With this paper we continue an annual series, the main purpose of which is to make significant floristic findings from Russia and neighboring countries more visible in Russia and abroad. In total, this paper presents new records for 60 vascular plant species from 5 Eurasian countries, obtained during field explorations, as well as during taxonomic revisions of herbarium materials. For the first time, Clematis tangutica, Cynoglossum asperrimum, and Potentilla hubsugulica are recorded for Russia, Azolla filiculoides for Uzbekistan and Central Asia, Hackelia popovii for China and Kyrgyzstan, Chamaerhodos erecta for Kyrgyzstan, Astragalus tatjanae, Centaurea tadshicorum, Cynosurus echinatus, Epipactis persica, Eremurus × decoloratus, Euphrasia drosophylla, Fritillaria rugillosa, Paspalum distichum, Plagiobasis centauroides for Uzbekistan, Poa turfosa for the Yamal-Nenets Autonomous Area, as well as for the Siberian arctic-hyparctic floristic province and the entire Arctic and Hyparctic Asia, Carduus × semiperegrinus, Reynoutria × bohemica for Siberia, Artemisia obtusiloba subsp. martjanovii for Baikal Siberia, Callitriche cophocarpa for the Republic of Altai, Krasnoyarsk Territory, Kemerovo and Tomsk regions, Prunella vulgaris for the Magadan Region and Chukotka Autonomous Area, Cynoglossum officinale for the Republic of Buryatia, Carex buxbaumii, Epipactis microphylla for the Republic of Dagestan, Tripleurospermum elongatum for the Kabardino-Balkaria Republic, Anthyllis vulneraria, Malva moschata, Menispermum dauricum, Persicaria orientalis, Petrosedum rupestre, Rubus occidentalis, R. procerus, Vitis amurensis for the Republic of Mordovia, Oxytropis caespitosa for the Tyva Republic, Myosotis sparsiflora, Pedicularis spicata for the Magadan Region and northern part of the Russian Far East, Astragalus arkalycensis, Bolboschoenus laticarpus, Limonium suffruticosum for the Omsk Region, Arabidopsis arenosa for the Tomsk Region, Asparagus pallasii, Astragalus cicer, Sisymbrium altissimum for the Tyumen Region, Thymus dimorphus for the Volgograd Region, Botrychium boreale for the Vologda Region, Thymus kondratjukii for the Voronezh Region, Rudbeckia triloba, Stachys byzantina for the Rostov Region, Geranium turczaninovii for the Almaty Region of Kazakhstan, Potentilla thuringiaca for the Karaganda Region of Kazakhstan and the Kazakh uplands (Kazakhskiy Melkosopochnik), Egeria densa for the Hunan Province and Elodea nuttallii for the Jiang su Province of China.

Japanese cattail (Typha japonica Miq., section Ebracteolatae) has been restored to its valid taxonomic status and listed as one of the floras of the outmost southern Sakhalin and Kuril Islands for the first time. These are the first records of T. japonica in Russia. With the unique geography and current molecular data (rpl32-trnL intergenic spacer), the latter cattail's combination of morphological characters clearly distinguishes it from all other species of sect. Ebracteolatae (including T. caspica Pobed., T. elata Boreau, and T. tzvelevii Mavrodiev), and also from all currently known bract-less species of Typha, including the Eastern cattail (T. orientalis C.Presl.), with which T. japonica was arbitrarily synonymized previously.

Typhashipunovii Mavrodiev, Kapit. et Belyakov (Typha sect. Ebracteolatae Graebn., Typhaceae) is described as a new species for science. This cattail is an endemic to Yuri Island (Lesser Kuril Chain, Russian Far East) and likely results from the hybridization of T. latifolia L. and T. japonica Miq. The species is named after the remarkable Russian and American botanist Professor A. B. Shipunov (1965–2022).

