Length: 97

Width: 28

Keel punctae: 6

Striae: 7

Collection 1552

W. Smith, Type material, near Lewes, England, Coll. Van Heurck VI-47-C8 (Krammer and Lange-Bertalot 1988)

This taxon is usually found among the periphyton (Lowe 1974).

Synonyms (Stoermer and Yang 1969)

Nitzschia tryblionella Hantzsch ex Rabenhorst, Alg. Sachsens resp. Mitleleuropas Exsicc., No. 984. 1860.

Ecology

Taxa from the genus Tryblionella are tolerant of slightly brackish waters (Lowe 1974).

Length is 60 to 150 micrometers (Hustedt 1930).

Width is 16 to 35 micrometers (Hustedt 1930).

Keelpunctae are 7 to 9 in 10 micrometers (Hustedt 1930).

Transapical ribs are 5 to 8 in 10 micrometers interspersed with fine transapical punctated striae (Hustedt 1930).