| WebNameShort | |
| Amphora ehrenbergii Woodhead & Tweed 1960 |
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| Anomoeoneis zellensis var. hustedtii Woodhead & Tweed 1960 |
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| Cymbella ventricosa var. lunata (W. Smith in Greville) Woodhead & Tweed 1960 |
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| Diatoma hiemale (hyemale) var. mayeri Woodhead & Tweed 1960 |
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| Diploneis oblongella var. pumila (Grunow) Woodhead & Tweed 1960 |
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| Diploneis oblongella var. rhombica (Mayer) Woodhead & Tweed 1960 |
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| Eunotia curvata f. bergii Woodhead & Tweed 1960 |
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| Eunotia curvata var. campyla (Hilse in Rabenhorst) Woodhead & Tweed 1960 |
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| Eunotia curvata var. maxima (Meister) Woodhead & Tweed 1960 |
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| Eunotia diadema f. minuta (A. Berg) Woodhead & Tweed 1960 |
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| Fragilaria undata f. trinodis (Hustedt) Woodhead & Tweed 1960 |
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| Gomphonema acuminatum f. dippelii Woodhead & Tweed 1960 |
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| Gomphonema gracile var. clevei Woodhead & Tweed 1960 |
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| Gomphonema truncatum f. robustum (Mayer) Woodhead & Tweed 1960 |
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| Gomphonema truncatum f. turgidum (Ehrenberg) Woodhead & Tweed 1960 |
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| Navicula wrightiana Woodhead & Tweed 1960 |
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| Pinnularia gibba var. clevei (Meister) Woodhead & Tweed 1960 |
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| Pinnularia gibba var. interrupta (W. Smith) Woodhead & Tweed 1960 |
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| Pinnularia smithii Woodhead & Tweed 1960 |
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| Pinnularia smithii f. minor Woodhead & Tweed 1960 |
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