Nature conservation

Threatened species

Somersby Mintbush - profile

Indicative distribution

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The areas shown in pink and/purple are the sub-regions where the species or community is known or predicted to occur. They may not occur thoughout the sub-region but may be restricted to certain areas. ( click here to see geographic restrictions). The information presented in this map is only indicative and may contain errors and omissions.
Scientific name: Prostanthera junonis
Conservation status in NSW: Endangered
Commonwealth status: Endangered
Profile last updated: 12 Aug 2019


Low spreading shrub 0.1 - 0.3 m and up to 1 m diameter. In open sites, branches appear wiry and are often prostrate. Where vegetation is denser, the plants have long spindly branches which weave through other vegetation and can grow up to 1m high. Leaves are oval in shape, dull green above and paler below. Flowers are 8 - 12 mm long and pale mauve to almost white with brown spots in the throat.


Has a north-south range of approximately 19 km on the Somersby Plateau in the Gosford and Wyong local government areas.

Habitat and ecology

  • The species is restricted to the Somersby Plateau. It occurs on both the Somersby and Sydney Town soil landscapes on gently undulating country over weathered Hawkesbury sandstone within open forest/low woodland/open scrub. It occurs in both disturbed and undisturbed sites.
  • The dominant flowering period for this species is October to mid-December depending on weather/site conditions. The plant is very difficult to identify outside of this time.
  • While mature plants appear to be incapable of resprouting after fire, it may trigger seed germination.

Regional distribution and habitat

Click on a region below to view detailed distribution, habitat and vegetation information.


Recovery strategies

Activities to assist this species

Information sources

IBRA Bioregion IBRA Subregion Known or predicted Geographic restrictions region
Sydney BasinPittwater Known None
Sydney BasinWyong Predicted None