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| Gomphonema acuminatum var. trigonocephala (Ehrenberg) Grunow in Van Heurck 1880 |
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| Gomphonema constrictum f. capitata (capatatum) (Ehrenberg) Grunow in Van Heurck 1880 |
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| Gomphonema constrictum var. turgidum (Ehrenberg) Grunow in Van Heurck 1880 |
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| Navicula iridis var. amphigomphus (Ehrenberg) Van Heurck 1880 |
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| Navicula limosa var. ventricosa (Ehrenberg) Grunow in Van Heurck 1880 |
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| Gomphonema angustatum var. sarcophagus (Gregory) Grunow in Van Heurck 1880 |
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| Navicula exigua (Gregory) Grunow in Van Heurck 1880 |
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| Navicula gastrum var. exigua (Gregory) Grunow in Van Heurck 1880 |
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| Berkeleya obtusa (Greville) Grunow in Van Heurck 1880 |
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| Berkeleya parasitica (Griffith in W.H. Harvey) Grunow in Van Heurck 1880 |
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| Pleurosigma spenceri (spencerii) var. nodifera (noduliferum) (Grunow in Cleve & Grunow) Van Heurck 1880 |
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| Cocconeis californica (Grunow in Cleve & Möller) Grunow in Van Heurck 1880 |
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| Mastogloia lacustris (Grunow) Van Heurck 1880 |
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| Navicula amphisbaena var. fenzlii (Grunow) Van Heurck 1880 |
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| Navicula appendiculata var. navaena (Grunow) Grunow in Van Heurck 1880 |
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| Navicula cincta var. heufleri (Grunow) Grunow in Van Heurck 1880 |
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| Navicula liber var. linearis (Grunow) Van Heurck 1880 |
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| Navicula mutica var. quinquenodis (Grunow) Grunow in Van Heurck 1880 |
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| Navicula schumanniana var. biconstricta (Grunow) Grunow in Van Heurck 1880 |
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| Encyonema ventricosum f. minuta (Hilse in Rabenhorst) Grunow in Van Heurck 1880 |
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