- Chlamydomonas, genus Chlamydomonas - type genus of the Chlamydomonadaceae; solitary doubly-flagellated plant-like algae common in fresh water and damp soil; multiply freely; often a pest around filtration plants
--1 is a kind of protoctist genus
--1 is a member of Chlamydomonadaceae, family Chlamydomonadaceae