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: Grevillea renwickiana
Gazetted date:
06 Dec 2002
Profile last updated:
13 Nov 2024
Description
Nerriga Grevillea is a prostrate, root-suckering shrub, forming extensive patches (over tens of square metres). Leaves are usually narrowly oblong in outline, to 14 cm long and 7 cm wide, with 5 - 18 pungent teeth or lobes; the lower leaf surface is loosely hairy. The flower clusters are erect to slightly curved, and on one axis. The flowers are greenish in late bud, becoming cream to pale pink with a purplish limb; the style is cream becoming pink to reddish with a green tip. Fruiting has not been observed in this species and most populations are represented by a single clone.
Distribution
Restricted to a small area between Mongarlowe (Nettletons Creek) and Nerriga
Habitat and ecology
- G. renwickiana occurs in a range of plant communities: low woodland of one or more of Eucalyptus mannifera, E. radiata, E. pauciflora, E. aggregata, E. dives, E. rossii or Allocasuarina nana heath.
- Especially on sandy or loamy soils fringing damp heath/sedge dominated vegetation and occasionally on ridges in rocky soil
- Apparently an obligate resprouter - fruit and seed are unknown in this species (as they are in some related species)
- Regeneration has been observed after slashing
Regional distribution and habitat
Click on a region below to view detailed distribution, habitat and vegetation information.
Threats
- Locally threatened by pigs.
- Response to fire is unknown - probably resprouts but lack of seed production could be significant in the event of frequent fire.
- Parts of all populations are threatened by roadworks and fire suppression activities.
- Potential for vehicular access to facilitate the spread of pathogens such as Phytophthora.
- Current or potential future land management practices that do not support conservation.
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
7 priority actions
to help recover the Nerriga Grevillea in New South Wales.
Activities to assist this species
- Inform local government, RFS and NPWS staff about populations adjoining roads and tracks to ensure that plants are considered when roadworks and fire suppression activities are planned
- Inform private land owners about the occurrence of this species on their land.
- Control pigs in the Corang River section of Morton National Park (and seek control on adjoining private land)
- Avoid the burning of entire populations and monitor regeneration following planned fires
- Ensure that this species is considered in all planning matters on land that contains or may contain populations
Information sources
- Garven, I. (1985) Field survey of Grevillea renwickiana F. Muell. Unpublished report to National Parks and Wildlife Service.
- NSW Scientific Committee (2002) Grevillea renwickiana (a prostrate shrub) - Endangered species determination - final. DEC (NSW), Sydney.
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