Nature conservation

Threatened species

Caley's Grevillea - 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: Grevillea caleyi
Conservation status in NSW: Critically Endangered
Commonwealth status: Critically Endangered
Gazetted date: 30 May 2014
Profile last updated: 30 Jul 2019


A medium to tall shrub, with long spreading branches, which grows to a height and width of up to 4 m. The divided green leaves are covered in soft, rusty hairs and are up to 15 cm long. The flowers, which open in late winter and spring, have a toothbrush-like appearance with racemes up to 8 cm in length and are dark burgundy-red in colour.


Restricted to an 8 km square area around Terrey Hills, approximately 20 km north of Sydney. Occurs in three major areas of suitable habitat, namely Belrose, Ingleside and Terrey Hills/Duffys Forest within the Ku-ring-gai, Pittwater and Warringah Local Government Areas.

Habitat and ecology

  • All natural remnant sites occur within a habitat that is both characteristic and consistent between sites.
  • All sites occur on the ridgetop between elevations of 170 to 240m asl, in association with laterite soils and a vegetation community of open forest, generally dominated by Eucalyptus sieberi and E. gummifera.
  • Commonly found in the endangered Duffys Forest ecological community.
  • Killed by fire and relies entirely on seed that is stored in the soil for regeneration.
  • Generally seedlings do not flower and produce seed before 2-5 years of age. Flowering is sporadic throughout the year, but with a definite spring pulse.
  • Fecundity is low with only about 3% of flowers result in seed. Seed dispersal is low and predation is high, therefore it is estimated that 8-12 years is required to develop a sufficient seedbank to replace a population.
  • Seed dormancy mechanisms are not fully understood, however it is thought that smoke and perhaps heat may play a role in breaking dormancy.
  • Pollination is by birds although it is thought that this species may be self compatible.

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
Sydney BasinPittwater Known East of Pacific Highway, south of Broken Bay