First records for Russia of one colorless chrysophyte species, five species of desmid algae, and two species of lichens, first record for Georgia of one freshwater green alga, first record for the Republic of Kazakhstan of one yellow-green alga, first records for the Republic of Belarus of three species of myxomycetes, first record for the Republic of Azerbaijan of one species of lichens, and first records for regions of Russia: two species of siphonous yellow-green alga for the Krasnodar Territory and Nenets Autonomous Okrug, some species of basidiomycetes for the Arkhangelsk, Kemerovo, Kurgan, Novosibirsk, Omsk, Tyumen regions, Altai Territory, and Republic of Altai, four species of lichenicolous fungi for Samara and Tver regions, some species of lichens for the republics of Karelia and Tuva, Tver Region, and Altai Territory, some species of mosses for St. Petersburg, Kursk, Irkutsk, Voronezh regions, Republic of North Ossetia – Alania, and Kamchatka Territory are presented. The data on their localities, habitats, distribution are provided. The specimens are kept in the herbaria ALTB, BAK, GSU, IBIW, LE, MSK-F, NSK, OMSK, SMR, SVER, TBI, TOB, VU, YSU, in the Algae collection of the Department of Mycology and Algology of Biological faculty of Moscow State University, or Vaucheria collection of the Laboratory for Algology at the Papanin Institute for Biology of Inland Waters of the Russian Academy of Sciences. Sequences of ITS1-5.8S-ITS2 fungal nrDNA regions of some specimens have been deposited in the GenBank.

The first records for Russia of one species of siphonous yellow-green algae, ascomycete, and lichenicolous fungus, and the first records for regions of Russia: nine species of siphonous yellow-green alga for the Arkhangelsk, Astrakhan, Moscow, Volgograd regions, two diatom species for the Tyumen Region, nine species of basidiomycetes for the Novgorod, Tomsk regions, and the Republic of Tuva, three species of lichenicolous fungi for the Orenburg Region and Krasnoyarsk Territory, 23 species of lichens for the Arkhangelsk, Irkutsk, Murmansk, Sakhalin regions, Altai, Buryatia and Komi republics, Altai and Khabarovsk territories, 15 species of mosses for the Arkhangelsk, Magadan, Orel, Voronezh regions, Kamchatka Territory, Republic of Tuva, and St. Petersburg, one species of liverwort for the Krasnoyarsk Territory are presented. The data on their localities, habitats, distribution are provided. The specimens are kept in the herbaria ALTB, AR, H, IBIW, IRK, KPABG, LE, MAG, NSK, PTZ, PZV, SMR, SYKO, VU, in the diatom collection of the Timiryazev Institute of Plant Physiology RAS, the Tobolsk complex scientific station RAS or Vaucheria collection of the Laboratory for Algology at the Papanin Institute for Biology of Inland Waters RAS. Sequences of ITS1-5.8S-ITS2 nrDNA regions of some specimens of fungi and ITS1-2 nrDNA and trnL-F cpDNA of one liverwort have been deposited in the GenBank.

A total of 81 fungal species including ten ascomycete and 71 basidiomycete species have been recorded for the first time from 19 administrative regions of Russia: Kabardino-Balkarian Republic (6), Republic of Crimea (6), Republic of Tyva (2), Perm Krai (8), Primorsky Krai (2), Arkhangelsk Oblast (2), Bryansk Oblast (1), Irkutsk Oblast (3), Murmansk Oblast (6), Novosibirsk Oblast (1), Oryol Oblast (1), Pskov Oblast (2), Tula Oblast (27), Tyumen Oblast (5), Ulyanovsk Oblast (1), Yaroslavl Oblast (1), Saint Petersburg Federal City (1), Sevastopol Federal City (3), and Khanty-Mansi Autonomous Okrug (4 species). An annotated species list containing the data on locality, substrate, habitat type, date of collection, and voucher numbers is provided. Berkleasmium conglobatum, Biporispora europaea, Heydenia arietina, Lopadostoma pouzarii, Navicella pileata, Trizodia acrobia (Ascomycota), and Callistosporium pseudofelleum, Coltricia confluens, Melanoleuca monticola (Basidiomycota) are reported as the first records in Russia. Clitopilus geminus, Crepidotus stenocystis, Flammulina populicola, Mycena luteovariegata, and Pholiotina longistipitata are recorded in Russia for the second time. Among them, Clitopilus geminus is a new species to European Russia, and Crepidotus stenocystis is a new one to the Asian part of Russia. Amanita mairei, Cortinarius integerrimus, Flammulina elastica, and Infundibulicybe gigas are reported for the third time. New data on rare and little-collected species Purpureodiscus subisabellinus and Hydnellum gracilipes is presented. Complete sequences of ITS1–5.8S–ITS2 nuclear ribosomal DNA for nine species reported have been generated and submitted to the GenBank database.

