Additions to the vascular flora of the Tyumen region, Western Siberia Author Kapitonova, Olga A. https://orcid.org/0000-0002-6618-7029 Tobolsk complex scientific station of the Ural branch of the Russian Academy of Sciences, 626152, Russia, Tyumen Region, Tobolsk, 15 Academic Yu. Osipov St kapoa.tkns@gmail.com text Acta Biologica Sibirica 2020 2020-10-05 6 339 355 http://dx.doi.org/10.3897/abs.6.e52696 journal article http://dx.doi.org/10.3897/abs.6.e52696 2412-1908-6-339 9FF763A6E92E47F5A081FB6648E1AE7A BF0606D3FEDD5165BD1AD6C2DD4921AE Potamogeton friesii Rupr. Material examined. RUSSIA , Tyumen Reg. - Yarkovo distr. • Lake Petigul' ; 57.3903°N , 67.4678°E ; shallow coastal water; 19 Jun. 2019 ; V.I. Kapitonov leg. - Tobolsk distr. • 450 m S of Bajgara ; 58.0236°N , 68.8440°E ; lake in the floodplain of the right coast of Irtysh River , shallow coastal water; 3 Jul. 2019 . • 9.5 km E of Tobolsk ; E of the "Tobolsk-Polymer" site; 58.2200°N , 68.4718°E ; channel along the railway, in front of the dam, shallow water; 19 Jul. 2019 .