General appearance of alga? Non-motile microalgae (single cells); or Soft or firm colony (many cells or filaments).
Aquatic type? lake; or pond.
Free-living or attached? free-living.
Motile? Not motile.
Is mucilage or gelatinous material present? Absent.
Filament: Branching type not recorded.
Filaments in bundles? not recorded.
Filament: Cell arrangement cells abutting.
Filament: Filament diameter not recorded.
Cell: Individual cell shape spindle-shaped.
Cell: Is there a median constriction (isthmus)? Absent.
Cell: Do the cells bear spines or cellular extensions? Absent.
Cell: How many flagella per cell? Absent.
Cell: Is a red eyespot conspicuous? no.
Cell: Heterocytes absent.
Cell: Akinetes absent.
Cell: Cell length 15–24 µm.
Cell: Cell diameter 2–3 µm.
Cell: How many pyrenoids per plastid? 1.
Cell: How many plastids? 1.
Cell: Plastid shape? discoid or plate-like.
Cell: Position of plastid in cell? Parietal.
Colony: Are remnants of the mother cell wall present or is the entire mother cell wall persistent? Mother cell wall absent.
Colony: cell arrangement Cells in groups of 2-4.
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 throughout colony.
Capable of forming blooms? Not observed.
Distribution Northern Territory; or South Australia; or Queensland; or New South Wales; or Victoria.
Classification: Division Chlorophyta (Green Algae).
Classification: Class Chlorophyceae.
Classification: Family Scenedesmaceae.
Reference Smith (1950: 275), Entwisle et al. (1997:32), Whitford et al. (1973:55), Dillard (1999:108), Prescott (1951:281), Ling et al. (2000:106), Day et al. (1995:170), Entwisle et al. (1999c).