Three new species of myxomycetes are described in the genera Arcyria, Metatrichia and Tubifera. Each species is given a full description, along with details of ecology and distribution. They are compared to morphologically similar species, using both light and scanning electron microscopy. DNA extracted from the 18S nrDNA regions (SSU), confirmed the three new species.

A new Stemonitis species from Northern Asia is described and illustrated. The species was found in the Altai Territory, Russia. This new species clearly differs from previously known species by several morphological characters. The new species and four other species of the Stemonitis genus have the thickening and widening of the column apex—Stemonitis capillitionodosa, S. flavogenita, S. pseudoflavogenita, S. sichuanensis, which makes them a separate morphological group in the Stemonitis genus. However, four of the above listed species have warted and spinulose spore ornamentations, whereas the new species spore ornamentations are reticulate. The peridium of the new species is partially preserved in the form of a filmy collar at the base of the sporotheca, whereas the peridium of Stemonitis capillationodosa, S. flavogenita, S. pseudoflavogenita and S. sichuanensis is always fugacious. Scanning electron microfotographs of a new species of the Stemonitis genus and an updated original identification key for species of this genus around the world, which currently includes 23 taxa, are presented.

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

A total of 83 fungal species including one ascomycete (Helvella macropus) and 82 basidiomycete species have been recorded for the first time from 18 administrative regions of Russia: Republic of Buryatia (2), Republic of Dagestan (7), Republic of Mordovia (30), Republic of Tyva (6), Primorsky Krai (1), Zabaykalsky Krai (3), Arkhangelsk Oblast (5), Irkutsk Oblast (4), Kaluga Oblast (1), Leningrad Oblast (1), Murmansk Oblast (7), Nizhny Novgorod Oblast (1), Novgorod Oblast (3), Novosibirsk Oblast (2), Pskov Oblast (1), Tyumen Oblast (10), Saint Petersburg Federal City (1), and Khanty-Mansi Autonomous Okrug (1 species). An annotated species list containing the data on locality, substrate, habitat type, date of collection, and voucher numbers is provided. Pluteus vellingae is reported as the first record in Russia. Aurantiporus priscus, Bolbitius sibiricus, and Mycopan scabripes are recorded in Russia for the second time. Hypsizygus marmoreus is reported for the third time. New data on little-collected fungal species such as Botryobasidium botryoideum, Fibrodontia gossypina, Lycoperdon rupicola, Neohypochnicium cremicolor, Postia luteocaesia, Psathyrella gordonii, and Xylodon pruinosus, is presented. Complete sequences of ITS1–5.8S–ITS2 nuclear ribosomal DNA for 16 species reported have been generated and submitted to the GenBank database.

We described a new Tulostoma species based on morphological and molecular data. Its characteristic features are creamy-brownish to grayish white fruiting bodies, spore-sac of small size, stem slender, gleba orange brown, spores are large, subglobose, regularly verrucose, up to 10.6 μm. Warts are large, 6–7 in number on the visible side of spore, up to 0.9 μm length, more or less isolated or merging into groups with small warts or forming ridge-like anastomoses at the base visible on SEM. It grows in scattered shrub communities with Caragana pygmaea, on dry sandy soil in south of Siberia. Based on the sequences of internal transcribed spacer (ITS1-5.8S-ITS2 = ITS) and D1/D2 domain of large subunit (28S) of nuc ribosomal DNA, we reconstructed a phylogeny of the genus Tulostoma. We present the detailed description of new species, color photos of fruiting bodies, light microscopy of anatomical characters, and analysis of morphological features in comparison with related species. To differentiate species of the genus Tulostoma necessary to use scanning electron microscopy. Therefore, we present photographs of spores of a new species under SEM. The DNA sequences obtained by us can also be used for identification of new species.

