Staurosirella pinnatavar. intercedens (Grun. in VanHeurck) Hamilton in Hamilton et al. 1994
Length: 24

 Width: 4

Striae: 9






























Collection 1284a

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Authority information

For new variety combination, see Hamilton et al. (1994). For genera transfer see Williams and Round (1987).


More information

Originally, the pictured specimen was identified as Fragilaria pinnata var. intercedens in Stoermer and Yang (1969)) and the following information refers to this taxon.
  • Synonyms (Patrick and Reimer 1966)
    Fragilaria pinnata var. intercedens(Grun.) Hust.in Rabh., vol. 7(2), no. 2, p. 161. 1931
    Odontidium mutabile W. Smith 1856
    Fragilaria mutabile Grunow 1862
    Fragilaria mutabile var. intercedens Grunow 1881

  • Ecology
    Fragilaria pinnata var. intercedens is a tolerant, freshwater species (Patrick and Reimer 1966).

    Size ranges and morphology

    For Fragilaria pinnata var. intercedens :
  • Length is 15-34 micrometers (Patrick and Reimer 1966).
  • Breadth is 4-6 micrometers (Patrick and Reimer 1966).
  • Striae range is 6-8 per 10 micrometers (Patrick and Reimer 1966).