The paper presents new records for 28 vascular plant species from 14 Eurasian countries. Five taxa (Catabrosa capusii, Poa albertii, Poa intricata, Poa pseudoaltaica, Poa sergievskajae) are reported from Kazakhstan, three (Ranunculus pseudomonophyllus, Ranunculus smirnovii, Ranunculus turczaninovii) from Mongolia, three (Panicum barbipulvinatum, Stipa eriocaulis, Tragopogon pratensis subsp. minor) from Poland, three (Euphorbia subtilis, Corydalis grubovii, Thymus callieri) from Russia, two (Atriplex ornata, Corispermum dutreuilii) from Afghanistan, two (Orobanche grenieri, Ranunculus mongolicus) from Kyrgyzstan, two (Erigeron annuus, Sternbergia lutea) from Tajikistan, two (Orobanche baumanniorum, Orobanche kotschyi) from Turkey, one (Polygonum subaphyllum) from China, one (Orobanche bartlingii) from Georgia, one (Rubus slavonicus) from Germany, one (Cenchrus spinifex) from Montenegro, one (Rubus canadensis) from Slovenia and one (Bolboschoenus yagara) from Switzerland. For each species, synonyms, general distribution, habitat preferences, taxonomy with remarks on recognition and differentiation of the species from the most similar taxa occurring in a given country as well as a list of recorded localities (often far from the previously known areas) are presented.

Обнародованы новые номенклатурные комбинации: Campanula krylovii (Olonova) Vasjukov, comb. et stat. nov. (Campanulaceae) и Chamaecytisus ssyreiszczikovii (V. I. Krecz.) Vasjukov et Tatanov, comb. nov. (Fabaceae); второй таксон лектотипифицирован. Ключевые слова: Campanula, Chamaecytisus, номенклатурные комбинации.

The article presents a list of invasive and potentially invasive plants in the flora of the Middle Volga region (in Samara oblast and Ulyanovsk oblast) for the first time. The list includes 59 species distributed in groups according to their activity, features of interaction with native species, and the nature of occupied habitats. For most species, the time of entry to the flora of the region is found. Some theoretical aspects of the introduction of blacklists are discussed.

The paper presents new records for 29 vascular plant species from 12 Eurasian countries. Seven taxa (Agave sisalana, Austrocylindropuntia subulata, Lagurus ovatus subsp. nanus, Opuntia stricta, Orobanche serbica, Oxalis articulata, Vitis × instabilis) are reported from Albania, one (Allium carinatum) from the Europaean part of Russia, six (Dipsacus fullonum, Gagea shmakoviana, Mentha × dalmatica, Thymus indigirkensis, Thymus sergievskajae, Viola × sukaczewii) from the Asian part of Russia, two (Agrostis sozanensis, Poa mustangensis) from China, two (Carex muskingumensis, Sedum rubens) from Poland, two (Crataegus macrocarpa, Dactylorhiza lapponica) from Romania, two (Oxygraphis delavayi, Ranunculus eryuanensis) from Nepal, two (Erigeron bonariensis, Ophioglossum vulgatum) from Tajikistan, one (Ranunculus olgae) from Kazakhstan, one (Najas guadelupensis) from Hungary, one (Orobanche bartlingii) from Armenia, one (Crataegus petrodavisii) from Azerbaijan and one (Amaranthus powellii) from Georgia. For each species, synonyms, general distribution, habitat preferences, taxonomy with remarks on recognition, and differentiation the species from the most similar taxa occurring in a given country, as well as a list of recorded localities (often far from the previously known areas) are presented.