Enallax is a genus of green algae in the family Scenedesmaceae.

[2] It is found in freshwater habitats, such as peat bogs or wet rocks.

Cells are ellipsoidal, cylindrical or fusiform, with their longest axes aligned more or less parallel to each other.

[1] Cells may accumulate droplets of oil giving them a reddish color.

[4] The genus has existed since at least the Cretaceous period, as evidenced by amber deposits from France containing the fossil species Enallax napoleonis.