Fragilariopsis nana
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Description
Forms short ribbon-shaped colonies in girdle view. Each cell has two chloroplasts located along the girdle. In girdle view, cells are low and rectangular. The valves are linear with parallel margins and rounded ends, have an eccentric raphe, no central nodule approximately the same number of striae and fibulae. Interstriae are parallel except at the poles.
Morphometrics
Morphometrics; Apical axis 4-16 µm, transapical axis 1.4-2.4 µm, 14-20 striae and fibulae in 10 µm.
Observations
Norway
Arctic Regions