Diatoms of North AmericaDiatoms of North America
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Guide to Gomphonema brebissonii

Kütz. 1849

Gomphonema Brebissonii Guide
Credit: Pat Kociolek
  1. Valve biconstricted
  2. Headpole protracted and bluntly rounded

Valves bluntly acuminate, with the headpole protracted and bluntly rounded. The valve is biconstricted; it is broadest near the headpole, but tumid at the center of the valve. The raphe is lateral and undulate.