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| Cymbella maculata var. curta (Van Heurck) Tempère & Peragallo 1909 |
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| Navicula legumen var. vix undulata (Van Heurck) Tempère & Peragallo 1909 |
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| Aulacodiscus moelleri var. distincta ‘Rattray’ Tempère & Peragallo 1909 |
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| Navicula debyi var. elliptica Cleve (ubi?) Tempère & Peragallo 1909 |
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| Pinnularia viridis var. major Cleve in Tempère & Peragallo 1909 |
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| Actinoptychus stella f. fenestrata Forti in Tempère & Peragallo 1909 |
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| Arachnoidiscus ornatus var. obscurus Forti in Tempère & Peragallo 1909 |
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| Aulacodiscus amoenus f. minor Forti in Tempère & Peragallo 1909 |
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| Aulacodiscus italicus Forti in Tempère & Peragallo 1909 |
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| Auliscus grunovii var. pantocsekii (pantocseckii) Forti in Tempère & Peragallo 1909 |
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| Auliscus lóczyi f. major Forti in Tempère & Peragallo 1909 |
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| Biddulphia tuomeyi var. centrospinosa Forti in Tempère & Peragallo 1909 |
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| Biddulphia tuomeyi var. media Forti in Tempère & Peragallo 1909 |
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| Cladogramma conicum var. campanulatum Forti in Tempère & Peragallo 1909 |
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| Coscinodiscus polyacanthus var. intermedia Forti in Tempère & Peragallo 1909 |
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| Hyalodiscus radiatus var. minor Forti in Tempère & Peragallo 1909 |
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| Melosira clavigera f. crassiradiata Forti in Tempère & Peragallo 1909 |
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| Melosira clavigera f. trinotata Forti in Tempère & Peragallo 1909 |
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| Melosira sulcata var. radiata Forti in Tempère & Peragallo 1909 |
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| Stephanogonia actinoptychus var. polyacantha Forti in Tempère & Peragallo 1909 |
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