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Structure of the Institute Scientific activity History of the Institute New cryptogamic records. 11 Index page Scientific activity Periodic publications Novitates Systematicae Plantarum non Vascularium Volume 57, Part 1, 2023 New cryptogamic records. 11 V. M. Kotkova, I. V. Czernyadjeva, E. A. Davydov, G. Ya. Doroshina, D. Yu. Efimov, L. A. Efimova, I. V. Frolov, Ya. I. Gabiger, M. Yu. Glushсhenko, I. A. Gorbunova, D. E. Himelbrant, M. E. Ignatenko, L. B. Kalinina, L. E. Kurbatova, H. V. Kushnevskaya, N. N. Lashchinsky, K. Yu. Lotiev, E. L. Moroz, A. A. Notov, Yu. K. Novozhilov, Yu. S. Otmakhov, N. V. Plikina, N. N. Popova, A. D. Potemkin, V. A. Putilina, P. Yu. Ryzhkova, Ch. N. Sambyla, E. V. Smirnova, I. S. Stepanchikova, Yu. V. Storozhenko, E. I. Troeva, A. G. Tsurykau, V. S. Vishnyakov, A. V. Vlasenko, V. A. Vlasenko, E. A. Volkova, L. F. Volosnova, L. S. Yakovchenko, T. N. Yatsenko-Stepanova, K. A. Zhuykov, A. S. Zueva DOI: https://doi.org/10.31111/nsnr/2023.57.1.155 Full article Abstract First records of algae for the Orenburg Region and Urals of Russia, for the Republic of Belarus and Georgia, fungi for St. Petersburg, Kemerovo and Novosibirsk regions, republics of Altai and Tuva, Altai, Krasnoyarsk and Trans-Baikal territories, myxomycetes for the Omsk and Tomsk regions, republics of Tuva and Sakha (Yakutia) of Russia and Republic of Belarus, lichens, lichenicolous and allied fungi for the Omsk, Ryazan, Sakhalin and Tver regions, Altai, Khabarovsk and Primorye territories, mosses for St. Petersburg, the Leningrad, Saratov and Tula regions, Stavropol Territory, and New Siberian Islands Archipelago, liverwort for St. Petersburg and Krasnoyarsk Territory are presented. The data on their localities, habitats, distribution are provided. The specimens are kept in the herbaria of the Altai State University (ALTB), the Papanin Institute for Biology of Inland Waters of the Russian Academy of Sciences (IBIW), the Komarov Botanical Institute RAS (LE), the Mire Research Group of the Papanin Institute for Biology of Inland Waters of the Russian Academy of Sciences (MIRE), the V. F. Kuprevich Institute of Experimental Botany of the National Academy of Sciences of Belarus (MSK), the Central Siberian botanical garden SB RAS (NSK), the «Galichya Gora» Nature Reserve (VU), the Georgian National Herbarium at the Institute of Botany of the Ilia State University (TBI), and algological collection in the laboratory of the Algology Group of the Institute for Cellular and Intracellular Symbiosis of the Ural Branch of the Russian Academy of Sciences. Barcodes ITS1-5.8S-ITS2 fungal nrDNA region of some specimens have been deposited in the GenBank NCBI

First records of Xanthophyceae for the Vologda and Sverdlovsk regions, and Moscow, Characeae for the Vologda, Orenburg, Tver regions and the Crimea Peninsula, diatoms for the Orenburg Region, aphyllophoroid fungi for the Novgorod and Tyumen regions, agaricoid fungi for the Novosibirsk and Vologda regions, and for the Republic of Altai, lichens for the Arkhangelsk and Murmansk regions, Altai Territory, the Republic of Buryatia and Primorye Territory, mosses for the Kabardino-Balkarian Republic, the Republic of Buryatia, Novaya Zemlya Archipelago and the Kuril Islands, liverwort for the Kurgan Region are presented. The data on their localities, habitats, distribution are provided. The specimens are kept in the herbaria of the Altai State University (ALTB), of the Papanin Institute for Biology of Inland Waters of the Russian Academy of Sciences (IBIW), of the Institute of Problems of Industrial Ecology of the North KSC RAS (INEP), of the Polar-alpine botanical garden-institute KSC RAS (KPABG), of the Komarov Botanical Institute RAS (LE), of the Mire Research Group of the Papanin Institute for Biology of Inland Waters RAS (MIRE), the Central Siberian botanical garden SB RAS (NSK), of the Natural History Museum in Oslo, Norway (O), of the Petrozavodsk State University (PZV), of the Museum of the Institute of Plant and Animal Ecology (SVER), of the Tobolsk complex scientific station of the UB RAS (TOB), of the Institute of General and Experimental Biology SB RAS (UUH) and algological collection in the laboratory of the Algology Group of the Institute for Cellular and Intracellular Symbiosis of the UB RAS.

The data about new findings of species of the genus Mallomonas for the Orenburg Region are given. Among them, M. rasilis is reported for the first time for Russia. For each species, data on morphology, location, and distribution are represented. SEM microphotographs for these species are provided.

Diversity of chrysophycean stomatocysts was studied in the steppe zone of the South Urals. A total of 14 stomatocyst morphotypes were identified, of which four were for the first time observed in Russia. Two morphotypes were described as novel. Morphological descriptions, scanning electron microscopic (SEM) images, and geographical locations were provided for all stomatocysts. High diversity of chrysophycean stomatocysts points to significant development of the chrysophyte flora in reservoirs of the steppe zone of the South Urals, making further research relevant.

For the first time, communities of autotrophic microorganisms in outfalls of seven meso- and hypersaline rivers located in the Eltonsky Natural Park were studied. As a result, 132 species, variants, and forms from six divisions were found. The specific composition of taxa in every watercourse was noted. A correlation between species diversity and salinity levels was not revealed.

The results of studies on phytoplankton community have been analyzed from the aspect of associative symbiosis. It has been shown that associative connections between symbionts in the community are determined by the presence of the main partner (host), dominant micropartners capable of substituting for each other, and associative microsymbionts. An algorithm is proposed for determining the structure of phytoplankton community formed on the basis of associative symbiosis of microalgae.