2025 Ecosystem Transformation 8 (2), 115-136

Distribution, ecology and conservation of the Potamogeton alpinus Balb. (Potamogetonaceae Bercht. & J. Presl) on the southern border of range in European Russia

Ershkova E.V. , Esina I.G., Grishutkin O.G., Chkalov A.V.

Potamogeton alpinus Balb. is a Holarctic arctoboreal aquatic plant species. In European Russia, it is a common species in the tundra and taiga. We have found that the southern border of the main part of the range of P. alpinus in the European Russia coincides with the southern border of the natural zone of mixed and broad-leaved forests. In the forest-steppe zone, there are single locations in the water bodies of large forests. In the eastern part of European Russia, the species is confined to the southern border of coniferous and mixed forests. Single locations of P. alpinus have also been recorded in lakes of the mountainous part of the Caucasus. In the north-east of European Russia, it grows on clay- and sandysilty soils of lakes, oxbow lakes, ponds and slow-flowing rivers. It can be found in puddles and quarries, on damp pastures, in depressions between hummocks, in swamps, in streams, ditches, sometimes in fast rivers of mountains with a rocky bottom. To the south, it grows mainly in small rivers and streams, as well as associated reservoirs. It is also found in karst lakes, overgrown developed peatlands. It prefers sandy or sandy-silty grounds, with a low number of biogenic elements. It has been revealed that the main factors in the reduction of the number of species are pollution of reservoirs and watercourses, changes in hydrophysical parameters of water, оvergrowing of reservoirs. It is neсessary to conserve the populations of P. alpinus on the border of the range. Only some of the P. alpinus populations in the forest-steppe are located in the protected areas of European Russia. In order to conserve, it is need to include P. alpinus to the Red Lists of Tambov, Tula, Bryansk, Kursk, Voronezh, Samara, Orel, Smolensk, Kaluga, Ryazan regions; to monitor the state of the species’ population and it habitats annually, search for new plant locations and take them under protection. Employees of environmental departments must constantly monitor the obligations of regional residents to comply with regulations of the Russian Federation in the field of environmental protection and provide measures for environmental education of the population.

E. V. Ershkova
Joint Directorate of the Mordovia State Nature Reserve and National Park “Smolny”
Krasnaya St. 30, Saransk, Republic of Mordovia, 430005 Russia

vargot@yandex.ru

I. G. Esina
Joint Directorate of the Mordovia State Nature Reserve and National Park “Smolny”
Krasnaya St. 30, Saransk, 430005 Russia


O. G. Grishutkin
Joint Directorate of the Mordovia State Nature Reserve and National Park “Smolny”
Krasnaya St. 30, Saransk, 430005 Russia

Papanin Institute for Biology of Inland Waters, Russian Academy of Sciences
Borok 109, Nekouz District, Yaroslavl Oblast, 152742 Russia


A. V. Chkalov
Institute of Biology and Biomedicine, Nizhny Novgorod State University of N.I. Lobachevsky
prospect Gagarina 23, Nizhny Novgorod, 603022 Russia

Agafonov, V.A. (ed.), 2018. Krasnaya kniga Voronezhskoi oblasti. Tom 1: Rasteniya. Lishayniki. Griby [Red Data Book of the Voronezh Region. Vol. 1: Plants. Lichens. Mushrooms]. MODEK, Voronezh, Russia, 472 p. (In Russian).
Akatov, V.V., 1986. Osnovnye tendentsii v zarastanii vysokogornykh ozer Severo-Zapadnogo Kavkaza [Main tends in overgrows of Alpine lakes in the North-Western Caucasus]. Botanicheskiy Zhurnal [Botanical Journal] 71 (6), 798–804. (In Russian).
Alekseev, A.E., Alekseev, E.B., Gabbasov, K.K., Gorchyakovsky, P.L., Gubanov, I.A. et al., 1988. Opredelitel’ vysshikh rastenyi Bashkirskoi ASSR [Manual of higher plants of the Bashkir ASSR]. Nauka, Moscow, USSR, 316 p. (In Russian).
