Spaulding, S.
(2011).
Tryblionella.
In Diatoms of North America.
Retrieved May 01, 2026, from https://diatoms.org/genera/tryblionella?x-craft-preview=409442409a997390693ff24c7010fd6f1c96fb56f8f091fa016a63de9a54aaccecpiqubknd
Nitzschioid
Tryblionella
Raphe eccentric
Valve face with longitudinal undulation
Valves are typically linear-lanceolate to elliptic in some species. Like Nitzschia, Tryblionella possesses an eccentric raphe, positioned in a canal along one valve margin. The raphe systems within a frustule are positioned on opposite, in the manner of nitzschioid symmetry. The raphe canal is supported by fibulae. Valves have a distinct...