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| Navicula brekkaensis var. lata Cholnoky 1954 |
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| Navicula casei (chasei) Cholnoky 1954 |
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| Navicula chasei (casei) Cholnoky 1954 |
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| Navicula hustedtii var. rhodesica Cholnoky 1954 |
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| Navicula lagerheimii f. rotundata Cholnoky 1954 |
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| Navicula umtalensis Cholnoky 1954 |
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| Navicula vumbae Cholnoky 1954 |
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| Nitzschia bacillariaeformis var. producta Cholnoky 1954 |
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| Nitzschia chasei Cholnoky 1954 |
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| Nitzschia erlandssonii Cholnoky 1954 |
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| Nitzschia parvuloides f. curta Cholnoky 1954 |
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| Nitzschia reguloides Cholnoky 1954 |
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| Nitzschia vonhauseniae (von hauseniae) Cholnoky 1954 |
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| Pinnularia borealis f. minuta Cholnoky 1954 |
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| Pinnularia borealis var. rhodesica Cholnoky 1954 |
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| Pinnularia brasiliensis var. debegenica Cholnoky 1954 |
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| Pinnularia chasei Cholnoky 1954 |
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| Pinnularia debegenica Cholnoky 1954 |
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| Pinnularia kraeuselii Cholnoky 1954 |
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| Pinnularia nodosa var. debegenica Cholnoky 1954 |
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