Navicula pelagica
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Description
Ribbon shaped chains of cells that are rotated about the chain axis in relation to its neigbouring cells as some cells are seen in broad and some in narrow gidle view. Valves are boat shaped to linear with central and simple raphe. Cells have two comma or pear shaped chloroplasts
Morphometrics
Apical axis 10-50 µm, transapical axis 6-7 µm, pervalvar axis 5-9 µm. 50-56 stria in 10 µm
References
Throndsen J. Hasle G.R. and Tangen K. 2007. Phytoplankton of Norwegian coastal waters. Almater Forlag AS. 341 pp
Observations
Norway