Nature conservation

Threatened species

Prostanthera gilesii - 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 gilesii
Conservation status in NSW: Critically Endangered
Commonwealth status: Not listed
Gazetted date: 01 Dec 2017
Profile last updated: 24 Nov 2021


A small, compact, spreading shrub, up to 1 m high growing as a tangle of individual plants/ramets. Leaves are 15–25 mm long, 5–10 mm wide, dark green and glossy, with a paler lower surface.  Flowers are 12–15 mm long, white to yellowish-white with purple to dark mauve markings on the inner surface of the tube.


Known only from Mount Canobolas State Conservation Area, south-west of Orange in central western NSW.

Habitat and ecology

  • There are two known populations within the Mount Canobolas State Conservation Area.
  • The largest population occurs on a protected slope above a creek in shrubby open forest dominated by tall Eucalyptus dalrympleana subsp. dalrympleana, with scattered E. canobolensis and E. dives. The soil is a deep basaltic clay-loam with alluvial deposits on the lower slopes.
  • The second, smaller population, occurs in a steep rock crevice of a trachyte rocky outcrop. The crevice is fed by seepage and the soil is likely to be formed from rock scree and detritus. The surrounding vegetation is heath with the occasional small tree of Exocarpos cupressiformis (native cherry) and Eucalyptus canobolensis.
  • Little is known about the species ecology. Mature plants characteristically form a tangled mass, making it difficult to estimate the numbers of individuals. It readily roots from layered stems and may be clonal, suggesting that genetic diversity within the species is low.
  • The number of mature individuals is extremely low, estimated to be fewer than 50 plants. Both populations were burnt by wildfire in February 2018 and have regenerated from rootstock.
  • Small amounts of ex-situ material is known to be located in botanic gardens.

Regional distribution and habitat

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Recovery strategies

Activities to assist this species

IBRA Bioregion IBRA Subregion Known or predicted Geographic restrictions region