Azolla pinnata R.Br.

Prodr. 167 (1810) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Roots pendent, with numerous, fine, feathery, lateral rootlets. Plants more or less triangular in outline, regularly and pinnately branched, to c. 3 cm across. Leaves oblong-triangular with rounded apex, surface with membranous papillae in basal half; margins slightly membranous. Microsporangial massulae more or less conical, with 1–6 non-barbed processes aggregated at one end.

CVU, EGL, EGU, GipP, HSF, MuF, MuM, MSB, NIS, RobP, VRiv, VVP, Wim. Scattered throughout northern Victoria and Goulburn River valley upstream to Eildon Reservoir, also southern parts of East Gippsland. Grows in slow-moving water as well as still backwaters, dams and billabongs.

Source: Entwisle, T.J. (1994). Ferns and allied plants (Psilophyta, Lycopodiophyta, Polypodiophyta). In: Walsh, N.G.; Entwisle, T.J. (eds), Flora of Victoria Vol. 2, Ferns and Allied Plants, Conifers and Monocotyledons. Inkata Press, Melbourne.
Hero image
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
order Salviniales
family Salviniaceae
genus Azolla
Higher taxa


Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <>. Find Azolla pinnata in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Azolla pinnata in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Murray Mallee present native
Wimmera present native
Victorian Volcanic Plain present native
Victorian Riverina present native
Murray Scroll Belt present native
Robinvale Plains present native
Murray Fans present native
Gippsland Plain present native
Central Victorian Uplands present native
Northern Inland Slopes present native
East Gippsland Lowlands present native
East Gippsland Uplands present native
Highlands-Southern Fall present native

State distribution

Distribution map
Western Australia
Northern Territory
South Australia
New South Wales
Australian Capital Territory