Rumex stenophyllus Ledeb.

Material examined.

RUSSIA,, Tyumen Reg. - Armizonsky distr. • 6.4 km W-NW of Yuzhno-Dubrovnoe; 55.7891°N, 67.5832°E; Lake Chernoe, in water off the shore; salinity of the water is 2.5 g /l; 31 Jul. 2019 .