Изучено таксономическое разнообразие эпифитных миксомицетов в зависимости от высоты ствола на живых древесных растениях в арборетуме Центрального сибирского ботанического сада СО РАН. Все образцы миксомицетов получены при помощи культивирования методом влажных камер в лаборатории в чашках Петри. Отбор проб коры с живых древесных растений проводился на высоте стволов от 0 до 15 м от уровня почвы. В эксперименте участвовали девять видов лиственных древесных растений-интродуцентов: Fraxinus pennsylvanica, Prunus maackii, Populus alba, Salix alba, S. pentandra, S. triandra, Sorbus aucuparia, Tilia cordata, Junglans mandshuria. В результате анализа данных выявлен 51 вид миксомицетов. Отмечено, что видовой состав миксомицетов на изученных древесных растениях значительно отличается от такового на аборигенных породах деревьев, произрастающих на территории ботанического сада. Выявлены предположительно два новых вида для науки из родов Arcyria и Trichia, три вида - новые для России (Didymium clavodecus, D. ovoideum, D. synsporon), восемнадцать видов - новые для Новосибирской области. На коре, собранной у корней деревьев, обнаружено 25 видов миксомицетов, на высоте 1,5 м - 18, на высоте 5 м - 32, на высоте 10 м - 14, на высоте 15 м - 17 видов. Установлено изменение таксономического состава сообществ миксомицетов в зависимости от высоты ствола. Представители рода Perichaena встречаются на всех высотах, но наибольшее видовое разнообразие отмечено в прикорневой части, где собрано 7 видов, тогда как виды рода Didymiumимеют максимальное видовое разнообразие (6 видов) на высоте 5 м, включая три новых для России вида, выявленных только на этой высоте. Распределение числа собранных образцов по высотам показало, что наиболее обильно заселена кора живых древесных растений на высоте 5 м (72 образца) и в прикорневой части (50 образцов). The taxonomic diversity of epiphytic myxomycetes on living woody plants in the arboretum of the Central Siberian Botanical Garden SB RAS was studied. The regularity of the distribution community of epiphytic myxomycetes by trunk height has been established. All samples of myxomycetes were obtained by cultivation moist chambers in Petri dishes in the laboratory. Bark sampling from live woody plants was carried out at the height of the trunks from 0 to 15 meters from the soil level. Nine species of deciduous woody introduced plants participated in the experiment: Fraxinus pennsylvanica, Prunus maackii, Populus alba, Salix alba, S. pentandra, S. triandra, Sorbus aucuparia, Tilia cordata, Junglans mandshuria. Fifty-one species of myxomycetes have been identified. The species composition of myxomycetes on the studied woody plants differs significantly from that on native tree species growing on the territory of the botanical garden. Two species have been identified as new to science from the genera Arcyria and Trichia, three species are new to Russia (Didymium clavodecus, D. ovoideum, D. synsporon), eighteen species are new to the Novosibirsk region. The change in the taxonomic composition of myxomycetes community′s correlates with the height from the soil surface. Representatives of the genus Perichaena are found at all altitudes, but the greatest species diversity is noted in the basal part. There are 7 species noted here, while the species of the genus Didymium have the maximum species diversity (6 species) at an altitude of 5 meters, including 3 species new to Russia, noted only at this altitude. The distribution of the number of collected samples by height showed that the bark of living woody plants is most abundantly populated at a height of 5 meters (72 samples) and in the basal part (50 samples).

