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Guide to Gomphonema vibrioides

Reichardt and Lange-Bert. 1991

Gomphonema vibrioides guide
  1. Valves narrow, elongate
  2. Raphe lateral
  3. Central area inflation variable
  4. Striae punctate, coarse
  5. Stigma single, isolated

Valves are narrow and elongate. The headpole is broader than the footpole. The center valve is inflated. Striae are punctate and coarse. There is an isolated stigma next to shortened median striae along the central area.