K. S. Dubenskiy herbarium collection from 1896–1919

During the implementation of project for digitization vascular plant herbarium Tula Region (RFBR grant 19-44-710002, DS/309), collection K. S. Dubensky, kept in funds Museum Association, was examined. The collected 1896–1919 today has museum-historical as well general biological and partly evolutionary significance, since it reflects changes regional flora that have occurred over past century. contains 484 species plants specimens belonging to 360 species, 60 families, 30 orders, 3 classes Tracheophyta. There are 2 which not listed Conspect (Sheremet’eva et al., 2008), previously common been observed extremely rarely last years, 6 included Red Data Book (Krasnaia…, 2020), Appendix Book.