Synopsis of the flora of horsetails (Equisetopsida C. Agardh) in Donbass

The paper presents an overview of research on horsetails in world flora, and also the results of criticaltaxonomic, chorological and ecotopical studies of the genus Equisetum L. s.l. in Donbass flora. The presence of 6 species of the genus Equisetum L., namely E. arvense L., E. fluviatile L., E. palustre L., E. pratense Ehrh., E. sylvaticum L., E. telmateia Ehrh., and also 2 species of the genus Hippochaete Milde, namely H. hyemalis (L.) Bruhin, H. ramosissima (Desf.) Börner have been recorded. Full label captions of herbarium collection samples stored in the Herbarium of Donetsk Botanical Garden – DNZ are cited.