Diatoms of North AmericaDiatoms of North America
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Guide to Cymbellonitzschia

Hustedt in A. Schmidt 1924

Cymbellonitzschia Guide
Credit: Pat Kociolek
  1. Valves slightly to strongly asymmetric to the apical axis
  2. Raphe positioned on ventral margin
  3. Cells small

Cymbellonitzschia possesses a raphe on the ventral margin of the valve, similar to the genus Nitzschia. In contrast to Nitzschia, however, the valves of Cymbellonitzschia are slightly to strongly asymmetric to the apical axis. The striae are uniseriate. The cells of Cymbellonitzschia are small.

Cymbellonitzschia is an uncommon genus that grows on sand and sediment surfaces.