Artem’eva, Е.А., Maslennikov, А.V., Коrepov, М.V. (eds.), 2015. Krasnaya kniga Ul’yanovskoi oblasti [Red Data Book of the Ulyanovsk Region]. Buki Vedi, Moscow, Russia, 550 p. (In Russian).
Baikov, K.S. (ed.), 2012. Konspekt flory Aziatskoi Rossii: sosudistye rasteniya [Synopsis of the flora of Asian Russia: Vascular plants]. Publishing house of the Siberian Branch of Russian Academy of Science, Novosibirsk, Russia, 640 p. (In Russian).
Baranova, O.G., Il’minskikh, N.G., Puzyrev, A.N., Tuganaev, V.V., 1992. Konspekt flory Udmurtii [Synopsis of flora of the Udmurtia]. Publishing house of the Udmurt University, Izhevsk, Russia, 140 p. (In Russian).
Barseghyan, A.M., 1966. K poznaniyu vodno-bolotnoi flory i rastitel’nosti gornykh raionov Armenii [To the knowledge of wetland flora and vegetation of the mountainous regions of Armenia]. Botanicheskiy Zhurnal [Botanical Journal] 51 (9), 1330–1337. (In Russian).
Bayanov, N.G., Krivdina, T.V., Loginov, V.V., 2014. Ozera yugo-zapadnoi chasti Nizhegorodskoi oblasti [Lakes in the south-west of the Nizhny Novgorod Region]. Trudy gosudarstvennogo prirodnogo zapovednika imeni P.G. Smidovicha [Proceedings of the Mordovia State Nature Reserve] 12, 241–263. (In Russian).
Bobrov, А.А., Chemeris, Е.V., 2006. Potamogeton × vepsicus (Potamogetonaceae) – noviy gibrid rdestov iz Verkhnego Povolzh’ya [Potamogeton × vepsicus (Potamogetonaceae) – a new hybrid Pondweed from the Upper Volga Region]. Botanicheskiy Zhurnal [Botanical Journal] 91 (1), 71–84. (In Russian).
Bobrov, A.A., Chemeris, E.V., 2008. Rechnye rdesty (Potamogeton, Potamogetonaceae) na severe evropeiskoi Rossii [River pondweed (Potamogeton, Potamogetonaceae) in the north of European Russia]. Lektsii i materialy dokladov Vserossiiskoi shkoly-konferentsii “Ekosistemy malykh rek: bioraznoobrazie, biologiia, okhrana” [Lectures and materials of reports of the All-Russian SchoolConference “Ecosystems of small rivers: biodiversity, biology, conservation”], Borok, 18–21 November 2008. Yaroslavl Printing House, Yaroslavl, Russia, 79–82. (In Russian).
Boedeltje, G., Jongejans, E., Spanings, T., Verberk, W.C.E.P., 2016. Effect of gut passage in fish on the germination speed of aquatic and riparian plants. Aquatic Botany 132, 12–16. https://doi.org/10.1016/j.aquabot.2016.03.004
Borisova, G., Chukina, N., Maleva, M., Majeti, P., 2014. Ceratophyllum demersum L. and Potamogeton alpinus Balb. from Iset’ River, Ural Region, Russia differ in adaptive strategies to heavy metals exposure – a comparative study. International Journal of Phytoremediation 16 (6), 621–33. https://doi.org/10.1080/15226514.2013.803022
Brux, H., Todeskino, D., Wiegleb, G., 1987. Growth and reproduction of Potamogeton alpinus balbis growing in disturbed habitats. Archiv fur hydrobiologie. Beihefte 27, 115–127.
Brux, H., Herr, W., Todeskino, D., Wiegleb, G., 1988. A study on structure and dynamics of communities
with Potamogeton alpinus Balbis in north German waters. Aquatic Botany 32, 23–44.