Typha lepechinii, a new species from European Russia, is described. In terms of the external morphology, it is similar to T. shuttleworthii but differs from the latter by the shape of female inflorescence, wider leaf blades and geographical distribution. Like T. shuttleworthii, T. lepechinii is clearly distinct from all other cattails of T. sect. Ebracteolatae due to its short male inflorescence that is 2–4 times shorter than the contiguous female inflorescence. The spatial disjunction of this new species from the main distribution range of predominantly European T. shuttleworthii is significant: T. lepechinii is an endemic of the outmost East of the Russian Plain, in particular, the regions of Middle and Southern Cis-Ural region (basin of the Middle and Lower Kama). In terms of the political administrative borders, this new cattail was found in the Udmurt Republic, the Republics of Tatarstan and Bashkortostan, the parts of the Russian Federation. From the elementary comparative molecular standpoint, T. lepechinii is different from its sister T. shuttleworthii due to four single nucleotide positions and two indels of the rpl32 gene and rpl32-trnL intergenic spacer (cpDNA). The new cattail is named after I. I. Lepechin (1737–1802)—a Russian scientist-encyclopedist whose primary botanical interest focused on the regions of Ural and Siberia.

The highest reed (Phragmites altissimus) is a species with Eurasian-North African range, recently expanding its area of distribution in northern direction (Kapitonova, 2016; Golovanov et al., 2019; Tzvelev, Probatova, 2019). It is known that in the forest zone of both the European and Asian parts of Russia, the highest reed is found only as an invasive plant (Tzvelev, 2011). Communities dominated by P. altissimus are known both within its natural range and in the area of invasion. However, in syntaxonomic reviews, cenoses with this species dominanation are traditionally included by the authors in the ass. Phragmitetum australis Savich 1926 (Golub et al., 1991, 2015; Golub, Chorbadze, 1995; Kipriyanova, 2008; Vegetaсе…, 2011; Golovanov, Abramova, 2012; Chepinoga, 2015). The aim of this work is to establish the syntaxonomic status of communities formed by P. altissimus. The work used 65 geobotanical relevés made within the primary range of the P. altissimus (Astrakhan region and the south of the Tyumen region within the forest-steppe zone) and in the area of its secondary range (the Udmurtian Republic and the taiga zone of the Tyumen region). The relevés were introduced into database developed on the basis of the TURBOVEG program (Hennekens, 1996) and processed using the JUICE program (Tichý, 2002). To assess the abundance of species on the sample plots described, the J. Braun-Blanquet abundance scale was used with the following abundance-coverage scores: r — the species is extremely rare with insignificant coverage, + — the species is rare, the degree of coverage is small, 1 — the number of individuals is large, the degree of coverage is small or the individuals are sparse, but the coverage is large, 2 — the number of individuals is large, the projective cover is from 5 to 25 %, 3 — the number of individuals is any, the projective cover is from 25 to 50 %, 4 — the number of individuals is any, the projective cover is from 50 to 75 %, the number of individuals is any, the cover is more than 75 % (Mirkin et al., 1989). Syntaxonomic analysis was performed using the approach suggested by J. Braun-Blanquet (1964). The names of syntaxa are given according to the “International Code of Phytosociological Nomenclature” (Theurillat et al., 2021). The system of higher syntaxa is given in accordance with “Hierarchical floristic classification…” (Mucina et al., 2016). To identify the main factors determining the differentiation and distribution of the studied communities, the NMDS method was used. For each syntaxon, using the IBIS program (Zverev, 2007), the average indicator values were calculated according to the ecological scales of D. N. Tsyganov (Tsyganov, 1983): soil moisture (Hd), soil nitrogen richness (Nt), and illumination-shading (Lc). Processing was