General appearance of alga? Unbranched filaments; or Blue-green algae - cells without organelles.
Colour? green; or blue; or black.
Habitat freshwater; or terrestrial.
Aquatic type? lake; or pond.
Free-living or attached? free-living.
Motile? Not motile.
Is mucilage or gelatinous material present? Mucilage present but not stratified.
Filament: Branching type not recorded.
Filaments in bundles? not recorded.
Filament: Cell arrangement cells abutting.
Filament: Filament diameter not recorded.
Cell: Individual cell shape globose or spherical; or cylindrical.
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 present and terminal in position.
Cell: Akinetes present and intercalary in position.
Cell: Cell length not recorded.
Cell: Cell diameter 3–10 µm.
Cell: How many pyrenoids per plastid? 0.
Cell: How many plastids? 0.
Cell: Plastid shape? not recorded.
Cell: Position of plastid in cell? not recorded.
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? Yes, unknown if harmful or toxic.
Distribution Northern Territory; or South Australia; or Queensland; or New South Wales; or Victoria.
Classification: Division Cyanobacteria (Blue-green algae).
Classification: Class Cyanophyceae.
Classification: Family Nostocaceae.
Reference Baker et al. (1999:29), Smith (1950:583), Bourelly (1970:420), Ling et al. (2000:26), Dillard (1999:112), Day et al. (1995:206), Entwisle et al. (1999c).