Diatoms of North AmericaDiatoms of North America
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Compare Eucocconeis flexella

(Kütz.) F.Meister 1912

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Eucocconeis flexella is easily distinguished from other species of Eucocconeis by its large and strongly bent frustules. Eucocconeis alpestris is smaller and has parallelogram-shaped, often twisted, frustules.

LM scalebar = 10 µm
Eucocconeis flexella LM1 Eucocconeis flexella LM4 Eucocconeis flexella LM5 Eucocconeis flexella LM7 Eucocconeis flexella LM3 Eucocconeis flexella LM6 Eucocconeis flexella LM2
Length Range
18-40 µm
Width Range
9-20 µm
Striae in 10 µm
22-24 in center valve

Eucocconeis alpestris

(Brun) Lange-Bert. in Lange-Bert. and Genkal 1999

Eucocconeis alpestris LM5 Eucocconeis alpestris LM3 Eucocconeis alpestris LM6 Eucocconeis alpestris LM7 Eucocconeis alpestris LM4 Eucocconeis alpestris LM2 Eucocconeis alpestris LM1
Length Range
11.5-22 µm
Width Range
5.9-7.6 µm
Striae in 10 µm
25-30