This taxon has a liner-elliptic valve. There is a linear raphe. The longitudinal canals are very small. Between the striae there are coarse ribs and the striae are slightly curved and more radial toward the ends (Krammer and Lange-Bertalot 1986).
Navicula explets vardomblittensis Grunow in : Mojsisovics and Neumayer, Beitr. Plalontol. Osterreich-Ungarns, Bd. 2, Heft 4, p. 156, pl. 30, fig. 60. 1882 (Stoermer and Yang 1969).
This taxon prefers the pH to be from 6.6 to 8.9 and it occurs in lakes and ponds (Lowe 1974;Beaver 1981).