Pinnularia subrostrata Cleve-Euler




Collection 1788

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Pinnularia subrostrata (A. Cleve) Cleve-Euler 1955 (Krammer 1992a).

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This image was taken utilizing DIC for the specimen above.

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Linear, linear-elliptic with weakly convex sides, sometimes almost triundulate. Ends broadly capitate and drawn out, almost without a definite shoulder. Axial area is thin. Central area is fascia. Central striae are strongly radial, end striae slightly to distinctly convergent (Krammer 1992a).

  • Distribution
    Swedish lapland to Middle Europe (Krammer 1992a).
  • Ecology
    This taxon seems to prefer lake waters, particularaly acidophilous ones(Beaver 1981).

    Size ranges and morphology

  • Length is 28 to 44 micrometers (Krammer 1992a).
  • Width is 5 to 8.5 micrometers (Krammer 1992a).
  • Striae are 9 to 12 in 10 micrometers (Krammer 1992a).