The taxonomic diversity of epiphytic myxomycetes depending on the height of the trunk on living woody plants in the arboretum of the Central Siberian Botanical Garden, Siberian Branch, Russian Academy of Sciences (CSBG SB RAS), has been studied. All samples of myxomycetes are obtained by cultivation by the method of moist chambers in the laboratory in Petri dishes. Sampling of bark from living woody plants is carried out at a height of trunks from 0 to 15 m from the soil level. The experiment involves nine species of introduced deciduous woody plants Fraxinus pennsylvanica, Prunus maackii, Populus alba, Salix alba, S. pentandra, S. triandra, Sorbus aucuparia, Tilia cordata, and Jungles mandshurica . As a result of data analysis, 51 species of myxomycetes are revealed. It is noted that the species composition of myxomycetes on the studied woody plants differs significantly from that on native tree species growing on the territory of the botanical garden. Two species of the genus Arcyria and Trichia new for science, 3 species new to Russia ( Didymium clavodecus , D. ovoideum , and D. synsporon ), and 18 species new for Novosibirsk Region have been identified. A description of species new to science is given; photographs of sporocarps, spores, and capillitium studied using light and scanning electron microscopy are provided; and a comparison with morphologically similar species is made. A change in the taxonomic composition of myxomycete communities depending on the height of the trunk is established. On the bark collected at the roots of trees, 25 species of myxomycetes have been identified; at a height of 1.5 m, 18; at a height of 5 m, 32; at a height of 10 m, 14; and, at a height of 15 m, 17. Representatives of the genus Perichaena are found at all heights, but the greatest species diversity is noted in the basal part, where seven species are noted, while species of the genus Didymium have the maximum species diversity (six species) at a height of 5 m, including three species new to Russia, noted only at this height. The distribution of the number of samples by height showed that the bark of living woody plants is most abundantly populated at a height of 5 m (72 samples) and at the root (50 samples).

A new Leccinum species has been described based on morphological and molecular data. Its characteristic features are medium-sized basidiomata, pores cream to cinnamon-brown, and a dark cream pileus with a light marble pattern. It grows under Salix bebbiana and occurs in southeast Altay Mts. We present detailed descriptions with color photos of fresh fruiting bodies, SEM photos of spores, molecular phylogeny, and an analysis of the characteristic nucleotide sequences compared to the related species.

Recent phylogenetic studies indicate taxonomic uncertainty of some species in the genera Arcyria (Arcyriaceae) and Trichia (Trichiaceae). For example, a phylogenetic position of Trichia brunnea still is not resolved. We revised a taxonomic position of this species based on extensively sampled 18S nrDNA sequences, as well as a morphological analysis of sporocarps and spores. The nomenclatural history of T. brunnea is briefly presented and acomprehensive morphological description of the species is provided. In result, we support the transfer of T.brunnea to Arcyria. Because of the name Arcyria brunnea exists already, we propose a new name, A. brunneo-iridescens (= Trichia brunnea).

The ability to determine the spatial distribution of rare fungal species is critical to understanding the environmental factors that affect them. Maximum entropy (MaxEnt) spatial distribution modeling solves this problem by allowing inferences about the distribution of species in a gradient of environmental factors based on occurrence data. To identify patterns of spatial distribution based on objective data, models of the potential geographical distribution of the rare polyporoid fungus of Picipes rhizophilus under current conditions (~1950–2000) and with predicted future climate changes (2100 AD) on a global scale have been created. The species Picipes rhizophilus can develop in steppe habitats of both plains and mountains. Most known habitats of the species are found in the ecoregions that make up the temperate grasslands, savannas and shrublands, Mediterranean forests, woodlands and scrubs, and desert and xeric shrubland biomes. The species is not associated with forest biomes, but it can be found in habitats located on their territory, subject to the processes of climate aridization and desertification. The species Picipes rhizophilus can develop in steppe habitats of both plains and mountains. Modeling the potential distribution of the species under the selected climatic scenario has shown the dynamics of changes in its range. The species-friendly climate area will increase in the North American continent, while there will be no significant changes in Europe and adjacent areas of Africa. In the most favorable territory for the species, located in the basin of the Western Manych River, conditions will become less favorable. There will be a local shift in the areas of potential distribution in the Asian part.

