropogenic stress and is being actively studied. As a result of the 2022 field season, species were discovered on the territory of the city of Saratov, among which Euphorbia peplus L., Potentilla reptans L., Phalaris canariensis L., Senecio schwetzowii Korsh., Acer campestre L. are considered rare or occasionally occurring. Previously, Diplotaxis tenuifolia (L.) DC. Veronica arvensis L., Potentilla norvegica L. Trifolium arvense L. - a rare species for urban flora, which is common for natural ecosystems, were not specified for the territory of the city of Saratov.