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Diagnostic features

Simple isopolar filaments lacking heterocytes and akinetes, with obvious constrictions between cells, partitioned into short segments of approx. 4-8 cells, which easily fragment from the filament. Fine mucilaginous sheath. Blue-green to yellow or brown.

Typical habitats

We have few records, but possibly more common in clean waters.


Kingdom Bacteria
Phylum Cyanobacteria
Class Cyanophyceae
Order Oscillatoriales
Family Oscillatoriaceae
Common name Cyanobacteria