Oscillatoriales

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Arthrospira is a genus of free-floating filamentous cyanobacteria characterized by cylindrical, multicellular trichomes in an open left-hand helix. It was originally proposed in 1892 and went through a period of disuse between 1932 and 1974 due to an error perpetuated by Geitler. It contained the cultivated species used for producing spirulina until 2019, when it was found that the sequence of the type species A. jenneri was only distantly related to the cultivated species with several established genera in between, causing a new genus Limnospira to be created for them.

Trichodesmium, also called sea sawdust, is a genus of filamentous cyanobacteria. They are found in nutrient poor tropical and subtropical ocean waters (particularly around Australia and in the Red Sea, where they were first described by Captain Cook). Trichodesmium is a diazotroph; that is, it fixes atmospheric nitrogen into ammonium, a nutrient used by other organisms. Trichodesmium is thought to fix nitrogen on such a scale that it accounts for almost half of the nitrogen fixation in marine systems globally. Trichodesmium is the only known diazotroph able to fix nitrogen in daylight under ae

The Oscillatoriales are an order of cyanobacteria.

Lyngbya is a genus of cyanobacteria, unicellular autotrophs that form the basis of the oceanic food chain.

species of Cyanobacteria

species of cyanobacteria

The Microcoleaceae are a family of cyanobacteria.

Planktothrix is a diverse genus of filamentous cyanobacteria observed to amass in algal blooms in water ecosystems across the globe. Like all Oscillatoriales, Planktothrix species have no heterocysts and no akinetes. Planktothrix are unique because they have trichomes and contain gas vacuoles unlike typical planktonic organisms. Previously, some species of the taxon were grouped within the genus Oscillatoria, but recent work has defined Planktothrix as its own genus. A tremendous body of work on Planktothrix ecology and physiology has been done by Anthony E. Walsby, and the 55.6 kb microcystin

Cyanothece is a genus of unicellular, diazotrophic, oxygenic photosynthesizing cyanobacteria.

genus of Cyanobacteria

The Oscillatoriaceae are a family of cyanobacteria.

Geitlerinema is a genus of cyanobacteria belonging to the family Coleofasciculaceae.