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| Pinnularia gracilis var. americana Hustedt in Schmidt et al. 1934 |
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| Pinnularia hyalina Hustedt in Schmidt et al. 1934 |
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| Pinnularia krasskei Hustedt in Schmidt et al. 1934 |
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| Pinnularia krasskei var. ventricosa Hustedt in Schmidt et al. 1934 |
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| Pinnularia lacunarum Hustedt in Schmidt et al. 1934 |
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| Pinnularia laxa Hustedt in Schmidt et al. 1934 |
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| Pinnularia legumen var. cuneata Hustedt in Schmidt et al. 1934 |
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| Pinnularia leptosoma var. gracilis Hustedt in Schmidt et al. 1934 |
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| Pinnularia major (maior) var. capitata Hustedt in Schmidt et al. 1934 |
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| Pinnularia major (maior) var. clavata Hustedt in Schmidt et al. 1934 |
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| Pinnularia major (maior) var. sendaiensis Hustedt in Schmidt et al. 1934 |
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| Pinnularia obscura var. constricta Hustedt in Schmidt et al. 1934 |
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| Pinnularia ornata Hustedt in Schmidt et al. 1934 |
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| Pinnularia paludosa Hustedt in Schmidt et al. 1934 |
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| Pinnularia parvula Hustedt in Schmidt et al. 1934 |
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| Pinnularia rhombica Hustedt in Schmidt et al. 1934 |
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| Pinnularia rivularis Hustedt in Schmidt et al. 1934 |
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| Pinnularia robusta Hustedt in Schmidt et al. 1934 |
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| Pinnularia rostellata Hustedt in Schmidt et al. 1934 |
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| Pinnularia ruttneri Hustedt in Schmidt et al. 1934 |
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