Open main menu

Scytonema is a genus of photosynthetic cyanobacteria that contains over 100 species. It grows in filaments that form dark mats. Many species are aquatic and are either free-floating or grow attached to a submerged substrate, while others species grow on terrestrial rocks, wood, soil, or plants. Scytonema is a nitrogen fixer, and can provide fixed nitrogen to the leaves of plants on which it is growing.[1] Some species of Scytonema form a symbiotic relationship with fungi to produce a lichen.

Heterocyst of Scytonema crispum
Heterocyst of Scytonema crispum
Scientific classification e
Domain: Bacteria
Phylum: Cyanobacteria
Class: Cyanophyceae
Order: Nostocales
Family: Scytonemataceae
Genus: Scytonema
C.Agardh ex É.Bornet & C.Flahault, 1886
Type species
Scytonema hofmanii

See text.


Scytonema includes the following subtaxa:[2]


  1. ^ "Archived copy". Archived from the original on 2010-06-19. Retrieved 2010-03-09.CS1 maint: Archived copy as title (link)
  2. ^ M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2018. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. ; searched on 17 August 2018.

External linksEdit