Diatoms of North AmericaDiatoms of North America
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Compare Cymbella perfossilis

Krammer 2002

Compare

Cymbella amplificata has straight a proximal raphe that terminates in bulbous ends. Cymbella neocistula has narrower valves, a smaller central area, and typically fewer (2-5) stigmata.

LM scalebar = 10 µm
Cymbella perfossilis LM1 Cymbella perfossilis LM2 Cymbella perfossilis LM3 Cymbella perfossilis LM4 Cymbella perfossilis LM6 Cymbella perfossilis LM5 Cymbella perfossilis LM7
Length Range
70-138 µm
Width Range
17.4-26.3 µm
Striae in 10 µm
8-11 at the valve center, up to 12 near the apices

Cymbella amplificata

Krammer 2002

Cymbeamplificata1 Cymbeamplificata2 Cymbeamplificata3 Cymbeamplificata4 Cymbeamplificata5 Cymbeamplificata6 Cymbeamplificata7
Length Range
84-121 µm
Width Range
20-26 µm
Striae in 10 µm
7-11

Cymbella neocistula

Krammer 2002

Cymbella Neocistula L 4 33 2 Cymbella Neocistula L 4 33 1 Cymbella Neocistula L 4 33 3 Cymbella Neocistula L 4 33 4 Cymbella Neocistula L 4 33 6 Cymbella Neocistula L 4 33 5
Length Range
32-85 µm
Width Range
11-22 µm
Striae in 10 µm
7-10 at valve center, 10-13 near ends