Diatoms of North AmericaDiatoms of North America
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Compare Synedra famelica

Kütz. 1844

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Fragilaria vaucheriae has wider valves and a unilaterally expanded central area. The central area of Synedra rumpens is a transverse fascia that spans the entire width of the valve. Areolae of F. vaucheriae and S. rumpens are much finer and more difficult to resolve than those of S. famelica.

LM scalebar = 10 µm
Synedra famelica LM7 Synedra famelica LM6 Synedra famelica LM5 Synedra famelica LM4 Synedra famelica LM3 Synedra famelica LM2 Synedra famelica LM1
Length Range
18-65 µm
Width Range
2.4-3.1 µm
Striae in 10 µm
18-20

Fragilaria vaucheriae

(Kütz.) Petersen 1938

Fragilaria vaucheriae LM2 Fragilaria vaucheriae LM4 Fragilaria vaucheriae LM5 Fragilaria vaucheriae LM3 Fragilaria vaucheriae LM1
Length Range
6–30 µm
Width Range
4-5 µm
Striae in 10 µm
14-16

Also compare to

Synedra rumpens

Kütz. 1844