| WebNameShort | |
| Epithemia zebra f. bidens (A. Cleve) Cleve-Euler 1952 |
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| Amphipleura rutilans var. dillwynii (Agardh) Cleve-Euler 1952 |
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| Surirella biseriata var. saxonica (Auerswald ex Rabenhorst; Rabenhorst) Cleve-Euler 1952 |
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| Nitzschia palea f. minuta (Bleisch in Rabenhorst; Bleisch in Grunow) Cleve-Euler 1952 |
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| Surirella ovata var. minuta (Brébisson) Cleve-Euler 1952 |
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| Pleurosigma strigosum var. latum (Cleve) Cleve-Euler 1952 |
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| Epithemia sorex var. perundulata (Cleve-Euler in Backman & Cleve-Euler) Cleve-Euler 1952 |
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| Amphiprora ornata var. rectangulata (Cleve-Euler) Cleve-Euler 1952 |
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| Epithemia proboscidea var. acuta (Cleve-Euler) Cleve-Euler 1952 |
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| Epithemia sorex f. undulata (Cleve-Euler) Cleve-Euler 1952 |
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| Epithemia zebra f. medioconstricta (Cleve-Euler) Cleve-Euler 1952 |
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| Frustulia saxonica var. compacta (Cleve-Euler) Cleve-Euler 1952 |
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| Nitzschia hantzschiana var. tenuior (Cleve-Euler) Cleve-Euler 1952 |
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| Surirella fastuosa var. lindbergii (Cleve-Euler) Cleve-Euler 1952 |
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| Surirella lapponica var. kemensis (Cleve-Euler) Cleve-Euler 1952 |
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| Surirella variabilis var. constricta (Cleve-Euler) Cleve-Euler 1952 |
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| Surirella variabilis var. cuneata (Cleve-Euler) Cleve-Euler 1952 |
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| Navicula cuspidata f. angusta (Dippel) Cleve-Euler 1952 |
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| Navicula cuspidata f. primigena (Dippel) Cleve-Euler 1952 |
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| Navicula cuspidata f. subrostrata (Dippel) Cleve-Euler 1952 |
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