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Diagnostic features

Unbranched filamentous charophyte with long cylindrical cells. A single ribbon-like green chloroplast, containing a row of circular pyrenoids, runs through the middle of the cell; this is often twisted so it can be seen in more than one plane. Purple cell sap may be present in some habitats.

Typical habitats

Slow-flowing waters of moderate to good quality


Kingdom Plantae
Phylum Charophyta
Class Zygnemophyceae
Order Zygnematales
Family Zygnemataceae
Common name Green algae