Pinnularia tenuis v. interrupta (Font.) Cleve-Euler




Collection 1784a

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Pinnularia tenuis v. interrupta (Font.) Cleve-Eulear in Die Diatomeen von Schweden und Finnland. IV, p. 15(Cleve- Euler, A. 1955).

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This image was taken with an additional 40% magnification.

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Narrowly linear with fine striae. Margin undulate. Ends protracted and slightly capitate. Axial area narrow with no special characteristics. Central area broad from fascia to valve margins, rarely complete fascia. Terminal nodule course. Striae fine, parallel or nearly so(Cleve- Euler, A. 1955).

  • Synonyms
    Navicula gentilis Donk., Nat. Hist. British Diat., p. 69, pl. 12, fig. 1. 1870-1873.(Cleve- Euler, A. 1955).

    Size ranges and morphology

  • Length is 20 to 50micrometers (Cleve- Euler, A. 1955).
  • Width is 4 to 6 micrometers (Cleve- Euler, A. 1955).
  • Striae are 15 to 25 in 10 micrometers (Cleve- Euler, A. 1955).