The new findings of the polemochore plants in the Spas-Demensky district of Kaluga region are described in the article. The location of Avenella flexuosa (L.) Drejer confirms the paleohoral origin of these species in the investigated area.
Keywords: alien plant species, biological diversity, flora of Kaluga region, polemochore plants, the Red book of Kaluga region, World War IIAll articles can be accessed under Creative Commons Attribution 4.0 International Public License (CC BY 4.0).