Pinnularia abaujensis v. rostrata Patrick
Length:69

 Width:12

Striae:10






























Collection 1177a

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Pinnularia abaujensis var. rostrata Patrick in: Patrick and Reimer 1966, p. 614. 1966(Patrick and Reimer 1966).

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This taxon has linear valve with rostrate, rounded apices. It differs from P. abaujensis by it's rostrate apices that are narrower that the main body of the valve and by the shape of the central area which does not form a transverse fascia (Patrick and Reimer 1966).


  • Type Locality
    U.S.A., Monroe County, Pocono Lake Preserve, Pocono Lake, Pennsylvania (Patrick and Reimer 1966).

  • Synonyms
    Pinnularia gibba var. linearis Hustedt in: Pascher, Sussw.-F1. Mitteleuropas, Heft 10, Aufl. 2, p. 327, fig. 604. 1930(Patrick and Reimer 1966).

  • Ecology
    This taxon is found in water of low mineral content which is slightly acidic(Patrick and Reimer 1966; Beaver 1981).

    Size ranges and morphology

  • Length is 60 to 79 micrometers (Patrick and Reimer 1966).
  • Width is 8 to 11 micrometers (Patrick and Reimer 1966).
  • Striae are 8 to 11 in 10 micrometers (Patrick and Reimer 1966).