Diatoms of North AmericaDiatoms of North America
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Compare Cocconeis klamathensis

Sovereign 1958

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Cocconeis pediculus lacks curved, longitudinal hyaline lines on the raphe valve. Cocconeis rugosa has hyaline lines that are interrupted and less defined.

LM scalebar = 10 µm
Cocconeis klamathensis LM3 Cocconeis klamathensis LM4 Cocconeis klamathensis LM5 Cocconeis klamathensis LM2 Cocconeis klamathensis LM6 Cocconeis klamathensis LM7 Cocconeis klamathensis LM1
Length Range
15-44 µm
Width Range
12-28 µm
Striae in 10 µm
26-30

Cocconeis pediculus

Ehrenb. 1838

Cocconeis pediculus LM6 Cocconeis pediculus LM3 Cocconeis pediculus LM4 Cocconeis pediculus LM7 Cocconeis pediculus LM2 Cocconeis pediculus LM5 Cocconeis pediculus LM1
Length Range
17.0-41.5 µm
Width Range
14-23 µm
Striae in 10 µm
16-22 in the raphe valve center, 16-21 in the rapheless valve center

Cocconeis rugosa

Sovereign 1958

Cocconeis rugosa LM4 Cocconeis rugosa LM1 Cocconeis rugosa LM3
Length Range
19-65 µm
Width Range
12-55 µm
Striae in 10 µm
19-23