| WebNameShort | |
| Gyrosigma scalproides var. caimia Schulz 1926 |
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| Gyrosigma spenceri (spencerii) var. arnotti (Cleve & Grunow) Schulz 1926 |
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| Gyrosigma spenceri (spencerii) var. borealis (Grunow in Cleve & Grunow) Schulz 1926 |
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| Mastogloia braunii (brauni) f. minor Schulz 1926 |
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| Mastogloia grevillei var. duplopunctata Schulz 1926 |
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| Mastogloia oestrupi (oestrupii) Schulz 1926 |
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| Navicula abrupta var. linearis Schulz 1926 |
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| Navicula arenicola var. laticeps Schulz 1926 |
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| Navicula cancellata f. constricta Schulz 1926 |
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| Navicula cancellata f. minor Schulz 1926 |
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| Navicula cancellata f. stauroneiformis P. Schulz 1926 |
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| Navicula finmarchica (finnmarchica) var. elliptica Schulz 1926 |
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| Navicula gastrum var. exigua Schulz 1926 |
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| Navicula gastrum var. jenisseyensis sensu Schulz 1926 |
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| Navicula glacialis var. constricta Schulz 1926 |
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| Navicula helensis Schulz 1926 |
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| Navicula hennedyi (hennedii) f. subrostrata Schulz 1926 |
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| Navicula latissima var. constricta Schulz 1926 |
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| Navicula oestrupii (oestrupi) Schulz 1926 |
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| Navicula oestrupii (oestrupi) f. elliptica Schulz 1926 |
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