Molecular genetic studies of the morphological genus Polyporus s. l. recently made it possible to detect the presence of several phylogenetic lineages among its representatives, to clarify the boundaries and scope of the taxon. Species with a black cuticle covering the stipe of the basidiomata have been separated in the genus Picipes. Most representatives of this genus are known from China. In Russia, out of 29 species of the genus, there are three widespread species of Picipes – P. badius, P. melanopus, P. tubaeformis, and one rare species – P. rhizophilus. Phylogenetic analysis of the nucleotide sequences of selected nrDNA loci obtained from the herbarium materials collected by us, originally assigned to Picipes melanopus, revealed the presence of two rare, morphologically similar species, P. submelanopus and P. ulleungensis, which turned out to be new to Russia. Picipes submelanopus is characterized by a terrestrial fruiting bodies and differentiated from P. melanopus, that grows on dead wood. All specimens of fruiting bodies of Picipes submelanopus collected by us in Western Siberia were found on the roots of woody plants, as in the typе locality in China. Picipes ulleungensis differs from P. melanopus by larger fruiting bodies, slightly larger pores. In order to differentiate Picipes submelanopus and P. ulleungensis from morphologically similar species, in addition to morphological characters and ecological preferences, it is desirable to use DNA barcoding methods.

Recent phylogenetic studies indicate taxonomic uncertainty of some species in the genera Arcyria (Arcyriaceae) and Trichia (Trichiaceae). For example, a phylogenetic position of Trichia brunnea still is not resolved. We revised a taxonomic position of this species based on extensively sampled 18S nrDNA sequences, as well as a morphological analysis of sporocarps and spores. The nomenclatural history of T. brunnea is briefly presented and acomprehensive morphological description of the species is provided. In result, we support the transfer of T.brunnea to Arcyria. Because of the name Arcyria brunnea exists already, we propose a new name, A. brunneo-iridescens (= Trichia brunnea).

First records for Russia of naviculoid diatom from the Yaroslavl Region, and micromycetes from the Republic of North Ossetia — Alania, green alga for the Leningrad Region and Yamal-Nenets Autonomous Area, fragilarioid diatom for the Kaliningrad Region, red alga for the Nizhny Novgorod Region, cyanoprokaryota for the Leningrad Region and Chukotka Autonomous Okrug, and crustaceous red alga for the Autonomous Republic of Adjara of Georgia, macromycetes for the Leningrad Region, Khanty-Mansi Autonomous Area — Yugra, Republic of Tuva, Trans-Baikal Territory, myxomycetes for the Trans-Baikal Territory, lichens and allied fungi for the Murmansk and Tver regions, republics of Karelia and Tuva, Yamal-Nenets Autonomous Area, Altai and Khabarovsk territories, cyanolichen for the Urals and the Orenburg Region, mosses for the Lipetsk Region, republics of Ingushetia and Buryatia, Krasnoyarsk and Trans-Baikal territories are presented. The data on their localities, habitats, distribution are provided. The specimens are kept in the herbaria ALTB, GSU, IBIW, IRK, KPABG, LE, MHA, MW, NNSU, NSK, PZV, TBI, UUH, VU, YSU, and the Diatom collection of the Laboratory for Algology of IBIW RAS. Sequences of 16S, and 16S–23S ITS cyanobacterial RNA regions, ITS1-5.8S-ITS2 fungal and ITS1-2 moss nrDNA regions of some specimens have been deposited in the GenBank.

Diacheopsis is a small genus of myxomycetes with about 18 species reported around the world. Diacheopsis species are recorded in Eurasia, North and South America, Australia and New Zealand. A new species of Diacheopsis from coniferous forest of Asian part of Russia is described and illustrated. The new species occurred on a dead tree of Pinus sylvestris. It differs from all known species of the genus Diacheopsis in the sporocarps being drab grey, beige colours and the spores have warts up to 0.4 mu m in total height. By SEM observations the warts are dense, abundant and regularly distributed, welldeveloped, with coralloid projections on the apex of each wart. Sequences for SSU rDNA of the new Diacheopsis species were generated. Preliminary phylogenetic analyses based on partial 18S rDNA sequences support the establishment of the new species.