Prostanthera decussata F.Muell.

Dense Mint-bush

Fragm. 1: 126 (1859) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Threat status:Victoria: rare (r)

Compact, dense shrub to c. 2 m high, strongly aromatic; branches densely covered with short and long, spreading to subpatent hairs. Leaves ovate to narrowly ovate (young leaves broadly ovate), moderately thick, 4–7 mm long, 1–3.5 mm wide, dark green above, paler below, moderately covered with stiff, tuberculate, multicellular hairs, densely glandular on lower surface, base narrowly obtuse; margin entire, strongly recurved to revolute, apex obtuse; petiole 0–0.6 mm long. Flowers appearing axillary in distal nodes; bracteoles persistent, 2.5–3 mm long, 0.4–0.8 mm wide. Calyx 3.5–4 mm long, tube 1–1.5 mm long, adaxial lobe 2–2.5 mm long (not or only slightly enlarged in fruit); corolla mauve to violet, occasionally pinkish, markings absent, 6–8 mm long; anther appendage absent. Flowers Oct.–Mar.

CVU, EGU, GGr, HNF, HSF, MonT, NIS, VAlp, VRiv, WPro. Also NSW. Scattered through open-forests and shrublands on and east of the Brisbane Range.

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, 2018-08-24
Hero image
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Asteranae
order Lamiales
family Lamiaceae
genus Prostanthera
Higher taxa


Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <>. Find Prostanthera decussata in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Prostanthera decussata in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Victorian Riverina present native
Central Victorian Uplands present native
Greater Grampians present native
Northern Inland Slopes 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
New South Wales
Australian Capital Territory