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Bacillariaceae
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Bacillariales
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Bacillariophyceae
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Canada
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Chromista
Cymatopleura
Cymatopleura solea
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Denticula
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Denticula tenuis
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Epithemia
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Epithemia smithii
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North America
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Ochrophyta
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Rhopalodia
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Rhopalodia gibba
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Rhopalodiaceae
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Rhopalodiales
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Rocky Mountains
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Surirellaceae
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Surirellales
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biogeography
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ecology
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floristics
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taiga
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tundra
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