Chernov, V.N., Chernova, E.P., 1949. Flora ozer Karelii [Flora of lakes of Karelia]. State Publishing
House of the Karelo-Finnish SSR, Petrozavodsk, USSR, 162 p. (In Russian).
Chkalov, A.V. (ed.), 2017. Krasnaya kniga Nizhegorodskoi oblasty. Vtoroe izdanie, pererabotannoe i
dopolnennoe. Tom 2: sosudistye rasteniya, mokhoobraznye, vodorosli, lishainiki, griby [Red Data Book of the Nizhny Novgorod Region. 2nd edition, corrected and supplemented. Vol. 2: Vascular plants, Bryophytes, Algae, Lichens, Fungi]. ROST-DOAFK, Kaliningrad, Russia, 304 p. (In Russian).
Chukina, N., Borisova, G., Maleva, M., 2014. Antioxidant status of hydrophytes with different accumulative
ability illustrated by Potamogeton alpinus Balb and Batrachium trichophyllum (Chaix) Bosch. Inland Water Biology 7 (4), 401–405. https://doi.org/10.1134/S1995082914040038
Convention on Biological Diversity, 1992. United Nations, 28 p.
Drozdowski, I., Mrkvicka, A.C., Mrkvicka, G.F., 2015. Die Wasserpflanzenflora stehender Gewässer des
steirischen Salzkammergutes (Österreich) sowie Anmerkungen zum Vorkommen von Großmuscheln, Krebsen und Amphibien. Biodiversität und Naturschutz in Ostösterreich – BCBEA 1/2, 233–251 (In German).
Fedorov, A.A. (ed.), 1979. Flora Evropeiskoi chasti SSSR. Tom IV [Flora of European part of the USSR.
Vol. IV]. Nauka, Leningrad, USSR, 355 p. (In Russian).
Gafurova, M.M., 2014. Sosudistye rasteniya Chuvashskoi Respubliki. Tom III [Vascular plants of the
Chuvash Republic. Flora of the Volga Basin. Vol. III]. Cassandra, Togliatti, Russia, 333 p. (In Russian).
Gafurova, M.M. (ed.), 2020. Krasnaya kniga Chuvashskoi Respubliki. Tom 1. Chast’ 1: Redkie vidy rastenyi i gribov. Izdanie 2-e [Red Data Book of the Chuvash Republic. Volume 1. Part 1: Rare species of plants and fungi. Edition 2nd]. Buki Vedi, Moscow, Russia, 332 p. (In Russian).
Geltman, D.V. (ed.), 2024. Krasnaya kniga Rossiiskoi Federacii. Rasteniya i Griby, 2-e ofitsialmoye izdanie [Red Data Book of the Russian Fereration. Plants and Fungy. 2nd official edition]. VNII Ekologiya, Moscow, Russia, 944 p. (In Russian).
Gerdol, R., Bragazza, L., 2001. Syntaxonomy and community ecology of mires in the rhaetian Alps (Italy). Phytocoenologia 31 (2), 271–299. https://doi.org/10.1127/phyto/31/2001/271
Gubanov, I.A., Kiseleva, K.V., Novikov, V.S., Tikhomirov, V.N., 2002. Illyustrirovannyi opredelilel’ rastenyi Srednei Rossii. Tom 1: Pteridophyta, Equisetophyta, Lycopodiophyta, Gymnospermae, Angiospermae (Monocotyledones) [Illustrated manual of plants of Central Russia. Vol. 1: Pteridophyta, Equisetophyta, Lycopodiophyta, Gymnospermae, Angiospermae (Monocotyledones)]. KMK Scientific Press Ltd, Institute of Technological Research, Moscow, Russia, 526 p. (In Russian).
Kalashnikova, O.V., 2013. Novye dannye po flore pravoberezhiya Volgi v Samarskoi oblasti [New data on the flora of the right bank of the Volga in the Samara region]. Izvestiia Samarskogo nauchnogo tsentra Rossiiskoi akademii nauk [Bulletin of the Samara Scientific Center of the Russian Academy of Sciences] 15, 3 (2), 836–840. (In Russian).
