Delicata Delicatula Guide
  1. Valves lanceolate
  2. Valves dorsiventral
  3. Apices narrow
  4. Axial area relatively wide

Valves are lanceolate and weakly dorsiventral. Apices are acutely rounded and sometimes apiculate. The apices may be dorsally bent. The axial area is relatively wide.

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