Chaos (Latin) is a genus of red algae of the family Porphyridiaceae . The taxon was singled out by the French botanist and naturalist Jean-Baptiste Borie de Saint-Vincent in 1823 [1] . The name is rejected ( nom. Rej. ) In favor of Porphyridium , that is, when these genera are combined, the latter is considered the last name, although it was published later.
| Chaos |
| Scientific classification |
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| Subdivision : | Rhodophytina |
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| International Scientific Name |
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Chaos Bory ex Desm. , 1823, nom. rej. |
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The taxon is not generally accepted [1] ; Chaos may be the synonymous name of some other closely related genus [2] .
In the case of the isolation of a genus, it usually recognizes a single species - Chaos sanguinarius Bory ex Desm., Nom. superfl. . Sometimes Chaos also includes taxon Chaos bituminosus Bory (more often considered synonymous with Gloeocapsa bituminosa (Bory) Kütz. [3] ) [2] .
Type species , Chaos sanguinarius Bory ex Desm. , 1823 [≡ Porphyridium purpureum (Bory) KM Drew & R. Ross , 1965 ] is described from northern France , on the border with Belgium [4] .