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Nitzschia brevissima is comparatively wider than the similar species, N. clausii.

LM scalebar = 10 µm
Brevissima Gc109965H006 Brevissima Gc109965H005 Brevissima Gc109965H002 Brevissima Gc109965H004 Brevissima Gc109965H003 Brevissima Gc109965H001
Length Range
20-55 µm
Width Range
3.5-5.5, as measured in the middle of the valve µm
Striae in 10 µm
37-39

Nitzschia clausii

Hantzsch 1860

Clausii 009 Clausii 004 Clausii 014 Clausii 011 Clausii 010 Clausii 007 Clausii 013
Length Range
20.0-68.0 µm
Width Range
3.0-5.0 µm