| WebNameShort | |
| Achnanthes linearis var. nipponica Skvortzow 1937 |
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| Achnanthes okamurae Skvortzow 1937 |
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| Cymbella turgida f. minor Skvortzow 1937 |
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| Gomphonema augur var. okamurae Skvortzow 1937 |
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| Gomphonema ikeda Skvortzow 1937 |
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| Gyrosigma spenceri (spencerii) var. okamurae Skvortzow 1937 |
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| Melosira youngi (youngii) Skvortzow 1937 |
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| Navicula halophila var. okamurae Skvortzow 1937 |
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| Navicula hasta f. minor Skvortzow 1937 |
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| Navicula ikarii (jkarii) var. nipponica Skvortzow 1937 |
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| Navicula minima var. okamurae Skvortzow 1937 |
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| Navicula subtilissima var. okamurae Skvortzow 1937 |
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| Navicula ventralis var. okamurae Skvortzow 1937 |
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| Neidium iridis f. angusta Skvortzow 1937 |
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| Nitzschia okamurae Skvortzow 1937 |
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| Pinnularia gibba var. okamurae Skvortzow 1937 |
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| Pinnularia hustedtii var. nipponica Skvortzow 1937 |
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| Pinnularia kiusiuensis Skvortzow 1937 |
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| Stauroneis signata f. gracilis Skvortzow 1937 |
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| Surirella okamurae Skvortzow 1937 |
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