carried out in the PC-ORD v. 6.0 (McCune et Mefford, 2011). The studied communities were assigned to the new ass. Phragmitetum altissimi, 4 subassociations, and 7 variants. The nomenclature type of association is relevé N 20 in Table 3. It is shown that in the communities of the ass. Phragmitetum altissimi, the number of species ranges from 1 to 15 (in average 4). The total projective cover varies from 20 to 100 %. The height of the herbage is 2–5 m; four to five substages are distinguished in it. In the first substage, in addition to P. altissimus, the presence of large cattails (Typha austro-orientalis, T. linnaei, T. latifolia, T. tichomirovii), as well as tall grasses (Calamagrostis pseudophragmites, Phalaroides arundinacea) and Scirpus hippolyti was recorded. The second substage is formed by grasses of medium height (up to 0.8–1 m): Carex riparia, Sparganium erectum, Oenanthe aquatica, Stachys palustris, Lythrum salicaria, Althaea officinalis, Persicaria maculata, P. minor, Cirsium setosum, much less often — Impatiens glandulifera, Urtica dioica, etc. The third substage is not always developed, as a rule, it is very sparse, formed by surface hygrophilic grasses usually no more than 10–20 (25) cm in height (Rorippa amphibia, Galium palustre, Potentilla reptans, Tussilago farfara). The fourth substage is usually sparse; it is formed by rooting (Nymphaea alba) or non-rooting (Salvinia natans, Lemna minor, L. turionifera, Spirodela polyrhiza, Hydrocharis morsus-ranae) hydrophytes floating on the water surface. The fifth substage is formed by non-rooting hydrophytes completely submerged in water (Lemna trisulca, Ceratophyllum demersum), as well as Drepanocladus aduncus and Cladophora sp. Often are out-of-tier vinegrasses (Calystegia sepium, Cynanchum acutum); sprouts of willows (Salix cinerea, S. alba) are also quite common. Communities dominated by P. altissimus are formed in coastal shallow waters, including swampy, stagnant or weakly flowing water bodies with stable or slightly fluctuating water level, with tight bottom or small, sometimes quite thick layer of silty-detrital deposits. Communities also are formed on damp or swampy shores, including disturbed, permanent or temporarily drying water bodies. In anthropogenic habitats, they are developed in watered and damp depressions (ditches), in shallow waters and damp banks of ponds, reservoirs, man-made water bodies, excavations, and watered quarries. Cenoses of the subass. P. a. typicum (Fig. 2) are formed on coastal shallow waters and damp shores of permanent or temporarily drying water bodies, including disturbed ones. Communities of the subass. P. a. caricetosum ripariae are characteristic of swampy coastal areas and swampy shores of water bodies with stable or slightly fluctuating water level; they are distinguished by sparse and relatively low upper substage of the herbage composed of P. altissimus. Communities of the subass. P. a. phalaroidetosum arundinaceae, which occcur in coastal shallow waters (up to 5–10 cm deep) and damp shores of water bodies, are characterized by rather dense upper substage of herbage and temporary drying of the substrate during the growing season. Communities of the subass. P. a. lemnetosum trisulcae are formed in water bodies, the water level in which is subject to fluctuations during the growing season; they are characterized by dense substage of grasses submerged in water and significant thickness of silty bottom sediments.. Communities of the ass. Phragmitetum altissimi are distributed within the primary range of P. altissimus — in the south of the European part of Russia (Astrakhan region) and in the forest-steppe zone of Western Siberia (Tyumen region). They are also found in the area of invasion of the highest reed — in the east of the Russian Plain (Udmurtian Republic), in the taiga zone of Western Siberia (Tyumen region) (Fig. 1). In the secondary range of the highest reed, only cenoses attributed to the subass. P. a. typicum are recorded. Communities belonging to all four subassociations are widespread within the primary range of P. altissimus on the territory of the European part of Russia.

