Oedogonium is an exclusively fresh water algae. Out of about 400 species more than 200 have been reported from India. They are very common in pools, ponds, lakes etc. The
filamentous plant body may get
attached with the stone, wood, leaves of aquatic plants, small branches of dead
plant remain in water etc. by their basal cell the holdfast. Some species like O.
terrestris are terrestrial.