| WebNameShort | |
| Actinoptychus undulatus f. sexappendiculata (Grunow in Van Heurck) Cleve-Euler 1951 |
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| Chaetoceros hispidus var. monicae (Grunow in Van Heurck) Cleve-Euler 1951 |
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| Cyclotella bodanica var. affinis (Grunow in Van Heurck) Cleve-Euler 1951 |
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| Cyclotella kuetzingiana f. major (Grunow in Van Heurck) Cleve-Euler 1951 |
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| Cyclotella meneghiniana f. binotata (Grunow in Van Heurck) Cleve-Euler 1951 |
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| Melosira granulata f. curvata (Grunow in Van Heurck) Cleve-Euler 1951 |
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| Melosira hormoides var. minima (Grunow in Van Heurck) Cleve-Euler 1951 |
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| Melosira montagnei var. minor (Grunow in Van Heurck) Cleve-Euler 1951 |
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| Triceratium reticulum f. tetragona (Grunow in Van Heurck) Cleve-Euler 1951 |
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| Triceratium reticulum f. trigona-minuta (Grunow in Van Heurck) Cleve-Euler 1951 |
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| Coscinodiscus concinnus var. nobilis (Grunow) Cleve-Euler 1951 |
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| Coscinodiscus subtilis var. glacialis (Grunow) Cleve-Euler 1951 |
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| Coscinodiscus subtilis f. siberica (Grunow) Cleve-Euler 1951 |
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| Hemiaulus hostilis var. major (Grunow) Cleve-Euler 1951 |
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| Hemiaulus hostilis var. minuta (Grunow) Cleve-Euler 1951 |
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| Hemiaulus hyperboreus var. polaris (Grunow) Cleve-Euler 1951 |
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| Hemiaulus pileolus var. juetlandicus (Grunow) Cleve-Euler 1951 |
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| Melosira glacialis (Grunow) Cleve-Euler 1951 |
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| Melosira italica var. ambigua (Grunow) Cleve-Euler 1951 |
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| Melosira lineata var. octogona (Grunow) Cleve-Euler 1951 |
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