Kapitonova, О.А., 2019. Gidrofil’naya flora Vyatsko-Kamskogo Predural’ya i eyo ekologicheskie i biologicheskie osobennosti [Hydrophilic flora of the Vyatka-Kama Cis-Urals and its ecological and biological features]. Doctor of Sciences in Biology thesis. Tobol’sk, Russia, 291 p. (In Russian).
Kaplan, Z., Uotila, P., 2011. Potamogeton × exilis (P. alpinus × P natans), a new hybrid pondweed from Finland. Nordic Journal of Botany 29, 477–483.
Kazakova, М.V., 2004. Flora Ryazanskoi oblasti [Flora of the Ryazan Region]. Russkoe Slovo, Ryazan’, Russia, 387 p. (In Russian).
Kaźmierczakowa, R. (ed.), 2016. Polska czerwona lista paprotników i roślin kwiatowych [Polish red list of pteridophytes and flowering plants]. Instytut Ochrony Przyrody, Polska Akademia Nauk, Kraków, Poland, 44 p. (In Polish).
Kestemont, B., 2019. The bottom-up assessment of threatened species. Nature Conservation Research 4 (3), 93–106. https://doi.org/10.24189/ncr.2019.036
Kochjarová, J., Hrivnák, R., Oťaheľová, H., 2010. Recent chorological and ecological knowledge about aquatic plants in the Orava region. Bulletin Slovenskej botanickej spoločnosti 32 (2), 37–46. (In Slovak).
Kravchenko, A.V., 2020. Sosudistye rasteniya Zapovednika Pasvik i sopredel’nykh territoryi Murmanskoi
oblasti [Vascular plants of the Pasvik strict nature reserve and adjacent parts of the Murmansk Region]. Karelian Scientific Centre RAS, Petrozavodsk, Russia, 281 p. (In Russian).
Łachacz, A., Pisarek, W., 2010. Rare species of vascular plants in the valley of the Czarna River on the
Mazurska Plain. Fragmenta Floristica et Geobotanica Polonica 17 (1), 3–8.
Le Roux, J.J., Hui, C., Castillo, M.L., Iriondo, J.M., Keet, J.-H. et al., 2019. Recent anthropogenic
plant extinctions differ in biodiversity hotspots and coldspots. Current Biology 29 (17), 2912–2918.e2.
https://doi.org/10.1016/j.cub.2019.07.063
Lisitsyna, L.I., Papchenkov, V.G., Artemenko, V.I., 2009. Flora vodoemov volzhskogo basseina [Flora of
waterbodies of the Volga bassin]. КМК, Moscow, Russia, 219 p. (In Russian).
Maevskiy, P.F., 2014. Flora srednei polosy Evropeiskoi chasti Rossii. 11-e izdanie, ispravlennoe i dopolnennoe [Flora of Middle belt of the European part of Russia. 11th edition, edited and supplemented]. КМК, Moscow, Russia, 640 p. (In Russian).
Mesters, C.M.L., 1995. Shift in macrophyte species composition as a result of eutrophication and pollution in Dutch transboundary streams over the past decades. Journal of Aquatic Ecosystem Stress and Recovery 4 (4), 295–305. https://doi.org/10.1007/BF00118010
Nazirov, A.A. (ed.), 2016. Krasnaya kniga Respubliki Tatarstan: zhyvotnye, rasteniya, griby. Tret’e izdanie [Red Data Book of the Republic of Tatarstan: Animals, Plants, Mushrooms. 3rd edition]. Ideal Press, Kazan, Russia, 760 p. (In Russian).
Nyankovskiy, M.A. (ed.), 2015. Krasnaya kniga Yaroslavskoi oblasti [Red Data Book of the Yaroslavl Region]. Academia 76, Yaroslavl, Russia, 472 p. (In Russian).
Ohwi, J., 1965. Flora of Japan. Smithsonian Institution, Washington, D.C., USA, 1067 p.