With this paper we continue a new annual series, the main purpose of which is to make significant floristic findings from Russia and neighboring countries more visible in Russia and abroad. In total, this paper presents new records for 48 vascular plant species from 6 Eurasian countries, obtained during field explorations, as well as during taxonomic revisions of herbarium materials. For the first time, a new locality of Leontopodium leiolepis is recorded for Russia, Rheum uzengukuushi for China, Rorippa prolifera for Lithuania, Lappula marginata for Kyrgyzstan and Tajikistan, Anthriscus caucalis, Chenopodium ficifolium, Euphorbia prostrata for Uzbekistan, Adonis × hybrida, Potamogeton × franconicus, Solidago × niederederi for the Asian part of Russia, Echinochloa esculenta, Poa jamalinensis, Puccinellia poecilantha for Siberia, Potentilla intermedia for the Caucasus, Rhynchospora alba for the Russian part of Altai, Poa sphondylodes, Veronica beccabunga for Eastern Siberia, Asclepias syriaca for the Republic of Altai, Chimaphila umbellata, Orobanche korshinskyi, Veronica scutellata for the Republic of Buryatia, Cirsium alatum, Thalictrum simplex for the Republic of Crimea, Thymus rariflorus, Th. terekensis for the Republic of Ingushetia, Berberis thunbergii, Crataegus maximowiczii, Prunus serotina for the Republic of Mordovia, Oenothera villosa for the Republic of Tatarstan, Astragalus sulcatus, Galium mollugo for the Republic of Tyva, Phragmites altissimus for the Chelyabinsk Region, Senecio dubitabilis for the Magadan Region, Asclepias syriaca, Galatella villosa, Potentilla recta for the Novosibirsk Region, Dodartia orientalis for the Omsk Region, Viola hultenii for the Sakhalin Region, Phragmites tzvelevii for the Samara Region and the Middle Volga, Jacobaea ferganensis for the Samara Region, Carex media, Impatiens parviflora for the Tyumen Region. There are some more findings which are not new for the region but they contribute significantly to the understanding of species distribution.

The flora of water bodies and watercourses of the city of Tobolsk is composed of 266 species of macrophytes, including both higher plants and macroalgae. This indicator is higher than the number of macrophyte species in the previously studied cities of the Vyatka-Kama Cis-Urals, while the ratio of ecological groups remains the same. The taxonomic richness and ecological diversity of the hydrophilic component of urban floras depends on a number of factors: 1) the presence and diversity within the urban landscape of habitats inhabited by aquatic and semi-aquatic plants; 2) the position of the city’s territory in the system of regional land subdivisions within the physical-geographical country; 3) the age of the city. The composition of macrophytes is not affected by the size of the urban area and the geographical position of the city within a region.

Data on the species diversity and distribution of pteridophytes (lycophytes and ferns) in the Urals and adjacent areas are presented. The dataset includes 13,742 observations of two classes Lycopodiopsida and Polypodiopsida. In total, the dataset contains information on 16 families, 28 generas, 65 species, four subspecies and nine interspecies hybrids. All records are for lycophytes and ferns collected over 170 years between 1853 and 2021. The dataset presented is based on herbarium specimens, published data and field research conducted by the authors. This dataset is the first and important step towards generalising information on the current diversity and geographical distribution of pteridophytes in the Urals and adjacent areas. The dataset contains 13,742 records of 65 species of pteridophytes occurrences in the Urals and adjacent territories: Udmurt Republic (42,100 km2); Perm Krai (160,600 km2); Sverdlovsk Oblast (194,800 km2); Chelyabinsk Oblast (87,900 km2); Republic of Bashkortostan (143,600 km2); Tyumen Oblast (160,100 km2); Yamalo-Nenets Autonomous Okrug (769,300 km2); Khanty-Mansi Autonomous Okrug (534,800km2) and Kurgan Oblast (71,500 km2). Each record includes a geographical description of the place of discovery and habitat, year of discovery, author of the finding and determination, as well as a link to a literary source (if the data were published) or the place of storage of the herbarium specimen. The presented dataset supplements the information on the occurrence of pteridophytes in the Russian Federation as a whole and clarifies their distribution in the Urals.

