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| Biddulphia sculpta (Shadbolt) Van Heurck 1885 |
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| Biddulphia smithii (Ralfs in Pritchard) Van Heurck 1885 |
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| Chaetoceros varians Van Heurck 1885 |
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| Cocconeis placentula var. lineata (Ehrenberg) Van Heurck 1885 |
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| Coscinodiscus rothii var. normani (normanii) (Gregory) Van Heurck 1885 |
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| Coscinodiscus subtilis var. normannii (-manii, -manni) (Gregory) Van Heurck 1885 |
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| Coscinodiscus subtilis var. rothii (Ehrenberg) Van Heurck 1885 |
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| Cyclotella meneghiniana f. minor Van Heurck 1885 |
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| Cyclotella operculata var. radiosa Grunow in Van Heurck 1885 |
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| Cymbella cistula var. maculata (Kützing) Van Heurck 1885 |
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| Cymbella cymbiformis var. parva (W. Smith) Van Heurck 1885 |
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| Cymbella leptoceros (leptoceras) var. elongata Van Heurck 1885 |
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| Cymbella microcephala Grunow in Van Heurck 1885 |
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| Diatoma elongatum var. ehrenbergii (Kützing) Van Heurck 1885 |
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| Diatoma elongatum var. hybrida (Grunow) Van Heurck 1885 |
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| Diatoma elongatum var. tenuis (tenue) (Agardh) Van Heurck 1885 |
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| Dimeregramma (Dimerogramma) minor (minus) var. nana (Gregory) Van Heurck 1885 |
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| Donkinia recta (Donkin) Grunow in Van Heurck 1885 |
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| Epithemia musculus var. constricta (Brebisson cum specim.) Van Heurck 1885 |
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| Eunotia flexuosa var. bicapitata (Grunow in Van Heurck) Van Heurck 1885 |
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