Compare

Stauroneis borrichii has capitate apices, higher stria density (20-22 in 10µm), and lacks areolae on the margin of the stauros. Stauroneis thermicola has wider valves, higher stria density (22-30 in 10µm), and lacks areolae in the margin of the stauros. Stauroneis agrestis, S. kriegeri, and S. pseudoschimanskii all have a higher stria density (40, 26-30, and 22-28 in 10µm respectively).

LM scalebar = 10 µm
Stauroneis bovbjergii LM1 Stauroneis bovbjergii LM3 Stauroneis bovbjergii LM2 Stauroneis bovbjergii LM4 Stauroneis bovbjergii LM5 Stauroneis bovbjergii LM6
Length Range
13.5-26.3 µm
Width Range
3.7-4.6 µm
Striae in 10 µm
18-20 at the valve center, 20-22 at the ends

Stauroneis agrestis

J.B.Petersen 1915

Stauroneis agrestis LM7 Stauroneis agrestis LM6 Stauroneis agrestis LM5 Stauroneis agrestis LM4 Stauroneis agrestis LM3 Stauroneis agrestis LM2 Stauroneis agrestis LM1
Length Range
23-27 µm
Width Range
4.5-5.5 µm
Striae in 10 µm
about 40

Stauroneis kriegeri

R.M.Patrick 1945

Stauroneis kriegeri LM6 Stauroneis kriegeri LM5 Stauroneis kriegeri LM4 Stauroneis kriegeri LM3 Stauroneis kriegeri LM2 Stauroneis kriegeri LM1
Length Range
19-25 µm
Width Range
4.1-5.5 µm
Striae in 10 µm
26-30

Also compare to

Stauroneis thermicola

(J.B.Petersen) J.W.G.Lund

BioData Reference
Krammer and Lange-Bertalot 2/1 Pl 90 Fig 31-34

Stauroneis borrichii

(J.B.Petersen) J.W.G.Lund

Stauroneis thermicola

(J.B.Petersen) J.W.G.Lund

Stauroneis pseudoschimanskii

Van de Vijver and Lange-Bert.