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Diagnostic features

Unicellular desmid with two symmetrical semicells which are usually longer than wide and have wavy, lobed edges. There is a distinct notch at the end of each semicell. Green chloroplasts, often with obvious ridges and pyrenoids, 1-2 per semicell. Cell wall may be covered with small protruberances, which may be difficult to see.

Typical habitats

Found in wetlands and other acidic waters


Kingdom Plantae
Phylum Charophyta
Class Zygnemophyceae
Order Desmidiales
Family Desmidiaceae
Common name Green algae