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| Achnanthes lanceolata var. oestrupii Cleve-Euler 1922 |
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| Amphora coffeaeformis var. dusenii (Brun) Cleve-Euler 1922 |
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| Amphora crucifera Cleve-Euler 1922 |
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| Anomoeoneis sculpta var. acuta Cleve-Euler 1922 |
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| Gyrosigma spenceri (spencerii) var. crassum Cleve-Euler 1922 |
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| Navicula strösei (Østrup) Cleve-Euler 1922 |
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| Pinnularia biclavata Cleve-Euler 1922 |
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| Pinnularia mesolepta f. interrupta Cleve-Euler 1922 |
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| Surirella ovalis var. peisonis Cleve-Euler 1922 |
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| Surirella ovalis f. pyriformis (Pantocsek) Cleve-Euler 1922 |
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| Surirella robusta var. ovata Cleve-Euler 1922 |
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| Surirella smithii var. constricta (W. Smith) Cleve-Euler 1922 |
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| Surirella (Suriraya) biseriata f. regularis Cleve-Euler 1922 |
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| Synedra ulna f. balatonis (Pantocsek) Cleve-Euler in Backman & Cleve-Euler 1922 |
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