| WebNameShort | |
| Achnanthes heterovalvata (Krasske) Frenguelli 1942 |
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| Achnanthes heterovalvata var. angustirostrata (Krasske) Frenguelli 1942 |
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| Caloneis subpatagonica Frenguelli 1942 |
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| Caloneis subpatagonica f. curta Frenguelli 1942 |
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| Cocconeis neuquina Frenguelli 1942 |
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| Cyclotella stelligera var. elliptica Frenguelli 1942 |
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| Cyclotella stipata Frenguelli 1942 |
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| Cymbella neuquina Frenguelli 1942 |
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| Cymbella rigida Frenguelli 1942 |
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| Diploneis andina Frenguelli 1942 |
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| Encyonema patagonicum Frenguelli 1942 |
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| Encyonema subturgidum Frenguelli 1942 |
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| Eunotia andina Frenguelli 1942 |
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| Eunotia polydentula var. ventricosa (M. Peragallo) Frenguelli 1942 |
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| Fragilaria fonticola f. constricta Frenguelli 1942 |
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| Fragilaria fonticola var. subcapitata Frenguelli 1942 |
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| Fragilaria fonticola var. tetragona Frenguelli 1942 |
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| Gomphonema acuminatum var. spoliata Frenguelli 1942 |
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| Gomphonema frickei var. andina Frenguelli 1942 |
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| Gomphonema frickei var. andina Frenguelli 1942 |
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