Ovesnov, S.A., Ephimik, E.G., Kos’minykh, T.V., Baranova, O.G., Kamelin, R.V. et al., 2007. Illyustrirovannyi opredelitel’ rastenyi Permskogo kraya [Illustrated manual of plants of Permsky Kray]. Knizhnyi Mir, Perm’, Russia, 747 p. (In Russian).
Papchenkov, V.G., 1993. Rdesty (Potamogeton L., Potamogetonaceae) Srednego Povolzhiya [Pondweeds (Potamogeton L., Potamogetonaceae) of the Middle Volga]. Samarskaya Luka 4, 225–238. (In Russian).
Petrova, E.A., Utemova, L.D., 2008. Dopolneniya k flore natsionalnogo parka “Chavash varmane” [Additions
to the flora of the Chavash Varmane National Park]. Nauchnye trudy natsional'nogo parka “Chavash Varmane” [Scientific Proseedings of the Chavash Varmane National Park] 2, 22–38. (In Russian).
Plaksina, T.I., 2001. Konspekt flory Volgo-Ural’skogo regiona [Synopsis of flora of Volga-Ural region].
Samara University, Samara, Russia, 388 р. (In Russian).
Preston, C.D., 1995. Pongweeds of Great Britain and Ireland. Botanical society of the British Iles,
London, UK, 352 p.
Prokin, A.A., Sazhnev, A.S., Philippov, D.A., 2019. Water beetles (Insecta: Coleoptera) of some peatlands in
the North Caucasus. Nature Conservation Research 4 (2), 57–66. https://doi.org/10.24189/ncr.2019.016
Pulido, C., Riera, J.L., Ballesteros, E., Chappuis, E., Gacia, E., 2015. Predicting aquatic macrophyte
occurrence in soft-water oligotrophic lakes (Pyrenees mountain range). Journal of Limnology 74 (1),
143–154. https://doi.org/10.4081/jlimnol.2015.965
Rakov, N.S., Saksonov, S.V., Senator, S.A., Vasyukov, V.M., 2014. Sosudistye rasteniya Ul’yanovskoi oblasti. Flora volzhskogo basseina. Tom II) [Vascular plants of the Ulyanovsk region. Flora of the Volga basin. Vol. II]. Cassandra, Togliatti, Russia, 295 p. (In Russian).
Reshetnikova, N.M., Skvortsov, A.K., Mayorov, S.R., Voronkina N.V., 2005. Sosudistye rasteniya natsional’nogo parka Ugra (Annotirovannyi spisok vidov) (Flora i fauna natsional'nykh parkov. Vypusk 6) [Vascular plants of the Ugra National Park (Annotated list of species) (Flora and fauna of National Parks. Issue 6)]. RAS Commission on Biodiversity Conservation, Institute of Ecology and Evolution Problems RAS, Moscow, Russia, 143 p. (In Russian).
Robionek, A.E., Banaś, K., Chmara, R., Szmeja, J., 2015. The avoidance strategy of environmental constraints by an aquatic plant Potamogeton alpinus in running waters. Ecology and Evolution 5 (16), 3327–3337. https://doi.org/10.1002/ece3.1598
Robionek, A.E., Banaś, K., Chmara, R. Szmeja, J., 2018. Periodic events of Potamogeton alpinus in NW Poland (Pomerania region). Oceanology and Hydrobiological Studies 50 (1), 41–49. https://doi.org/10.1515/ohs-2018-0005
Saksonov, С.V., Senator, S.А., 2012. Putevoditel’ po Samarskoi flore (1851–2011) (Flora volzhskogo basseina. Tom 1) [Guide the Samara flora (1851–2011) (Flora of the Volga Basin. Vol. 1)]. Cassandra, Togliatti, Russia, 516 p. (In Russian).
Seregin, A.P., 2012. Flora Vladimirskoi oblasti: Konspekt i atlas [Flora of Vladimir Region, Russia: Checklist and Atlas]. Grif & K, Tula, Russia, 618 p. (In Russian).
