Amphikrikos

Amphikrikos
Scientific classification
Clade:	Viridiplantae
Division:	Chlorophyta
Class:	Trebouxiophyceae
Order:	Chlorellales
Family:	Oocystaceae
Genus:	Amphikrikos Korshikov
Type species
Amphikrikos minutissimus Korshikov
Species[1]
Amphikrikos bicingulis Amphikrikos buderi Amphikrikos hexacosta Amphikrikos heynigii Amphikrikos minutissimus Amphikrikos nanus Amphikrikos tetrangulata Amphikrikos variabilis

Amphikrikos is a genus of algae in the family Oocystaceae.[2] It is found in freshwater and has been reported from most continents.[1]

Amphikrikos consists of solitary, planktonic cells about 3–13 μm long and 2–9 μm wide. Cells are barrel-shaped, cylindrical, ellipsoid or broadly oval, with rounded poles. The cell may be surrounded by a thin, structureless mucilage layer. The cell wall is smooth, or covered with dark-brown incrustations on the surface which appear as granules or ribs, mainly near the equator and poles of the cell. Cells contain one (or two) chloroplasts, which is/are parietal and may have or lack a pyrenoid. Asexual reproduction occurs by the formation of typically four (rarely 2 or 8) autospores per cell; these are released through a tear in the mother cell wal.[1][3]

References

1. Guiry, M.D.; Guiry, G.M. "Amphikrikos". AlgaeBase. University of Galway. Retrieved 2025-01-30.
2. See the NCBI webpage on Amphikrikos. Data extracted from the "NCBI taxonomy resources". National Center for Biotechnology Information. Retrieved 2007-03-19.
3. Shubert, Elliot; Gärtner, Georg (2014). "Chapter 7. Nonmotile Coccoid and Colonial Green Algae". In Wehr, John D.; Sheath, Robert G.; Kociolek, J. Patrick (eds.). Freshwater Algae of North America: Ecology and Classification (2 ed.). Elsevier Inc. ISBN 978-0-12-385876-4.