Unicellular or colonial chlorophyte with small crescent-shaped cells, each containing a green parietal chloroplast with pyrenoid. Several cells may cluster together to form a disorganised colony, which is not bound in mucilage.
Selenastrum, Lake Rotoiti, X640. Photo: Otago Regional Council & Manaaki Whenua
Typical habitats
Found in the plankton of nutrient-rich ponds including sewage ponds
![[Selenastrum], Lake Rotoiti, X640. Photo: Otago Regional Council & Manaaki Whenua Image](/assets/Tools-And-Resources/Identification/algae/selenastrum640__ScaleWidthWzEwMjRd.jpg)