Nature conservation

Threatened species

Sun Valley Cabbage Gum Forest in the Sydney Basin Bioregion - 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: Sun Valley Cabbage Gum Forest in the Sydney Basin Bioregion
Conservation status in NSW: Critically Endangered Ecological Community
Commonwealth status: Not listed
Gazetted date: 15 Apr 2011
Profile last updated: 07 Sep 2017


Sun Valley Cabbage Gum Forest is dominated by Eucalyptus amplifolia (Cabbage Gum) with E. eugenioides (Thin-leaved Stringybark) as an associated tree. Native understorey species include Acacia parramattensis, Imperata cylindrica, Lomandra longifolia and Pteridium esculentum.


Occurs in the Sun Valley in the Blue Mountains City Council local government area. About 15 hectares of the community remains, mostly in poor condition.

Habitat and ecology

  • Occurs on soils formed from diatremes (pipes of volcanic material) at Sun Valley. Other diatreme substrates in the area support different dominant tree species and do not have Eucalyptus amplifolia.
  • Before disturbance, this community originally formed tall open forest. Much has been cleared for timber and grazing and, although there is still good cover of remnant trees and regeneration is occurring, the trees remaining are often small and young (less than 20 years old) with few older trees. The ground vegetation has also been highly modified by grazing and other disturbance.
  • Disturbed remnants are still considered to form part of the community; these include areas where the vegetation - either ground vegetation, trees or both - would regenerate in response to assistance, such as where the natural soil and associated seedbank are still at least partially intact.

Regional distribution and habitat

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Recovery strategies

Activities to assist this species

Information sources

IBRA Bioregion IBRA Subregion Known or predicted Geographic restrictions region
Sydney BasinWollemi Known None