This article is a continuation of a series of publications covering the alien fraction of the flora of the Saratov region and its influence on the formation of the flora of the region. The work presents results of the inventory of twelve herbarium collections of species alien to Saratov region, being stored in the Herbarium of SSU (SARAT). These species are either widespread throughout the Saratov region, occupying extreme habitats, or are reliably known from a small number of locations.

E.A. Nyushchenko, V.A. Boldyrev, V.V. Solyannikov