Mentha diemenica Spreng.

Slender Mint

Syst. Veg. 2: 724 (1825) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Rhizomatous, often mat-forming herb; branches ascending or prostrate, often rooting at lower nodes, with short, sparse to dense, recurved hairs. Leaves ovate (rarely elliptic), 6–20 mm long, 4–12 mm wide, at least lower surface with scattered, short erect hairs, apex subacute to rounded, margin entire or sometimes sparsely serrate; petiole 0–3 mm long. Flowers in (1–)3–8-flowered clusters in axils of distal leaves; pedicels much shorter than calyx. Calyx 3–5 mm long, 13-ridged, lobes narrowly to broadly acute, up to c. two-thirds length of tube, with scattered to dense short hairs outside, inside and margins with sparse to dense long hairs; corolla purple, often pale, exceeding calyx by 0.5–2 mm, lobes c. 1–2 mm long, the posterior one emarginate to bilobed; anthers usually shortly exserted. Flowers throughout the year.

Brid, CVU, DunT, EGL, EGU, GipP, Glep, Gold, GGr, HNF, HSF, LoM, MonT, MuF, MuM, NIS, OtP, SnM, VAlp, VRiv, VVP, WaP, WPro, Wim. Also SA, Qld, NSW, ACT, Tas. Scattered in seasonally moist to dryish, often shaded habitats mostly south of the Great Dividing Range (some mapped, unvouchered records from northern Victoria may refer to M. satureoides).

Var. serpyllifolia (Benth.) J.H. Willis includes plants with small (usually no longer than 1 cm long) entire leaves, and flowers usually solitary in axils. Plants with the above characteristics appear to be confined in Victoria to Wilsons Promontory and islands of Corner Inlet. However, a wide range of specimens of apparently intermediate character occur through southern Victoria and it is doubtful that the variety warrants formal status. See also notes under Mentha satureioides.

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, 2019-08-26
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 diemenica in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Mentha diemenica in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Lowan Mallee present native
Murray Mallee present native
Wimmera present native
Glenelg Plain present native
Bridgewater present native
Victorian Volcanic Plain present native
Victorian Riverina 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
Greater Grampians 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
Snowy Mountains present native

State distribution

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