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Diagnostic features

Unbranched filamentous zygnematalean with cylindrical cells, each of which has two or more linear or slightly twisted, ribbon-like green chloroplasts containing pyrenoids.  Chloroplasts strongly resemble those of Spirogyra (a close relative), but are not spiralled. Conjugation also differs from that in Spirogyra, by lacking conjugation tubes.

Typical habitats

The specimen photographed was from a clean water site


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