Diatoms of North AmericaDiatoms of North America
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Compare Stauroneis smithii

Grunow 1860

Stauroneis separanda has smaller valves with more prominent apices. Valves at the lower end of the size range have triundulate margins.
Stauroneis smithii var. incisa valves are larger, less undulate, and have a higher stria density.

LM scalebar = 10 µm
Stauroneis smithii LM6 Stauroneis smithii LM5 Stauroneis smithii LM4 Stauroneis smithii LM3 Stauroneis smithii LM2 Stauroneis smithii LM1
Length Range
18-28 µm
Width Range
5.8-7.7 µm
Striae in 10 µm
25-30

Stauroneis separanda

Lange-Bert. and Werum in Werum and Lange-Bert. 2004

Stauroneis separanda LM5 Stauroneis separanda LM4 Stauroneis separanda LM3 Stauroneis separanda LM2 Stauroneis separanda LM1
Length Range
13.9-15.3 µm
Width Range
3.8-4.8 µm
Striae in 10 µm
30
Stauroneis smithii var incisa LM2 Stauroneis smithii var incisa LM3 Stauroneis smithii var incisa LM4 Stauroneis smithii var incisa LM5 Stauroneis smithii var incisa LM6 Stauroneis smithii var incisa LM1 Stauroneis smithii var incisa LM7
Length Range
19-36.8 µm
Width Range
4.4-5.8 µm
Striae in 10 µm
32-36