Materials on the flora of the territory of special nature protection significance «The Settled Slopes of the Syzganka River» (Bazarnosyzgansky district, Ulyanovsk region)

The article provides a long-term summary of the study of the floral composition of the territory of special natural importance «The settled slopes of the Syzganka River». A floristic list has been compiled, including 233 species of vascular plants belonging to 156 genera and 40 families. 11 rare protected plant species have been identified in the flora, including 3 species included in the IUCN Red List ( Agrimonia pilosa Ledeb., Iris aphylla L. and Pulsatilla patens (L.) Mill.), a representative of the Red Book of the Russian Federation (2024) ( Iris aphylla L.) and 9 species - in the Red Book of the Ulyanovsk region (2015) - Adonis vernalis L., Artemisia latifolia Lebed., Carex pediformis C.A. Mey., Centaurea ruthenica Lam., Cotoneaster melanocarpus (Ledeb.) Lodd., Iris aphylla L., Potentilla alba L., Salvia pratensis L., Stipa pennata L. Adventitious species that pose a threat to natural communities and are included in the Black Book of Flora of Central Russia (2010) have also been found on the territory of the tract: Acer negundo L., Amelanchier spicata (Lam.) K. Koch, Conyza canadensis (L.) Cronquist, Phalacroloma septentrionale (Fernald et Wiegand) Tzvelev, Oenothera biennis L. The high floral diversity underlines the uniqueness of this territory and the need to organize protected areas of regional importance, and also allows it to be used as a reference site for monitoring studies of steppe communities in the northwestern part of the Ulyanovsk region.