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Cymbella hantzschiana has smaller valves (mostly 25-50 ┬Ám 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
Cymbella alpestris LM1 Cymbella alpestris LM2 Cymbella alpestris LM3 Cymbella alpestris LM4 Cymbella alpestris LM5 Cymbella alpestris LM6 Cymbella alpestris LM7
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 hantzschiana

Krammer 2002

Cymbella hantzschiana LM2 Cymbella hantzschiana LM3 Cymbella hantzschiana LM1 Cymbella hantzschiana LM4 Cymbella hantzschiana LM5 Cymbella hantzschiana LM6 Cymbella hantzschiana 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 cymbiformis

Agardh 1830

Cymbella Cymbiformis 439301 1 Cymbella Cymbiformis 439301 2 Cymbella Cymbiformis 439301 3 Cymbella Cymbiformis 439301 4 Cymbella Cymbiformis 439301 5
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