Flora of the Latryk River in the Saratov region

The article presents the results of the studies of the flora of the Latryk River, which is formed by 75 species, 60 genera, belonging to 38 families. The Charophyta and Chlorophyta departments are represented by one species each, Magnoliophyta by 73 species. The families Cyperaceae (10.6% of the total number of species), Asteraceae (8.0), Potamogetonaceae (6.7), Poaceae (6.7), Polygonaceae (6.7) and Typhaceae (5.3%) are distinguished by the greatest diversity. The ecological spectrum of the flora under consideration consists of 56% macrophytes, species traditionally related to aquatic plants, and 29% hygrophytes. During the research period, the locations of five plant species listed in the third edition of the Red Book of the Saratov region and three species listed in the "Annotated list of taxa and populations of fungi, lichens and plants requiring special attention to their condition in the natural environment" were confirmed and identified. The studied river is characterized by a very high trophic level; according to the macrophyte index Sm, the studied river belongs to the "moderately polluted" class.