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.
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click here to see geographic restrictions).
The information presented in this map is only indicative and may contain errors and omissions.
Scientific name: Hibbertia procumbens
Profile last updated:
01 Dec 2017
Description
A prostrate and spreading shrub, with yellow flowers. Leaves are linear to narrowly lance-shaped, 15 - 20 mm long and about 2 mm wide; similar on both surfaces without an obvious midrib and with a pointed tip. Stems smooth, mostly hairless. Stalkless flowers, up to 2 cm in diameter, occur near the ends of branches. Petals five, yellow, 8 - 10 mm long.
Distribution
Within NSW, known from several locations only on the Central Coast in the Gosford and Wyong local government areas. These populations are at Bumble Hill near Yarramalong in Wyong LGA; Kulnura, Strickland State Forest, Mangrove Mountain, Somersby, Calga/Mt White and Peats Ridge in the Gosford LGA; and near Mogo Creek to the west of Mangrove Creek Dam. It has been recorded in four conservation reserves: Yengo, Popran and Brisbane Water National Parks and the non-production Strickland State Forest. Also occurs in Victoria and Tasmania, although investigation is required to verify that the disjunct NSW populations are the same species.
Habitat and ecology
- Majority of known populations occur within Banksia ericifolia–Angophora hispida–Allocasuarina distyla scrub/heath on skeletal sandy soils. May also be found associated with 'hanging swamp' vegetation communities on sandy deposits.
- Flowers in summer.
- Is capable of resprouting following fire and has a persistent soil-stored seed bank.
Regional distribution and habitat
Click on a region below to view detailed distribution, habitat and vegetation information.
Threats
- Susceptible to extinction in NSW from human-induced or random natural events, because of its very restricted distribution, small size and limited genetic base of its total population.
- Inappropriate fire regime; in particular, a too frequent fire regime may prevent recruitment of new individuals to the population, leading over the longer term to decline and local extinction.
- Clearing of native vegetation for agriculture and roads, trails and fire breaks.
- Exotic weed incursion along trails, especially by perennial grasses including Hyparrhenia hirta, Hyparrhenia rufa, whiskey grass, and African lovegrass
- Recreational use of Crown land.
- Unmanaged access including dirt bike use causing soil compaction along informal tracks, as well as disturbance and trampling. Some disturbance is beneficial for the species, but high levels are a threat.
- Damage and disturbance to plants if slashing blades are not raised or machinery is turned directly over individuals. Accidental trampling or clearing as a result of the species being difficult for land managers to identify
- Deer browsing and trampling affecting the species survival.
- Residential and rural land clearing reducing available habitat for the species.
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
16 priority actions
to help recover the Spreading Guinea Flower in New South Wales.
Activities to assist this species
- The ecological requirements of this species and its life cycle, as well as the direct risk to individual specimens/populations, should be considered in bushfire management planning and incorporated into mitigation activities. Identified potential habitat for this species should be similarly treated.
- Research to establish the taxonomic status of the species.
- Modelling to predict potential habitat and survey within that to ascertain the conservation status of the species.
Information sources
- Bell, S. (2002) Habitat of the endangered Hibbertia procumbens (Labill.) DC (Dilleniaceae) from the Central Coast of New South Wales. Vic. Nat. 119(2), 69-74.
- Bell, S. and Driscoll, C. (2003) Population count and assessment of Hibbertia procumbens (Dilleniacae), Maloney VCA, Forest Road, Kulnura. Report to Dept of Environment and Conservation, Threatened Species Unit. Unpublished.
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