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