Mentha australis R.Br.

River Mint

Prodr. 505 (1810) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Soft herb, often sprawling, sometimes erect; branches often tinged purple, glabrous or hairy. Leaves narrowly ovate, 1.2–6 cm long, 0.8–2 cm wide, glabrous or shortly hispid (particularly on lower surface), apex acute, margin with 4–14 serrations; petiole 0–5 mm long. Flowers in dense 3–12-flowered clusters in axils of distal leaves; pedicels much shorter than calyx. Calyx 3–5 mm long, 13-veined, densely covered with short spreading hairs, lobes up to c. as long as tube; corolla white or pink, exceeding calyx by 1–3 mm, lobes c. 1–2 mm long, the posterior one emarginate; anthers shortly exserted. Flowers Feb.–Oct.

CVU, DunT, EGL, EGU, GipP, Glep, Gold, HNF, HSF, MonT, MuF, MuM, MSB, NIS, OtP, VAlp, VRiv, VVP, WaP, WPro, Wim. Also NT, SA, Qld, NSW, ACT, Tas. Widespread through the State, usually growing on margins of watercourses and swamps, lakes etc.

Source: Conn, B.J. (1999). Lamiaceae. In: Walsh, N.G.; Entwisle, T.J. (eds), Flora of Victoria Vol. 4, Cornaceae to Asteraceae. Inkata Press, Melbourne.
Updated by: Val Stajsic, 2019-02-06
Hero image
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Asteranae
order Lamiales
family Lamiaceae
genus Mentha
Higher taxa


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

State distribution

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