| WebNameShort | |
| Actinoptychus minutus f. major Forti 1912 |
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| Cocconeis praecellens var. paucistriata Forti 1912 |
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| Gephyria rinnboeckii (Pantocsek) Forti 1912 |
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| Isthmia squinaboli var. crassior Forti 1912 |
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| Leudugeria epithemioides var. subarcuata Tempère in Forti 1912 |
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| Lithodesmium ehrenbergii (Grunow in Van Heurck) Forti 1912 |
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| Lithodesmium ehrenbergii Forti 1912 |
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| Lithodesmium ehrenbergii f. dicentrica quadragona Forti 1912 |
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| Melosira ornata var. reducta Forti 1912 |
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| Palmeria capillaris (J. Brun) Forti 1912 |
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| Stephanopyxis lineata (Ehrenberg) Forti 1912 |
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| Stephanopyxis polaris (Grunow) Forti 1912 |
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| Stephanopyxis polaris var. antiqua (Pantocsek) Forti 1912 |
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| Stictodiscus parallelus f. minor Forti 1912 |
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| Stictodiscus parallelus var. trigona Forti 1912 |
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| Triceratium grande Forti 1912 |
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| Triceratium grande f. quadrata Forti 1912 |
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| Triceratium pantocsekii var. rectangularis Forti 1912 |
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| Triceratium radians var. italica Forti 1912 |
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| Triceratium subrotundatum sensu Forti 1912 |
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