| WebNameShort | |
| Achnanthes terrae-novae Woodhead & Tweed 1960 |
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| Achnanthes wrightiana Woodhead & Tweed 1960 |
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| Anomoeoneis canadensis Woodhead & Tweed 1960 |
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| Caloneis pseudoholstii Woodhead & Tweed 1960 |
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| Cymbella microcephala f. intermedia Woodhead & Tweed 1960 |
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| Eunotia arcadia Woodhead & Tweed 1960 |
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| Eunotia bactriana var. minor Woodhead & Tweed 1960 |
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| Eunotia faba f. recta Woodhead & Tweed 1960 |
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| Eunotia praemonos f. recta Woodhead & Tweed 1960 |
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| Eunotia reversa Woodhead & Tweed 1960 |
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| Eunotia smithii Woodhead & Tweed 1960 |
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| Eunotia triodon f. magna Woodhead & Tweed 1960 |
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| Eunotia veneris var. bidens Woodhead & Tweed 1960 |
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| Gomphocymbella canadensis Woodhead & Tweed 1960 |
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| Gomphocymbella sigmoidea Woodhead & Tweed 1960 |
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| Gomphonema intricatum var. tripunctatum Woodhead & Tweed 1960 |
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| Gomphonema semicruciatum Woodhead & Tweed 1960 |
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| Mastogloia lacustris var. canadensis Woodhead & Tweed 1960 |
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| Navicula buchansiana Woodhead & Tweed 1960 |
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| Navicula microcephala var. rostrata Woodhead & Tweed 1960 |
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