Cymbella hantzschiana has smaller valves (mostly 25-50 µm long) and a somewhat higher density of striae and areolae. Cymbella cymbiformis has 1-2 stigmata and a lower stria density.

LM scalebar = 10 µm
Length Range
40.1-65.1 µm
Width Range
9.0-11.7 µm
Striae in 10 µm
8-10 at the valve center, up to 12 at the apices
Cymbella alpestris LM1
Cymbella alpestris LM2
Cymbella alpestris LM3
Cymbella alpestris LM4
Cymbella alpestris LM5
Cymbella alpestris LM6
Cymbella alpestris LM7
Cymbella alpestris LM1 Cymbella alpestris LM2 Cymbella alpestris LM3 Cymbella alpestris LM4 Cymbella alpestris LM5 Cymbella alpestris LM6 Cymbella alpestris LM7
Length Range
25.8-46.6 µm
Width Range
7.6-11.2 µm
Striae in 10 µm
9-12 in the valve center, up to 14 at the apices
Cymbella hantzschiana LM2 Cymbella hantzschiana LM3 Cymbella hantzschiana LM1 Cymbella hantzschiana LM4 Cymbella hantzschiana LM5 Cymbella hantzschiana LM6 Cymbella hantzschiana LM7
Length Range
75.9-120.9 µm
Width Range
17.0-20.1 µm
Striae in 10 µm
6-9 at the valve center, up to 15 near the apices
Cymbella Cymbiformis 439301 1 Cymbella Cymbiformis 439301 2 Cymbella Cymbiformis 439301 3 Cymbella Cymbiformis 439301 4 Cymbella Cymbiformis 439301 5