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| Epithemia zebra f. amphicephala (Grunow in Van Heurck) Cleve-Euler 1952 |
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| Epithemia zebra f. bidens (A. Cleve) Cleve-Euler 1952 |
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| Epithemia zebra var. curvirostris Cleve-Euler 1952 |
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| Epithemia zebra var. frickei Cleve-Euler 1952 |
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| Epithemia zebra var. longirostris Cleve-Euler 1952 |
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| Epithemia zebra f. longissima (M. Peragallo & Heribaud in Heribaud) Cleve-Euler 1952 |
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| Epithemia zebra f. medioconstricta (Cleve-Euler) Cleve-Euler 1952 |
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| Epithemia zebra f. typica Cleve-Euler 1952 |
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| Frustulia amphipleuroides var. typica Cleve-Euler 1952 |
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| Frustulia rhomboides var. genuina Cleve-Euler 1952 |
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| Frustulia rhomboides var. tenuirostris Cleve-Euler 1952 |
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| Frustulia saxonica var. compacta (Cleve-Euler) Cleve-Euler 1952 |
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| Frustulia saxonica var. laticeps Cleve-Euler 1952 |
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| Frustulia saxonica var. leptocephala (Østrup) Cleve-Euler 1952 |
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| Frustulia saxonica var. linearis Cleve-Euler 1952 |
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| Frustulia saxonica f. minor Cleve-Euler 1952 |
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| Frustulia saxonica var. typica Cleve-Euler 1952 |
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| Frustulia saxonica var. undulata (Hustedt; Hustedt in Schmidt et al.) Cleve-Euler 1952 |
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| Frustulia vulgaris var. oblonga Cleve-Euler 1952 |
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| Frustulia vulgaris f. parva Cleve-Euler 1952 |
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