Potamogeton x pseudolacunatus Papch.

Material examined.

RUSSIA, Tyumen Reg . - Tyumen. • next to the intersection of street of "50 years of the VLKSM" and passage “Geologorazvedchikov”; 57.1305°N, 65.5715°E; Pond ‘Utinyi’ (the pond between school No 6 and railway); 12 Jul. 1994; I.V. Kuzmin leg. (Fig. 1) .

Note.

This is an hybrid between Potamogeton lacunatus Hagstr. and P. pusillus L. (Papchenkov 2001, 2007).