The article presents the first records: for Russia of one species of chrysophyte algae and one species of agaricoid basidiomycetes, for the Republic of Belarus of three lichenicolous fungi and four species of slime molds, for Uzbekistan and Tajikistan by one species of lichens, and the first records for regions of Russia: one charophyte for the Tambov Region, one diatom species for the Udmurtian Republic, five species of siphonous yellow-green algae for the Republic of Altai, Altai Territory and Nenets Autonomous Okrug, 22 species of basidiomycetes for St. Petersburg, Tyumen Region, and Republic of Altai, including two new species for the Asian part of Russia, two new species for Siberia, and three new species for West Siberia, nine myxomycetes for the Altai Territory, Novosibirsk Region, and Republic of Altai, two species of lichenicolous fungi for the Tver Region, eight species of lichens for the Irkutsk, Omsk, Tver regions, Altai Territory, Republic of Tuva, 19 species of mosses for the Kurgan, Magadan and Ryazan regions, Republic of North Ossetia — Alania, including one new species for the Caucasus. The data on their localities, habitats, distribution are provided. The specimens are kept in the herbaria ALTB, GSU, IBIW, LE, MAG, MSK, NSK, OMSK, PTZ, TOB, YSU, VU, of Institute of Botany, Plant Physiology and Genetics of the National Academy of Sciences of Tajikistan, collection of the Laboratory for Algology in the Papanin Institute for Biology of Inland Waters of the Russian Academy of Sciences, in the private collections of V. S. Vishnyakov, S. M. Goskova, and S. I. Genkal.