Fragilaria crotonensis Kitton 1869
Length: 57

 Width: 3

Striae:15































Collection 1227

 Other images

 More information



Return to Top Page Return to Genera List Return to Species List

Authority information

Kitton, Sci. Gossip, 5: 110, fig. 81. 1869 (Patrick and Reimer 1966).

Other images


This is an image of a Fragilaria crotonensis colony.

More information


  • The frustules are attached at the swollen central portion by valve faces into long ribbon-like colonies (Stoermer and Yang 1969).
  • Synonyms (Patrick and Reimer 1966)
    Synedra crotonensis (Kitton) Cl. and Moll, 1878.
    Synedra crotonensis var.prolongata Grun.
    Fragilaria smithiana Grun.
  • Ecology
    This species is planktonic and mesotrophic (Patrick and Reimer 1966).

    Size ranges and morphology

  • Length is 40-112 micrometers (Patrick and Reimer 1966).
  • Breadth is 2-4 micrometers (Patrick and Reimer 1966).
  • Striae range is 12-16 per 10 micrometer (Patrick and Reimer 1966).
  • In samples from Lake Michigan, the length of this species ranges from 40-112 micrometers. The breadth at the widest area ranges from 2-5 micrometers. Striae are indistinct with 12-16 striae in 10 micrometers (Stoermer and Yang 1969).