Basionym: Nitzschia granii Hasle
Cells almost linear in girdle view. Spindle-shaped in valve view, tapering toward the ends. Fibulae are irregularly spaced with more than two interstriae per fibula. Raphe keel eccentric. Occurs as single cells within colonies of Phaeocystis and in the plankton.
Morphometrics: apical axis: 25-79 µm, transapical axis: 1.5-2.5 µm, 44-49 stria in 10 µm, 12-18 fibulae in 10 µm
Distribution: Norwegian Sea, Spitzbergen