With this paper we continue a new annual series, the main purpose of which is to make significant floristic findings from Russia and neighboring countries more visible in Russia and abroad. In total, this paper presents new records for 38 vascular plant species from 7 Eurasian countries, obtained during field explorations, as well as during taxonomic revisions of herbarium materials. For the first time, new locality of Rochelia bungei is recorded for Europe and West Kazakhstan Region of Kazakhstan, Arnebia obovata for China and Kazakhstan, A. olgae for China, Ballota nigra for Kazakhstan and the Asian part of Russia, Potentilla chalchorum, P. tschimganica and P. doujonneana for Kyrgyzstan, Lappula heteracantha for Tajikistan, Hedysarum talassicum for Uzbekistan, Linaria grjunerae, Silene cserei for Siberia, Dianthus × courtoisii, Genista tinctoria, Verbascum phoeniceum for Eastern Siberia, Drosera × obovata, Pseudopodospermum strictum, Trollius austrosibiricus for the Altai Republic, Diarthron linifolium for the Republic of Buryatia, Dactylorhiza iberica, Epipactis condensata for the Republic of Daghestan, Platycladus orientalis for the Kabardino- Balkarian Republic, Diphasiastrum × zeilleri for the Republic of Mordovia, Typha latifolia for the Magadan Region, Senecio viscosus for the Novosibirsk Region, Solanum physalifolium for the Omsk Region, Echinops exaltatus for the Middle Volga, Lavandula angustifolia for the Samara Region, Galium affrenum for the Saratov Region, Bidens frondosa, Elatine triandra, Eleocharis klingei, Jacobaea grandidentata, Rhinanthus songaricus and Vicia megalotropis for the Tyumen Region, Bunias cochlearioides, Thalictrum ussuriense for the Inner Mongolia Autonomous Region of China, Isoëtes echinospora for the Yamal-Nenets Autonomous Area, Potentilla × bishkekensis for Issyk-Kul and Osh Regions of Kyrgyzstan.

УДК 581.9(571.1) О. А. КапитоноваНовые находки редких и охраняемых видов сосудистых растений на юге Тюменской области (по материалам 2016-2020 гг.)Продолжающиеся флористические исследования автора на территории Тюменской области дают новый материал по распространению видов сосудистых растений в регионе.Ежегодно выявляются новые местонахождения редких видов, в том числе занесенных в Красные книги Тюменской области и Российской Федерации.В статье содержатся сведения о новых находках видов сосудистых растений на территории Тюменской области, ранее не приводившихся для указанных административных районов, выявленных автором в период с 2016 по 2020 г.Представлены материалы по 70 видам, включая 7 охраняемых на территории области видов (Actaea spicata, Allium microdictyon, Carex arnellii, Dactylorhiza russowii, Neottia nidus avis, Scorzonera parviflora, Silene sibirica) и 2 заносных вида (Echinochloa crusgalli, Phragmites altissimus).Для каждого вида указаны точные сведения о местонахождении, а для охраняемых видов -категория редкости в соответствии с региональной Красной книгой.Для охраняемых, а также некоторых редких видов дается краткая аннотация.Ключевые слова: флора,

The flora of water bodies and watercourses in urban territories rarely becomes the object of special research. In the period from 1995 to 2015, we studied the flora of aquatic and semi-aquatic habitats (macrophyte flora) of six cities of the Vyatka-Kama Cis-Urals (VKCU) located on the territory of the Udmurt Republic (eastern European part of Russia): Izhevsk, Glazov, Sarapul, Votkinsk, Mozhga and Kambarka. The studied cities differ in their history, economy, size of the territory and population. It has been revealed that the macrophyte flora of the studied cities was composed of 302 species from 135 genera and 64 families, which makes up 80.3% of the species composition of the macrophyte flora of the VKCU. Izhevsk, the largest of the studied cities, has the richest hydrophilic flora (257 species). In the flora of the water bodies and watercourses of Glazov, 197 species were identified, in Sarapul – 153, in Votkinsk – 194, in Mozhga – 122 species. Kambarka, the smallest of the studied cities, has the second largest macrophyte flora (198 species). It has been established that in the macrophyte flora of the studied urbanized territories, the proportion of hydrophytes (“aquatic core” of the flora) ranges from 13.93% to 20.2% of the species composition of the flora. This is significantly lower than that in the macrophyte flora of the entire territory of the VKCU, where hydrophytes make up 25%. The reduction in the number of species of the “aquatic core” is due to the incomplete representation of ecotopes inhabited by hydrophytes on the territory of cities, as well as the pollution and transformation of their characteristic habitats within urban landscapes. This underlines the vulnerability of the “aquatic core” of the flora. In addition, rare and protected species are represented in the macrophyte flora of cities, the growth of which is often associated with large urban water bodies – factory reservoir ponds. It is concluded that the taxonomic richness of the studied flora depends not so much on the size of urban territories and their geographical location within the region under consideration, but on the presence and diversity of ecotopes inhabited by aquatic and semi-aquatic plants.

