Stichococcus is a genus of algae from the class of Trebouxiophyceae.


Stichococcus forms individually or in pairs merged cells, or simple unbranched filaments from a series of uniformly designed cells with thin cell wall. The cells are cylindrical, straight or slightly curved, with rounded cell ends within a thread. In each cell there is a parietal chloroplast with or without pyrenoid. Growth always occurs by cell division in the same direction.

Asexual reproduction occurs by Fadenfragmentation.

Sexual reproduction is not known.


The genus lived in the plankton of lakes and rivers; even on damp substrates such as soil, stones, flower pots or tree bark. Stichococcus can also act as partners in lichen algae symbioses.

Types (selection)

  • Stichococcus bacillaris
  • Stichococcus filiformis
  • Stichococcus minor
  • Stichococcus mirabilis
  • Stichococcus variabilis


  • Karl -Heinz Linne von Berg, Kerstin Hoef -Emden, Birger Marin, Michael Melkonian: The Cosmos algae leader. The main freshwater algae under the microscope. Franckh Cosmos, 2006, ISBN 3-440-09719-6.