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Diagnostic features

Unicellular desmid with two ovoid semicells divided by a deep constriction or isthmus. Each semicell has 4 or more external spines perpendicular to the surface from which they arise, and 2 or more green chloroplasts.

Typical habitats

Found in wetlands and other acidic waters


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