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| Amphiprora kjellmanii var. genuina Gran in Nansen 1900 |
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| Amphiprora kjellmanii var. kryophila (Cleve) Gran 1900 |
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| Chaetoceros teres f. spinulosus Gran 1900 |
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| Chaetoceros teres f. spumosa Gran 1900 |
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| Navicula blessingii Gran 1900 |
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| Navicula derasa var. erosa (Cleve) Gran 1900 |
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| Navicula detersa (Grunow) Gran 1900 |
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| Navicula recurvata Gran 1900 |
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| Navicula superba var. subacuta Gran 1900 |
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| Navicula transfuga f. robusta Gran 1900 |
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| Pinnularia perlucens (Østrup) Grun 1900 |
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| Pinnularia quadratarea var. bicontracta (Østrup) Gran 1900 |
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| Pinnularia quadratarea var. constricta (Østrup) Gran 1900 |
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| Pinnularia quadratarea f. cuneata (Østrup) Gran 1900 |
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| Pinnularia quadratarea f. denestriata (Cleve) Gran 1900 |
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| Pinnularia quadratarea f. gibbosa (Østrup) Gran 1900 |
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| Pinnularia quadratarea f. maxima (Østrup) Gran 1900 |
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| Pinnularia quadratarea f. minima (Østrup) Gran 1900 |
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| Pinnularia quadratarea f. subcontinua (Grunow) Gran 1900 |
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| Pinnularia quadratarea f. subglabra (Østrup) Gran 1900 |
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