Eudorina

Eudorina is a genus of green algae in the family Volvocaceae, containing about seven species. It has a cosmopolitan distribution in freshwater habitats.

== Description == Eudorina colonies typically consist of 16, 32 or 64 cells, each of which is similar to Chlamydomonas reinhardtii. These cells are bedded within an extracellular matrix composed of glycoproteins. Colonies are spherical and motile, with motility derived from the flagellated individual cells. Cells are ovoid or spherical, each with two equal flagella. (In one species Eudorina compacta, the cells essentially touch each other, and are strikingly angular due to mutual compression.) There is a single cup-shaped chloroplast with one (basal) or multiple pyrenoids) and a stigma. Multiple contractile vacuoles are scattered throughout the cytoplasm.