Indicative distribution
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: Hibbertia puberula
Gazetted date:
12 Sep 2003
Profile last updated:
29 Jul 2019
Description
Shrublets with few spreading but ultimately wiry branches up to 30 cm long, sparsely branched, pubescent, often becoming hairless. Leaves oblong-lanceolate to almost linear, 3 - 6 mm long, 0.8 - 1.4 mm wide, acute, sometimes becoming obtuse, abruptly constricted into petiole. Flowers yellow, single or rarely in a cluster of up to three. Outer calyx lanceolate to ovate with strongly recurved margins and a distinctly raised central ridge near the apex, strigose or hirsute to rarely puberulous. Inner calyx broadly elliptic to oblong ovate, with innermost two acute to - cuspidate above broad membranous margins, hirsute to strigose, rarely pubescent along the central ridge, becoming smaller to glabrous towards the margins. Stamens (9-)10-14(-18), with anthers 1.3-2.1mm long.
Distribution
Recent work on this species (Toelken & Miller 2012) and its relatives have shown it to be widespread, but never common. It extends from Wollemi National Park south to Morton National Park and the south coast near Nowra. Early records of this species are from the Hawkesbury River area and Frenchs Forest in northern Sydney, South Coogee in eastern Sydney, the Hacking River area in southern Sydney, and the Blue Mountains. It favours low heath on sandy soils or rarely in clay, with or without rocks underneath (Toelken & Miller 2012).
Habitat and ecology
- Flowering time is October to December, sometimes into January.
- Occurs on sandy soil often associated with sandstone, or on clay.
- Habitats are typically dry sclerophyll woodland communities, although heaths are also occupied. One of the recently (2012) described subspecies also favours upland swamps.
Regional distribution and habitat
Click on a region below to view detailed distribution, habitat and vegetation information.
Threats
- Loss of habitat.
- Likely to be threatened by demographic and environmental stochasticity.
- Potential for damage to habitat / individuals by illegal trailbikes, 4WDs and mountain bikes.
- The species is likely to be more prevalent than current records suggest; identifying additional populations would greatly increase future viability of the species.
- High densities of weeds and invasive grasses occur at the top of ridgelines; significant potential for encroachment into areas where the species occurs.
- Potential that the land will be developed for residential and industrial purposes.
- Potential for widening of major roads to affect populations of the species.
- Road maintenace and slashing works.
- One of the subspecies (ssp. extensa) occurs in areas subject to underground mining and is known from rock shelves and upland swamps.
Recovery strategies
Priority actions are the specific, practical things that must be done to recover a threatened species, population or ecological
community. The Office of Environment and Heritage has identified
6 priority actions
to help recover the Hibbertia puberula in New South Wales.
Activities to assist this species
- Protect habitat from clearing and disturbance.
- Undertake targeted surveys.
- Identify sites for subspecies extensa that are likely to be affected by activities.
- Identify to relevant authorities areas of occurrence to ensure species persistence in programmed fire regime.
Information sources
- NSW Scientific Committee (2003) Hibbertia puberula - Endangered species determination - final. DEC (NSW), Sydney.
- Toelken, H.R. (2000) Notes on Hibbertia (Dilleniaceae) 3. H. sericea and associated species. Journal of Adelaide Botanic Garden 19, 1-54.
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