The growth of 6 species of the genus Utricularia has been shown for the territory of Western Siberia: U. vulgaris, U. macrorhiza, U. australis, U. minor, U. intermedia and U. ochroleuca. The distribution of species in the region is discussed, and their habitats are characterized. Special attention is paid to the diagnostic signs of bladderworts. It was noted that three of the six species indicated for Western Siberia (U. macrorhiza, U. australis, U. ochroleuca) have single locations within the region.

Relevance. The studies are determined by the need to find the sensitive technogenesis indicators, which elemental composition can show the ecological and geochemical situation of the territory. Mercury have negative toxicological influence on living organism. Biological objects at the beginning of food chain could be informative and objective indicators of environmental situation and can have important information for further predictions. The aim of the research is to determine the indicator abilities of Lemnaceae family aquatic plants to the ecological and geochemical situation of various urbanized territories in Russia by studying concentration of mercury. Objects: an aquatic plant of the duckweed family (Lemnaceae), characterized by widespread occurrence, high biomass growth rate and tolerance to climatic environmental conditions. Methodology. The study was carried out according to a single methodology in 65 settlements from 46 regions of the Russian Federation. The determination of gross mercury in duckweed was carried out by atomic absorption spectrometry. Results. The role of aquatic plant of the duckweed family as a geo-indicator of technogenesis is considered. The distribution of mercury in macrophyte from the study area was discovered, the average mercury content in duckweed for Russia (average median - 14,7 ng/g, arithmetic average - 18 ng/g) was calculated. The abnormally high concentrations of mercury were determined in an aquatic plant from the Stavlopol Krai, the Republic of North Ossetia-Alania and Bashkorkostan, Kirov and Kemerovo Regions. The ecological and geochemical situation in these territories may be influenced by technogenic factors, such as chlorine-hydroxide production. The regional specificity of the Tomsk region were studied individually. The influence of the Northern industrial zone was particularly studied there.

The article contains information on five species and three hybrids (Potamogeton × acutus, Potamogeton × pseudolacunatus, Stuckenia chakassiensis × S. macrocarpa) of vascular plants new to the Tyumen Region; seven of them are hydrophyte and one is a semi-aquatic species. We provided the occurrence data on 37 plant species not previously known in examined administrative districts of the Tyumen region, including four protected (Cypripedium macranthos, Pedicularis dasystachys, Ranunculus silvisteppaceus, Zannichellia repens) and four alien species (Elodea canadensis, Galega orientalis, Impatiens glandulifera, Phragmites altissimus).

The purpose of the research is the studying of the flora of waterbodies and watercourses of the city of Tobolsk (Tyumen Region, Russia). The work is based on the author's hydrobotanical studies, which have been carried out in the city since 2015. Herbarium materials from the territory of the city of Tobolsk and literature sources were also studied. The macrophyte flora of the city of Tobolsk has 253 species of higher plants (of bryophytes and vascular plants) from 123 genera and 61 families, including 27 species of mosses and liverworts. In the ecological structure of the flora the semi-aquatic plants are dominated, and the proportion of hydrophytes is only 17.0% (43 species). In the composition of studied flora four hybrid taxa (Nuphar x spenneriana, Potamogeton x acutus, Salix x fragilis, Utricularia x ochroleuca), as well as six protected species in the Tyumen Region (Acorus calamus, Epipactis palustris, Lycopodiella inundata, Nuphar pumila, Nymphaea tetragona, Zannichellia repens) were noted.