Shabnam, A., Afsharzadeh, S., Dinarvand, М., Wiegleb, G., 2017. Synopsis of Potamogetonaceae in Iran with supplements to the Flora Iranica and a new identification key. Phytotaxa 311 (1), 1–21.
https://doi.org/10.11646/phytotaxa.311.1.1
Shcherbakov, А.V., 1990. Flora vodoyomov Moskovskoi oblasti [Flora of water bodies of Moscow region]. PhD in Biology thesis. Moscow, Russia, 481 p. (In Russian).
Shcherbakov, А.V., 1999. Atlas flory vodoyemov Tul’skoi oblasti [Atlas of water bodies flora of the Tula region]. Grif & K, Moscow, Russia, 45 p. (In Russian).
Shcherbakov, А.V., 2010. Vodnaya sosudistaya flora Orlovskoi oblasti [Aquatic vascular flora of Orel region]. KMK Scientific Press Ltd, Moscow, Russia, 90 p. (In Russian).
Shcherbakov, А.V, Panasenko, N.N., Luybeznova, N.V., 2018. Spisok sosudistykh vodnykh rasteniy Bryanskoi oblasti [Checklist of vascular aquatic plants of Bryansk region]. Fitoraznoobrazie Vostochnoi Evropy [Phytodiversity of Eastern Europe] 12 (2), 124–134. (In Russian).
Shin, H., Choi, H.K., 1998. Taxonomic examination on Potamogeton alpinus Balbis (Potamogetonaceae) in Korea. Journal Plant Biology 41, 146–148. https://doi.org/10.1007/BF03030402
Silaeva, T.B. (ed.), 2003. Krasnaya kniga Respubliki Mordovia. Tom 1. Redkie vidy rastenyi, lishainikov i gribov [Red Data Book of the Republic of Mordovia. Vol. 1. Rare species of plants, lichens and fungi]. Mordovia Book Publishing House, Saransk, Russia, 288 p. (In Russian).
Silaeva, T.B. (ed.), 2017. Krasnaya kniga Respubliki Mordovia. Rasteniya i griby. Izdanie vtoroe, pererabotannoe [Red Data Book of the Mordovia Republic. Plants and Fungi. Edition 2, revised]. Mordovia Book Publishing House, Saransk, Russia, 396 p.
Silaeva, T.B., Kiryukhin, I.V., Chugunov, G.G., Levin, V.K., Mayorov, S.R. et al., 2010a. Sosudistye
rasteniya Respubliki Mordoviya (konspekt flory) [Vascular plants of the Republic of Mordovia (synopsis
of flora)]. Publishing House of the Mordovia State University, Saransk, Russia, 352 p. (In Russian).
Silaeva, T.B., Kiryukhin, I.V., Chugunov, G.G., Ageeva, A.M., Vargot, E.V. et al., 2010b. Redkie rasteniya i griby: materialy vedeniya Krasnoi knigi Respubliki Mordovia za 2010 god [Rare plants and fungi: materials for maintenance of the Red Data Book of the Republic of Mordovia for 2010]. Publishing House of the Mordovia State University, Saransk, Russia, 44 p. (In Russian).
Silaeva, T.B., Vargot, E.V., Khapugin, А.А., Ageeva, A.M., Ivoylov, А.V. et al., 2013. Redkie rasteniya i griby: materialy vedeniya Krasnoi knigi Respubliki Mordovia za 2013 god [Rare plants and fungi: materials for maintenance of the Red Data Book of the Republic of Mordovia for 2013]. Publishing House of the Mordovia State University, Saransk, Russia, 152 p. (In Russian).
Silaeva, T.B., Vargot, E.V., Khapugin, А.А., Urbanavichus, G.P., Urbanavichene, I.N. et al., 2014. Redkie rasteniya i griby: materialy vedeniya Krasnoi knigi Respubliki Mordovia za 2014 god [Rare plants and fungi: materials for maintenance of the Red Data Book of the Republic of Mordovia for 2014].
Publishing House of the Mordovia State University, Saransk, Russia, 92 p. (In Russian).
