Zannichellia repens Boenn.

Material examined.

RUSSIA, Tyumen Reg. - Armizonsky distr. • 1.4 km E of Poloe; 55.7436°N, 67.7998°E; Lake Suponnoe, shallow water off the SE shore; salinity of the water is 0.3 g /l; 30 Jul. 2019 (Fig. 1) .

The species is protected in the Tyumen Region (Yakushev VV 2017). In recent years, Z. repens is apparently expanding its area to the north and was recently found in the territory of Tobolsk (Kapitonova 2018).