Protected plants on the territory of the Racheiskii forest natural monuments (Samara Region)

The paper contains species composition of the rare taxa growing in specially protected natural areas in the Samara Region – Gremiachii, the source of Usa river, Malousinskie upland pine and oak forests, Racheiskaia taiga, Racheiskie skaly and Seven springs, located in the Racheiskii forest (upper reaches of the Usa river basin). The authors assess their occurrence in the protected areas. They have established that 98 species of rare vascular plants that included in the Red Book of the Samara Region grow here, among them 4 species are included in the Red Book of the Russian Federation (Iris aphylla L., Fritillaria ruthenica Wikstr., Cypripedium calceolus L., Neottiantha cucullata (L.) Schlechter). Another 17 species need constant monitoring and surveillance. Previously presented for the Usa river basin Cotoneaster alaunicus Golitsin, Dactyloriza longifolia (L.) Aver. and Jurinea ewersmannii Bunge have not been found, their location in the region requires additional research. For the revision of rare plant species the authors have used published materials and unpublished materials of expeditionary research integrated in Information-analytical system Salix. The obtained materials make it possible to correct the natural monuments system by combining identical natural-territorial complexes.