Aphanochaetaceae

Aphanochaetaceae is a family of green algae in the order Chaetophorales. It occurs mainly in freshwater habitats; it may inhabit running or stagnant water, sometimes within the mucilage of red algae or other green algae.

Members of the Aphanochaetaceae are filamentous algae; the filaments may be simple or branched, usually prostrate (lying horizontally relative to the substrate) or less commonly erect. The cells are spherical to cylindrical or irregularly shaped, with hairs. The hairs are mostly bulbous at the bases. Cells are uninucleate (with one nucleus) and a single chloroplast of varying morphology (discoid, ring-shaped or perforated) with one or more pyrenoids.