Order: Chroococcales
Encellede eller kolonidannende alger.
Systematics :
| Kingdom | Bakterieriket (Eubacteria) | |||||
| Division | Blågrønnbakterier (Cyanobacteria) | |||||
| Klasse | Blågrønnalger/blågrønnbakterier (Cyanophyceae) | |||||
| Order | Chroococcales | |||||
| Genus | Achroonema | |||||
| Genus | Aphanothece | |||||
| Species | Aphanothece clathrata | |||||
| Genus | Chroococcus | |||||
| Species | Chroococcus minutus | |||||
| Genus | Coelosphaerium | |||||
| Species | Coelosphaerium kuetzingianum | |||||
| Species | Coelosphaerium naegilianum | |||||
| Genus | Eucapsis | |||||
| Genus | Gomphosphaeria | |||||
| Species | Gomphosphaeria lacustris | |||||
| Species | Gomphosphaeria naegeliana | |||||
| Genus | Merismopedia | |||||
| Species | Merismopedia glauca | |||||
| Species | Merismopedia tenuissima | |||||
| Genus | Microcystis | |||||
| Species | Microcystis aeruginosa | |||||
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