General appearance of alga? Simple branched algae one cell thick.
Aquatic type? lake; or pond; or river or stream; or bogs; or puddles and ditches.
Free-living or attached? attached to plants or algae.
Motile? Not motile.
Is mucilage or gelatinous material present? Absent.
Filament: Branching type true branching.
Filaments in bundles? not recorded.
Filament: Cell arrangement cells abutting.
Filament: Filament diameter not recorded.
Cell: Individual cell shape cylindrical.
Cell: Is there a median constriction (isthmus)? Absent.
Cell: Do the cells bear spines or cellular extensions? Present.
Cell: How many flagella per cell? Absent.
Cell: Is a red eyespot conspicuous? no.
Cell: Heterocytes absent.
Cell: Akinetes absent.
Cell: Cell length 6–20 µm.
Cell: Cell diameter 5–10 µm.
Cell: How many pyrenoids per plastid? 1–10.
Cell: How many plastids? 1.
Cell: Plastid shape? sheet or longitudinal plate.
Cell: Position of plastid in cell? Parietal.
Colony: Are remnants of the mother cell wall present or is the entire mother cell wall persistent? not recorded.
Colony: cell arrangement not recorded.
Colony: Shape of colony? not recorded.
Colony: Are cells or groups of cells connected by mucilaginous threads? No.
Colony: Cells in one layer or throughout not recorded.
Capable of forming blooms? Not observed.
Classification: Division Chlorophyta (Green Algae).
Classification: Class Chlorophyceae.
Classification: Family Chaetophoraceae.
Reference Smith (1950:163), Prescott (1951:125), Dillard (1999:135), Ling et al. (2000:126), Day et al. (1995:50), Entwisle et al. (1999c).