The study area is less susceptible to technogenesis, which allows us to consider it as a «benchmark »territory for the effective protection of rare plant species by preserving natural complexes. The article provides informationabout 27 species of plants of the Mariinsky district from the Red data book of the Kemerovo region. The analyzed data ofthe scientific Herbarium of KemSU (KEM) (1964–2017), Red data book of the Kemerovo region, the online databases.The systematic, biomorphological,

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... cal, and horological analyses of the list of species by conventional methodsare carried out. Data on the economic value of species, as well as their distribution, limiting factors and protection in theRussian Federation, Kemerovo region and neighboring regions are systematized. The information about 6 new protectedplants and previously unknown locations for the research area is given. The main limiting factors for protected plants offlora of the Mariinsky region are ecological and biological features, destruction and change of their habitats as a result ofhuman economic activity.