Silaeva, T.B., Khapugin, А.А., Ershkova, Е.V., Ageeva, A.M., 2019. Spisok sosydistykh rasteniy Respubliki Mordovia v predelakh basseyna reki Oki [List of vascular plants of the Republic of Mordovia within the Oka River Basin]. Trudy Mordovskogo gosudarstvennogo prirodnogo zapovednika imeni P.G. Smidovicha [Proceedings of the Mordovia State Nature Reserve] 22, 175–221. (In Russian).
Søndergaard, M., Johansson, L.S., Lauridsen, T.L., Jørgensen, T.B., Liboriussen, L., Jeppesen, E., 2010. Submerged macrophytes as indicators of the ecological quality of lakes. Freshwater Biology 55 (4), 893–908. https://doi.org/10.1111/j.1365-2427.2009.02331.x
Sukhorukov, А.P. (ed.), 2010. Opredelitel’ sosudistykh rastenyi Tambovskoi oblasty [The identification manual of vascular plants of the Tambov region]. Grif & К, Tula, Russia, 350 p. (In Russian).
Teteryuk, B.Y., 2012. Flora drevnikh ozer Evropeiskogo Severo-Vostoka Rossii [Flora of ancient lakes in the European North-East of Russia]. Izvestiia Samarskogo nauchnogo tsentra Rossiiskoi akademii nauk [Bulletin of the Samara Scientific Center of the Russian Academy of Sciences] 14 (1), 82–90. (In Russian).
Tolmachev, A.I. (ed.), 1974. Flora Severo-Vostoka Evropeiskoi chasti SSSR. Tom I [Flora of North-East of the European part of the USSR. Vol. I]. Nauka, Leningrad Department, Leningrad, USSR, 275 p. (In Russian).
Tsvelev, N.N., 2000. Opredelitel’ sosudistykh rastenyi Severo-Zapadnoi Rossii (Leningradskaya, Pskovskaya i Novgorodskaya oblasti) [Manual of the vascular plants of the North-Western Russia (Leningrad, Pskov and Novgorod regions)]. Publishing House of Saint-Peterburg State ChemicalPharmatsevtical Academy, Saint-Peterburg, Russia, 781 p. (In Russian).
Vargot, E.V., Ivashina, A.A., 2014. Nakhodki redkikh vodnykh i bolotnykh rastenii v Nizhegorodskoi oblasti [Findings of rare aquatic and bog plants in the Nizhny Novgorod region]. Collection on maintaining the Red Book of the Nizhny Novgorod region, 25–27. (In Russian).
Wani, S.A., Pandit, A.K., 2008. Ecological disturbances and floristic diversity change in Nilang, a high altitude Himalyan lake under threat. Proceeding of Taal 2007: The 12th world lake conference, 430–434.
Zamotailov, A.S. (ed.), 2012. Krasnaya kniga Respubliki Adygeiya: redkie i ugrozhaemye ob’ekty flory i fauny. Vtoroe izdanie. Chast’ 1: Vvedenie: Rasteniya i Griby [Red Data Book of the Republic of Adygea: rare and endangered objects of flora and fauna. Second edition. Part 1: Introduction: Plants and Fungi]. Kachestvo, Maykop, Russia, 340 p. (In Russian).
Zalewska-Gałosz, J., Kaplan, Z., Kwolek, D., 2018. Reinterpretation of Potamogeton × nerviger: solving a taxonomic puzzle after two centuries. Preslia 90, 135–149. https://doi.org/10.23855/preslia.2018.135
Zeko, A., Šegota, V., Vilović, T., Koletić, N., Alegro, A., 2020. Aquatic plants of Croatia: Data derived from the ZA herbarium collection. Natura Croatica 29 (2), 205–216.
Zhengyi, W., Raven, P.H. (eds.), 2012. Flora of China illustrations. Vol. 23: Acoraceae through Cyperaceae. Science Press, Beijing; Missouri Botanical Garden Press, St. Louis, 136–156.