Unicellular chlorophyte characterised by tetrahedral or polyhedral cells, with clusters of approx. 3-5 tapering spines radiating from the rounded corners. There is a single cup-shaped green chloroplast with single pyrenoid.
Found in the plankton of nutrient-rich ponds including sewage ponds
![[Polyedriopsis] (sewage pond), X640. Photo: Otago Regional Council & Manaaki Whenua Image](/assets/Tools-And-Resources/Identification/algae/polyedriopsis640__ScaleWidthWzEwMjRd.jpg)