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Diatomella balfouriana form constricta
Form, Diatom
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Diploneis subconstricta fo. alpina
Form, Diatom
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Ellerbeckia arenaria form teres
Form, Diatom
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Eunotia exigua form linearis
Form, Diatom
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Eunotia monodon fo. monodon
Form, Diatom
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Eunotia monodon form curta
Form, Diatom
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Eunotia pectinalis form impressa
Form, Diatom
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Eunotia septentrionalis form geniculata
Form, Diatom
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Fragilaria constricta fo. constricta
Form, Diatom
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Fragilaria constricta fo. stricta
Form, Diatom
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Fragilariforma constricta form stricta
Form, Diatom
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Fragilariforma constricta form tetranodis
Form, Diatom
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Frustulia rhomboides fo. capitata
Form, Diatom
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Frustulia rhomboides form undulata
Form, Diatom
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Frustulia rhomboides var. saxonica fo. undulata
Form, Diatom
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Hantzschia amphioxys var. amphioxys f. capitata
Form, Diatom
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Luticola mutica form gibbosa
Form, Diatom
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Luticola mutica form intermedia
Form, Diatom
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Navicula approximata form morei
Form, Diatom
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Navicula cocconeiformis form parva
Form, Diatom