| WebNameShort | |
| Opephoropsis schwartzii (swartzii) (Grunow) Frenguelli 1945 |
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| Pinnularia aperta var. undulata (Frenguelli) Frenguelli 1945 |
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| Rhopalodia gibberula var. gravida Frenguelli 1945 |
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| Rhopalodia gibberula var. timsahensis (Otto Müller) Frenguelli 1945 |
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| Surirella tuberosa var. major Frenguelli 1945 |
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| Synedra platensis var. obtusa Frenguelli 1945 |
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| Tryblionella hantzschiana (hantzschia) var. debilis Frenguelli 1945 |
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| Tryblionella marginulata (Grunow) Frenguelli 1945 |
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| Tryblionella punctata f. paucistriata Frenguelli 1945 |
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| Tryblionella punctata var. protracta Frenguelli 1945 |
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