Arthrospira

Arthrospira
	A single Arthrospira platensis colony
Scientific classification
Domain:	Bacteria
Phylum:	Cyanobacteria
Class:	Cyanophyceae
Order:	Oscillatoriales
Family:	Microcoleaceae
Genus:	Arthrospira; Sitzenberger ex Gomont, 1892
Species
	About 35. Arthrospira ardissonei; Arthrospira erdosensis; Arthrospira fusiformis; Arthrospira indica; Arthrospira innermongoliensis; Arthrospira jenneri; Arthrospira massartii; Arthrospira maxima; Arthrospira platensis;

Arthrospira is a genus of free-floating filamentous cyanobacteria characterized by cylindrical, multicellular trichomes in an open left-hand helix. A dietary supplement is made from A. platensis and A. maxima, known as spirulina. The A. maxima and A. platensis species were once classified in the genus Spirulina. Although the introduction of the two separate genera Arthrospira and Spirulina is now generally accepted, there has been much dispute in the past and the resulting taxonomical confusion is tremendous.

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