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| Gomphonema gracile var. auritum (A. Brun) Van Heurck 1885 |
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| Diatoma elongatum var. tenuis (tenue) (Agardh) Van Heurck 1885 |
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| Synedra ulna var. vitrea (Bory ex Lenormand Herb., Kutzing) Van Heurck 1885 |
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| Tetracyclus rupestris (Braun ex Rabenhorst) Grunow in Van Heurck 1885 |
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| Epithemia musculus var. constricta (Brebisson cum specim.) Van Heurck 1885 |
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| Amphora ostrearia var. quadrata (Brébisson ex Kützing) Van Heurck 1885 |
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| Navicula radiosa var. tenella (Brébisson ex Kützing) Van Heurck 1885 |
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| Surirella ovalis var. crumena (Brébisson ex Kützing) Van Heurck 1885 |
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| Pleurosigma angulatum var. aestuarii (Brebisson in Kutzing) Van Heurck 1885 |
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| Navicula viridula var. avenacea (Brébisson) Van Heurck 1885 |
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| Bellerochea malleus (Brightwell) Van Heurck 1885 |
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| Amphiprora paludosa var. duplex (Donkin) Van Heurck 1885 |
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| Donkinia recta (Donkin) Grunow in Van Heurck 1885 |
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| Navicula lanceolata var. arenaria (Donkin) Van Heurck 1885 |
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| Amphora ovalis var. gracilis (Ehrenberg) Van Heurck 1885 |
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| Biddulphia antediluviana (Ehrenberg) Van Heurck 1885 |
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| Biddulphia favus (Ehrenberg) Van Heurck 1885 |
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| Cocconeis placentula var. lineata (Ehrenberg) Van Heurck 1885 |
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| Coscinodiscus subtilis var. rothii (Ehrenberg) Van Heurck 1885 |
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| Navicula digitoradiata var. cyprinus (Ehrenberg) Van Heurck 1885 |
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