Najas tenuifolia R.Br.

Water Nymph

Prodr. 345 (1810) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Threat status:Victoria: rare (r)

Herb up to 1 m long; monoecious. Leaves 14–27(–50) × 0.2–1(–3) mm, length to width ratio 30–62; sheath with auricle triangular to narrowly triangular; lamina margin with teeth up to c. 0.1 mm long, dorsal surface without teeth; leaf-sheath scales narrowly triangular to linear-triangular. Flowers 1–3 together. Male flowers with outer cup-like structure 2–3.8 mm long. Female flowers (1–)1.5–3.5(–4) mm long; stigmas 2. Flowers Jan.–Mar., or irregularly.

NIS, RobP, VRiv. All mainland States. Malesia, New Caledonia. In still or slowly moving fresh or occasionally brackish water of billabongs and tributaries of the Murray River.

Source: Conn, B.J. (1994). Najadaceae. 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
superorder Lilianae
order Alismatales
genus Najas
Higher taxa


Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <>. Find Najas tenuifolia in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Najas tenuifolia in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Victorian Riverina present native
Robinvale Plains present native
Northern Inland Slopes present native

State distribution

Distribution map
Western Australia
Northern Territory
South Australia
New South Wales