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Guide to Frustulia saxonica

Rabenh. 1850

Frustulia Saxonica Guide
Credit: Carrie Graeff
  1. Valve shape variable
  2. Apices slightly constricted
  3. Porte-crayon relatively small

The degree of rhomboid valve shape is variable within populations, in direct proportion to valve size. The apices are slightly constricted and a relatively small porte-crayon is present.

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