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| Kingdom Chromista |
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Navicula amphibola var. amphibola Cleve -- not accepted |
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Navicula semen Ehrenberg -- accepted |
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Placoneis Mersechkowsky -- accepted |
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Placoneis amphibola (Cleve) E.J. Cox -- accepted |
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Placoneis anglica (Ralfs in Pritchard) E.J. Cox -- accepted |
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Placoneis constans (Hustedt) E.J. Cox -- accepted |
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Placoneis insignita (Hustedt) E.J. Cox -- accepted |
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Placoneis interglacialis (Hustedt) E.J. Cox -- accepted |
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Placoneis porifera (Hustedt) E.J. Cox -- not accepted |
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Placoneis rostrata (A. Mayer) E.J. Cox -- accepted |
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Placoneis subgastriformis (Hustedt) E.J. Cox -- accepted |
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Placoneis subplacentula (Hustedt) E.J. Cox -- accepted |
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