Bishop, I.
(2017).
Psammodictyon.
In Diatoms of North America.
Retrieved November 21, 2024, from https://diatoms.org/genera/psammodictyon1
Nitzschioid
Psammodictyon
Valves constricted or panduriform
Raphe eccentric
Longitudinal undulation on valve face
Fibulae bifurcated by central nodule
Valves are linear to panduriform, with the diagonal symmetry characteristic of other nitzschioid genera. A longitudinal undulation, similar to that found in Tryblionella, is present. As in other nitzschoid genera, Psammodictyon posseses an eccentric, keeled, fibulate raphe system. Fibulae are bifurcated by a central nodule. Striae are...