- Bacillariophyta
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- Bacillariophyceae
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- Eunotiales
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- Eunotiaceae
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- Eunotia
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- Eunotia ursulae
Eunotia ursulae
L.F.Costa, C.E.Wetzel & Lange-Bertalot in Costa et al.
- Omnidia : EURL
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