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Guide to Gomphonema turgidum

Ehrenb. 1854

Gomphonema Turgidum Guide
Credit: Ian Bishop
  1. Headpole broad, truncated
  2. Raphe complex, undulate
  3. Striae coarse, uniseriate
  4. Stigma present

Valves are strongly asymmetric to the transapical axis, with broad, truncated headpole. The central area is small ,with central striae of variable length. A single isolated stigma is present. Striae are coarse and uniseriate. Striae are parallel to weakly radiate, except at the footpole, where they become strongly radiate.

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