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Diagnostic features

Small to moderate size ovoid cells, each with a single green chloroplast lacking pyrenoids. May form colonies in mucilage, or occur singly. Some species divide on an oblique plane which is easy to recognise when present.

Typical habitats

May be free floating, or attached to the surfaces of plants, rocks or soil.


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