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Diagnostic features

Cells spherical but may range greatly in size; unicellular, but cells may occur in clumps. Number of chloroplasts increases as cell size increases. Cells may contain an obvious orange pigment and a thick cell wall, especially when older.

Typical habitats

Known from clean water and soil sites


Kingdom Plantae
Phylum Chlorophyta
Class Chlorophyceae
Order Chlamydomonadales
Family Chlorococcaceae
Common name Green algae