Prostanthera incisa R.Br.

Cut-leaf Mint-bush

Prodr. 509 (1810) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Threat status:Victoria: rare (r)

Erect, openly branched shrub, 2–2.5 m high, strongly and rather unpleasantly aromatic; branches laterally ridged, moderately to densely covered with short, curled hairs, densely covered with subsessile glands. Leaves ovate, (10–)15–30 mm long, 8–12 mm wide, green, paler below, covered with short, curled hairs basally and along midrib of abaxial surface, densely covered with subsessile glands, base short- to long-attenuate, margin more or less coarsely toothed with teeth directed forward to laterally, apex obtuse; petiole 3–10 mm long. Inflorescence racemose, often leafy near base; bracteoles not persistent, c. 1 mm long and 0.2 mm wide. Calyx 4–5 mm long, tube c. 2 mm long, adaxial lobe c. 2 mm long (slightly enlarged in fruit); corolla pale mauve to mauve, 7–10 mm long; anthers with appendage only slightly extended beyond locule, hence appearing absent, each locule with a basal tuft of narrowly triangular trichomes. Flowers spring.

EGL, EGU. Also NSW. In Victoria mosty confined to moist open-forests and tall shrublands on foothills of the Howe Range, east of Mallacoota Inlet, with a very small, isolated population near Bemm River.

The more easterly Victorian populations were formerly threated as a form of Prostanthera melissifolia, or an unnamed entity with affinities to it (see Conn 1998). They have moderately large (to 30 mm long) leaves with rather obscure marginal teeth. The Bemm River population appears to be the commoner form of the species in New South Wales with leaves to 15 mm long and typically 3 prominent tooth on each margin.

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: Neville Walsh, 2020-02-04
Hero image
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Asteranae
order Lamiales
family Lamiaceae
genus Prostanthera
Higher taxa

Victoria

Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <http://avh.chah.org.au>. Find Prostanthera incisa in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Prostanthera incisa in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
East Gippsland Lowlands present native
East Gippsland Uplands present native

State distribution

Distribution map
State
Queensland
New South Wales
Australian Capital Territory
Victoria
Tasmania