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Diagnostic features

Unicellular chlorophyte with an ovoid cell shape and a long straight spine extending from each end of the cell. There is a single cup-shaped chloroplast. Some authors include this genus within Micractinium.

Typical habitats

Found in the plankton of lakes and ponds


Kingdom Plantae
Phylum Chlorophyta
Class Trebouxiophyceae
Order Chlorellales
Family Oocystaceae
Common name Green algae