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| Nitzschia tryblionella var. calida (Grunow in Cleve & Grunow) Van Heurck 1885 |
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| Nitzschia vitrea var. recta (Hantzsch in Rabenhorst; Grunow in Cleve & Grunow) Van Heruck 1885 |
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| Plagiotropis elegans (W. Smith) Grunow in Van Heurck 1885 |
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| Pleurosigma acuminatum var. brebissonii (Grunow in Cleve & Grunow) Van Heurck 1885 |
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| Pleurosigma affine var. nicobarica Grunow in Van Heurck 1885 |
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| Pleurosigma angulatum var. aestuarii (Brebisson in Kutzing) Van Heurck 1885 |
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| Pleurosigma angulatum var. delicatulum (W. Smith) Van Heurck 1885 |
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| Pleurosigma angulatum var. elongatum (W. Smith) Van Heurck 1885 |
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| Pleurosigma angulatum var. quadratum (W. Smith) Van Heurck 1885 |
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| Pleurosigma angulatum var. strigosa (strigosum) (W. Smith) Van Heurck 1885 |
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| Pleurosigma balticum var. brebissonii (Grunow in Cleve & Grunow) Van Heurck 1885 |
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| Rhaphoneis (Raphoneis) belgica (Grunow in Van Heurck) Grunow in Van Heurck 1885 |
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| Rhaphoneis (Raphoneis) caduceus (caducea) (Ehrenberg; Ehrenberg) Van Heurck 1885 |
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| Stauroneis africana var. acuminata Grunow in Van Heurck 1885 |
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| Stauroneis anceps var. amphicephala (Kützing) Van Heurck 1885 |
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| Surirella ovalis var. angusta (Kützing) Van Heurck 1885 |
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| Surirella ovalis var. crumena (Brébisson ex Kützing) Van Heurck 1885 |
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| Surirella ovalis var. minuta Van Heurck 1885 |
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| Surirella ovalis var. ovata (Kützing) Van Heurck 1885 |
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| Surirella ovalis var. pinnata (W. Smith) Van Heurck 1885 |
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