Potamogeton alpinus Balb.

Material examined.

RUSSIA, Tyumen Reg. - Sladkovsky distr. • Pobeda; 55.6870°N, 70.2949°E; Lake “Mogil'noe”, shallow coastal water; 11 Aug. 2016 . - Vagai distr. • 2.8 km N-NE of Kobyakskaya; 58.0656°N, 68.9463°E; upper of the Kobyak River, in the watercourse; 25 Jun. 2019 .