Pinnularia aff. molaris see note
Length:31.5

 Width:6

 Striae:16






























Collection 1781

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Caloneis molaris (Grunow) Krammer 1985 (Fig. 174:16-21)(Krammer and Lange-Bertalot (2/1) 1986).

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This image was taken utilizing DIC for the specimen above.


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This identification is not definite. The description is taken from Krammer for Caloneis molaris. Valve linear-lanceolate, sides convex. Ends slightly set off, blunt and flatly rounded. Raphe is somewhat bent, middle lateral. Proximal ends with large, distinct, bent poles. Central facia varying. Striae parallel to varying (Krammer and Lange-Bertalot (2/1) 1986).


  • Ecology
    Cosmopolitan. Found in plains to moutain. Never abundant(Krammer and Lange-Bertalot (2/1) 1986).

    Size ranges and morphology

  • Length is 26 to 65 micrometers (Krammer and Lange-Bertalot (2/1) 1986).
  • Width is 5 to 10 micrometers (Krammer and Lange-Bertalot (2/1) 1986).
  • Striae are 17 to 22 in 10 micrometers (Krammer and Lange-Bertalot (2/1) 1986).