Spaulding, S.
(2021).
Ninastrelnikovia.
In Diatoms of North America.
Retrieved December 03, 2024, from https://diatoms.org/genera/ninastrelnikovia
Symmetric Biraphid
Ninastrelnikovia
Valves small, less than 25 µm
Valves with strong central inflation
Striae short, restricted to the valve margins
Cells joined in band-like colonies
Valves are symmetric to the apical and transapical axis. Valves are small, typically less than 25 µm. The central margin is strongly inflated and the apices are broadly rounded. Striae are restricted to the valve margins. The raphe is filiform. The proximal raphe ends are relatively widely spaced. The distal raphe ends are straight or...