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Keywords from Image Description:
Diatomaceae of Philadelphia Plate . follows PLATE Fig Rhabdonema arcuatum Lyng Kuetz Rhabdonema adriaticum Kuetz Rhabdonema minutum Kuetz Tabellaria flocculosa Roth Kuetz Tabellaria fenestrata Lyng Kuetz Grammatophora marina var subtilissima Bail Grammatophora angulosa var hamulifera Kuetz Grun Grammatophora marina Lyng