Spaulding, S.
(2013).
Hantzschia.
In Diatoms of North America.
Retrieved December 02, 2024, from https://diatoms.org/genera/hantzschia
Nitzschioid
Hantzschia
Valves asymmetric to apical axis
Raphe eccentric
Frustule with both raphes on same side
Striae uniseriate
Valves are asymmetric to the apical axis. Like Nitzschia, the raphe is contained within a canal and eccentrically positioned on the valve margin. In Hantzschia, the raphe is always located on the concave, or ventral, margin of the valve. Striae are uniseriate.
The genus Hantzschia differs from Nitzschia in symmetry. Within a Hantzschia...