Spaulding, S.,
Edlund, M.
(2008).
Distrionella.
In Diatoms of North America.
Retrieved October 15, 2024, from https://diatoms.org/genera/distrionella
Araphid
Distrionella
Valves elongated, with capitate ends
Striae unevenly spaced
Rimoportula single, often central within a stria near one pole
Frustules of Distrionella are elongated with capitate ends. Valves may be slightly asymmetric to the transapical axis. Striae are unevenly spaced and become scattered and more irregular at the valve ends. Transapical ribs often evident. A central sternum is absent. Porefields, composed of simple porelli, are present at both valve ends....