[6] The cell wall of Desmodesmus consists of an outer layer with a net-like structure, with "rosettes" of tubes underneath.

[8] A factor that has long complicated the taxonomy of Scenedesmus and its related taxa is the fact that these algae show considerable phenotypic plasticity.

This plasticity has led taxonomists in the past to designate thousands of infraspecific names based on minute changes in spine morphology or cell shape.

[10] Desmodesmus species tolerate a wide range of habitats and conditions; this also makes them easy to culture.

In response to herbivory from predators such as Daphnia, Desmodesmus may develop spines or other defensive features.