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Diatoms of the United States is now known as Diatoms of North America.
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Williams and Round 1988      Category: Araphid
TYPE SPECIES: Staurosirella lapponica (Grunow in Van Heurck) Williams and Round




Image Credit: Eduardo Morales

CLASS: Fragilariophyceae
  ORDER: Fragilariales
    FAMILY: Fragilariaceae

  1. Striae composed of lineolate areolae
  2. One to two apical porefields
  3. Valves oval, linear or cruciform

The valves of Staurosirella are oval, linear or cruciform. Striae are composed of lineolate areolae. One to two apical porefields are present. Rimoportulae are absent. Neighboring cells may be linked together at valve faces to form colonies.

Staurosirella includes the former Fragilaria lapponica, F. pinnata, F. leptostauron and their allies. Cells attach to substrates by short stalks secreted by the apical porefield. Members of the genus are common in both lentic and lotic waters.

Cite This Page:
Spaulding, S., and Edlund, M. (2008). Staurosirella. In Diatoms of the United States. Retrieved May 23, 2018, from

Contributor: Sarah Spaulding | Mark Edlund - December 2008