Nature conservation

Threatened species

Illawarra Lowlands Grassy Woodland 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: Illawarra Lowlands Grassy Woodland in the Sydney Basin Bioregion
Conservation status in NSW: Endangered Ecological Community
Commonwealth status: Critically Endangered
Gazetted date: 24 Dec 1999
Profile last updated: 15 Oct 2020


This community comprises vegetation types that occupy the Illawarra coastal plain and escarpment foothills. Characteristic tree species include Forest Red Gum Eucalyptus tereticornis, Thin-leaved Stringybark Eucalyptus eugenioides, Woollybutt Eucalyptus longifolia, Coast Grey Box Eucalyptus bosistoana and White Feather Honey-myrtle Melaleuca decora. The understorey is not necessarily grassy as moist forest vegetation types are also included within this broad community. Common shrub species include Acacia mearnsii and Dodonaea viscosa subsp. angustifolia. Floodplain vegetation dominated by Casuarina species or rainforests on latite soils are not part of this community.


Recorded from the local government areas (LGAs) of Wollongong, Shellharbour and Kiama, and Shoalhaven. Not recorded within formal conservation reserves, although some remnants occur in small council reserves including Blackbutt Reserve and Croome Road Reserve in Shellharbour LGA.

Habitat and ecology

  • Occurs in near coastal areas below about 200 metres on gently undulating terrain.
  • Occurs on Berry Siltstone, Budgong Sandstone and Quaternary Alluvium.
  • Much of this community has been cleared and it now occurs chiefly as scattered fragments.
  • Provides habitat for the endangered orchid Pterostylis gibbosa.
  • Some remnants consist of regrowth after clearing or other disturbances.

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 BasinIllawarra Known Wollongong, Kiama, Shellharbour and Shoalhaven LGAs
Sydney BasinJervis Known None