| WebNameShort | |
| Anomoeoneis exilis var. azorica Manguin 1942 |
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| Anomoeoneis spectabilis Manguin 1942 |
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| Caloneis clevei f. inaequalis E. Manguin 1942 |
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| Cymbella cesatii f. minor E. Manguin 1942 |
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| Cymbella perpusilla var. azorica E. Manguin 1942 |
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| Eunotia pectinalis f. affines Manguin 1942 |
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| Fragilaria punctatostriata (punctato-striata) Manguin 1942 |
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| Frustulia rhomboides var. rostrata Manguin 1942 |
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| Gomphonema parvulum f. affine Manguin 1942 |
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| Gomphonema salinarum Pantocsek in Fricke apud A. Schimdt 1942 |
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| Melosira cataractarum f. laevis Manguin 1942 |
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| Navicula dispersa Manguin 1942 |
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| Navicula dispersa f. constricta Manguin 1942 |
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| Navicula dispersa f. rostrata Manguin 1942 |
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| Navicula infirma Manguin 1942 |
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| Navicula infirma Manguin 1942 |
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| Navicula mutica var. gomphonemoides Manguin 1942 |
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| Navicula radiosa f. intermedia Manguin 1942 |
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| Navicula simulata Manguin 1942 |
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| Navicula subminuscula Manguin 1942 |
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