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Compare Eunotia faba

Ehrenb. 1837

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Eunotia canicula and E. incisa have acutely rounded apices and narrower valves (less than 5 µm wide). Eunotia papilioforma and E. rhomboidea are also heteropolar, or asymmetric to the transverse axis, but E. faba has distinctly wider valves.

LM scalebar = 10 µm
Eunotia Faba 1 Eunotia Faba 2 Eunotia Faba 3 Eunotia Faba 4 Eunotia Faba 5 Eunotia Faba 6 Eunotia Faba 7
Length Range
36.2-54.3 µm
Width Range
8.1-11.1 µm
Striae in 10 µm
12-15 at valve center, 16-19 near the apices

Eunotia canicula

Furey, Lowe and Johansen 2011

Eunotia canicula LM5 Eunotia canicula LM3 Eunotia canicula LM Eunotia canicula LM2 Eunotia canicula LM1 Eunotia canicula LM5 Eunotia canicula LM4
Length Range
20-35 µm
Width Range
3.5-4.0 µm
Striae in 10 µm
14-15, areolae >35

Eunotia incisa

W.Sm. ex W.Greg. 1854

Eunotia incisa LM6 Eunotia incisa LM5 Eunotia incisa LM4 Eunotia incisa LM3 Eunotia incisa LM2 Eunotia incisa LM1 Eunotia incisa LM7
Length Range
12-50 µm
Width Range
2.8-5.0 µm
Striae in 10 µm
16-21 in the center valve

Eunotia papilioforma

Furey, Johansen and Lowe 2011

Eunotia apilioforma LM5 Eunotia apilioforma LM3 Eunotia apilioforma LM2 Eunotia apilioforma LM1 Eunotia apilioforma LM6 Eunotia apilioforma LM4
Length Range
13-35 µm
Width Range
3.3-4.8 µm
Striae in 10 µm
13-16

Eunotia rhomboidea

Hust. 1950

Eunotia rhomboidea LM6 Eunotia rhomboideaLM3 Eunotia rhomboideaLM2 Eunotia rhomboideaLM4 Eunotia rhomboidea LM7 Eunotia rhomboideaLM5 Eunotia rhomboideaLM1
Length Range
18.0-25.6 µm
Width Range
2.7-3.8 µm
Striae in 10 µm
15-17 in the center valve