Diatoms of North AmericaDiatoms of North America
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Compare Eucocconeis americana

Enache and Potapova 2012

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Eucocconeis laevis also has arched valves with rounded apices, but valves are smaller. The central area on the raphe valve is usually asymmetric in E. laevis.

LM scalebar = 10 µm
Eucocconeis americana LM1 Eucocconeis americana LM5 Eucocconeis americana LM3 Eucocconeis americana LM4 Eucocconeis americana LM1 Eucocconeis americana LM2 Eucocconeis americana LM2
Length Range
14.8–39.7 µm
Width Range
7.8–13.4 µm
Striae in 10 µm
22–32

Eucocconeis laevis

(Østrup) Lange-Bert. apud Lange-Bert. and Genkal in Lange-Bert. 1999

Mo000019 Eulaev 1B Ed Gsn20110 Eulaevis 1A Ed Gsn23387 Eulaevis 1B Ed Gsn23387 Eulaevis 1A Ed Gsn20110 Eulaevis 3B Ed Gsn20110 Eulaevis 2A Ed Mo000019 Eulaev 1A Ed
Length Range
10-18 µm
Width Range
5.4-7.1 µm
Striae in 10 µm
25-35