Nature conservation

Threatened species

Ooline - 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: Cadellia pentastylis
Conservation status in NSW: Vulnerable
Commonwealth status: Vulnerable
Profile last updated: 03 Jan 2019


Ooline is a medium-sized spreading tree usually about 10 m tall, and rarely to 25 m. It is very slow-growing. The glossy green leaves are 2 - 4 cm long and 15 - 20 mm wide, with broadly rounded tips. The upper sides of the leaves are darker and glossier than the undersides. The white flowers are small and usually single. Each flower produces a cluster of up to five rounded, brown berries, 3 - 5 mm wide. Cadellia pentastylis is of considerable biogeographic interest as it is a relic of an extensive rainforest vegetation that covered much of Australia in the past.


Occurs along the western edge of the North West Slopes from north of Gunnedah to west of Tenterfield. Also occurs in Queensland. The natural range of Ooline is from 24ºS to 30ºS in the 500 to 750 mm per annum rainfall belt.

Habitat and ecology

  • Appears to flower spasmodically, during a general flowering period of October to January.
  • Dispersal of fruit and seed is probably by “passive fall” or by birds. Seeds showed a high rate of infertility at all sites, although they have been successfully germinated and established after heat application.
  • Forms a closed or open canopy mixing with eucalypt and cypress pine species.
  • There appears to be a strong correlation between the presence of Ooline and low- to medium-nutrient soils of sandy clay or clayey consistencies, with a typical soil profile having a sandy loam surface layer, grading from a light clay to a medium clay with depth.
  • Has the capacity to resprout from rootstock and coppice vigorously from stumps, a feature which may be critical for the species survival in a fire-prone environment.
  • Populations display a variety of age classes including large mature trees, suckering regrowth and seedlings. The total area occupied by Ooline is only about 1200 hectares, with remaining populations in NSW still threatened to various degrees by clearing for agriculture and grazing pressures.

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
Brigalow Belt SouthLiverpool Plains Known None
Brigalow Belt SouthNorthern Basalts Known None
Brigalow Belt SouthNorthern Outwash Predicted None
NandewarKaputar Known None
NandewarNandewar Northern Complex Known None
NandewarPeel Known None
Other StateQLD Known None