Long, spindle-shaped cells tapering to sharp points, weakly to strongly curved, row of pyrenoids absent; may cluster together in bundles.
Cells long, slender, slightly curvied; row of pyrenoids in chloroplast along cell length; ends are tapered but have rounded points.
![[Ankistrodesmus] (sewage pond), X400. Photo: Manaaki Whenua](/assets/Tools-And-Resources/Identification/algae/ankistrodesmus400__FillMaxWzMwMCwyMDBd.jpg)
![[Closteriopsis] (sewage pond), X640. Photo: Otago Regional Council & Manaaki Whenua](/assets/Tools-And-Resources/Identification/algae/closteriopsis640__FillMaxWzMwMCwyMDBd.jpg)