Nostocales

Nostocales
Anabaena flos-aquae
Scientific classification
Domain:	Bacteria
Kingdom:	Bacillati
Phylum:	Cyanobacteriota
Class:	Cyanophyceae
Order:	Nostocales T.Cavalier-Smith
Families [1] [2]
Aphanizomenonaceae Elenkin Capsosiraceae (Geitler) Elenkin Chlorogloeopsidaceae (Mitra) Mitra & Pandey Fortieaceae Gloeotrichiaceae Komárek et al. 2014 Godleyaceae Hauer, Mareš, Bohunická, Johansen, & Berrendero-Gomez Hapalosiphonaceae Elenkin Nostocaceae C. A. Agardh ex Kirchner Rhizonemataceae [3] Rivulariaceae Kützing ex Bornet & Flahault Scytonemataceae Rabenhorst ex Bornet & Flahault Stigonemataceae Borzì Symphyonemataceae Hoffmann, Komárek, & Kaštovský Tolypothrichaceae Hauer, Mareš, Bohunická, Johansen, & Berrendero-Gomez
Synonyms
Hormogonales

The Nostocales are an order of cyanobacteria containing most of its species. It includes filamentous forms, both simple or branched, and both those occurring as single strands or multiple strands within a sheath. Some members show a decrease in width from the base, and some have heterocysts.

References

1. Komárek J, Kaštovský J, Mareš J, Johansen JR (2014). "Taxonomic classification of cyanoprokaryotes (cyanobacterial genera) 2014, using a polyphasic approach" (PDF). Preslia. 86: 295–335.
2. "Nostocales on www.bacterio.cict.fr". Archived from the original on 2012-03-19. Retrieved 2010-11-04.
3. Lücking, Robert; Barrie, Fred R.; Genney, David (2014). "Dictyonema coppinsii, a new name for the European species known as Dictyonema interruptum (Basidiomycota: Agaricales: Hygrophoraceae), with a validation of its photobiont Rhizonema (Cyanoprokaryota: Nostocales: Rhizonemataceae)". The Lichenologist. 46 (3): 261–267. doi:10.1017/S0024282913000352.