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Guide to Cocconeis pseudothumensis

E.Reichardt 1982

Cocconeis Pseudothumensis Guide
Credit: Marina Potapova
  1. Valves oval
  2. Raphe valve with fine striae
  3. Rapheless valve with coarse striae
  4. Rapheless valve with broad axial area

Valves are oval. The striae of the raphe valve are fine, while the striae of the rapheless valve are coarse and distinct. The axial area of the rapheless valve is broad and lanceolate.