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The valves of Cymbella affinis and C. subturgidula are smaller, and have protracted apices and 1-2 stigmata.

LM scalebar = 10 µm
Cymbella maggiana LM1 Cymbella maggiana LM2 Cymbella maggiana LM3 Cymbella maggiana LM4 Cymbella maggiana LM5 Cymbella maggiana LM6 Cymbella maggiana LM7
Length Range
29.4-78.2 µm
Width Range
10.5-14.3 µm
Striae in 10 µm
8-12 at the valve center, up to 14 near the apices

Cymbella affinis

Kütz. 1844

Gs009123  Gc100325 9 Gs009123  Gc100325 7 Gs009123  Gc100325 6 Gs009123  Gc100325 10 Gs009123  Gc100325 5 Gs009123  Gc100325 3 Gs009123  Gc100325 8
Length Range
19-36 µm
Width Range
6.9-9.0 µm
Striae in 10 µm
9-12 in the center valve, 13-14 at the ends

Cymbella subturgidula

Krammer 2002

Cymbella subturgidula LM7 Cymbella subturgidula LM4 Cymbella subturgidula LM3 Cymbella subturgidula LM6 Cymbella subturgidula LM2 Cymbella subturgidula LM5 Cymbella subturgidula LM1
Length Range
23-57 (inital cells up to 60) µm
Width Range
8-13 µm
Striae in 10 µm
8-11 in the valve center