| WebNameShort | |
| Navicula mutica f. minima (Petersen) Petersen 1928 |
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| Navicula mutica f. peguana (Grunow in Cleve & Möller) Petersen 1928 |
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| Navicula mutica f. quinquenodis (Grunow) Petersen 1928 |
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| Navicula mutica f. rhombica (Zimmermann) Petersen 1928 |
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| Navicula mutica f. rhomboidea (Playfair) Petersen 1928 |
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| Navicula mutica f. wulffii (Petersen) Petersen 1928 |
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| Navicula nitrophila Boye Petersen 1928 |
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| Navicula perpusilla var. flotowii (Grunow in Van Heurck) Boye Petersen 1928 |
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| Navicula thermicola Petersen 1928 |
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| Nitzschia vermicularis var. terrestris Petersen 1928 |
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| Pinnularia appendiculata var. irrorata Boye-Petersen 1928 |
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| Pinnularia borealis f. lanceolata Boye Petersen 1928 |
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| Pinnularia borealis f. ovalis Boye Petersen 1928 |
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| Pinnularia borealis f. schmidtii Boye Petersen 1928 |
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| Pinnularia borealis f. subcapitata Boye Petersen 1928 |
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| Pinnularia borealis f. typica Petersen 1928 |
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| Pinnularia interrupta f. minor Petersen 1928 |
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| Pinnularia muscicola Petersen 1928 |
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| Pinnularia parva (parvula) f. interrupta Petersen 1928 |
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| Pinnularia subcapitata var. sublanceolata Petersen 1928 |
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