Cyanobacterial cells

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thumbnail|Intercalary located akinete of Dolichospermum smithii thumbnail|Terminally located akinete of Gloeotrichia thumb|right|Akinetes, also termed "cysts", of Haematococcus An akinete is an enveloped, thick-walled, non-motile, dormant cell formed by both cyanobacteria and algae. Cyanobacterial akinetes are mainly formed by filamentous, heterocyst-forming members under the order Nostocales and Stigonematales. Eukaryotic microalgae also produce akinetes, such as Haematococcus.

thumb|Nostoc with hormogonia Hormogonia are motile filaments of cells formed by some cyanobacteria in the order Nostocales and Stigonematales. They are formed during vegetative reproduction in unicellular, filamentous cyanobacteria, and some may contain heterocysts and akinetes.