Staurosira construensvar.venter (Ehr.) Hamilton in Hamilton et al.

Length: 9

Width: 6


Collection 1574

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Authority information

For new variety combination, see Hamilton et al. (1992). For genera transfer see Williams and Round (1987).

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  • This variety is an intermediate between Staurosira construens var. construens and Staurosira construens var. pumila(Patrick and Reimer 1966).
  • Synonyms (Patrick and Reimer 1966)
    Fragilaria construens var. venter(Ehr.) Grun. in V.H., Syn. Diat. Belgique, p. 45, fig.
    21b, 22, 23, 24b, 26a-b. 1881.
    Fragilaria venter Ehr. 1854.

  • Ecology
    This species is widely distributed in waters with low nutrient levels(Patrick and Reimer 1966).

    Size ranges and morphology

  • Length is 5-9 micrometers (Patrick and Reimer 1966).
  • Breadth is 3-6 micrometers (Patrick and Reimer 1966).
  • Striae range is 14-17 per 10 micrometers (Patrick and Reimer 1966).
  • In Lake Michigan samples, the length does not exceed 10 micrometers (Stoermer and Yang 1969).