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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The information presented in this map is only indicative and may contain errors and omissions.
Scientific name: Eucalyptus caleyi subsp. ovendenii
Profile last updated:
21 Nov 2018
Description
Eucalyptus caleyi is one of a group of related rough-barked species which have concolorous (uniform in colour) adult leaves. It is a medium-sized tree 25 m tall with grey-black, hard, rough and deeply corrugated bark. Its leaves are dull blue-green. The adult leaves are narrower than the juvenile leaves, being 1 - 4 cm wide and 5 - 10 cm long. The gumnuts are egg- or pear-shaped, 6 - 12 mm long and 5 - 7 mm in diameter, and grow in groups of seven. Ovenden’s Ironbark is distinguished from the closely related Caley’s Ironbark (Eucalyptus caleyi subsp. caleyi) by its four-angled buds and gumnuts. [The two subspecies overlap distributions in parts of their range with Ovenden's Ironbark typically occupying higher elevations.]
Distribution
Eucalyptus caleyi subsp. ovendenii occurs from west of Guyra to west of Tenterfield on the New England Tablelands of NSW. Localities include ‘Moorabinda’ station and the western half of Torrington State Conservation Area.
Habitat and ecology
- Grows in grassy woodland on dry, shallow soils of moderate fertility.
- Preferred altitudes are 610 to 820 m, on granitic substrates. Ovenden's Ironbark occupies a higher geographical range than that of subspecies caleyi, occurring on the crests of broad high ridges and replacing subspecies caleyi inhabiting the lower slopes in the same general area.
- Associated species include Eucalyptus melliodora, Eucalyptus dealbata, Eucalyptus albens, Eucalyptus melanophloia and Geijera parviflora.
- Flowering occurs from July to September, with fruits having a distinctly square cross-section.
- Can be locally abundant within its grassy woodland habitat. Juveniles were present in about half the sampled sites within Torrington State Conservation Area, indicating good recruitment.
Regional distribution and habitat
Click on a region below to view detailed distribution, habitat and vegetation information.
Threats
- Clearing and fragmentation of grassy woodland habitat for agriculture.
- Invasion of habitat by introduced grasses such as Coolatai Grass, which can prevent seedling establishment.
- Frequent fire and high intensity fire may reduce populations and kill young regenerating trees.
- Grazing pressure from domestic stock.
- This species has a highly restricted distribution placing it at risk of extinction from stochastic events, ongoing threats to sub-populations and climate change.
- Clearing for agricultural infrastructure.
- Insufficient understanding of distribution and/or abundance
- Insufficient understanding of species/community ecology
- Insufficient understanding of species phylogeny
Recovery strategies
A Saving Our Species conservation project is currently being developed for this species and will be available soon. For information on how you can contribute to this species' recovery, see the Activities to assist this species section below.
Activities to assist this species
- Support local Landcare groups raise the profile of the species and undertake onground management actions.
- Protect populations of Ovenden’s Ironbark from frequent fire.
- Control invasive exotic grasses such as Coolatai Grass in areas of habitat.
- Protect known populations and areas of potential habitat from clearing fragmentation or disturbance.
- Expand and reconnect isolated remnants of habitat.
- Rehabilitate and protect degraded areas of habitat.
- Report any new records of the species to the Office or Environment and Heritage.
- Maintain viable exsitu seedbank or living collection.
- Undertake survey to identify unrecorded populations.
- Monitor population dynamics and threats of known populations.
- Undertake research into ecological requirements of the species including fire ecology and recruitment requirements.
Information sources
- Briggs, J.D. and Leigh, J.H. (1996) Rare or Threatened Australian Plants. Revised Edition. (CSIRO Publishing, Melbourne)
- Brooker, M. and Kleinig, D.A. (1999) Field guide to eucalypts, Volume 1: South-eastern Australia. 2nd edn. Blooming Books, Hawthorn.
- Brooker, M.I.H. (2000) A New Classification of the Genus Eucalyptus L’Hér. (Myrtaceae). Australian Systematic Botany 13(1): 79-148
- Chippendale, G.M. (1988) 1. Eucalyptus. 509. Eucalyptus caleyi Maiden. In George, A.S. (Ed) Flora of Australia 19: 420.
- Hill, K.D. (2002) Eucalyptus. In Harden, G.J. (ed.) Flora of New South Wales. Volume 2. Revised Edition. (New South Wales University Press: Sydney).
- Hill, K.D. and Johnson, L.A.S. (1991) Systematic studies in the eucalypts – 3. New taxa in Eucalyptus (Myrtaceae). Telopea 4(2): 223-67.
- Hunter, J.T., Clarke, P.J., Copeland, L.M., Nano, C.E., Williams, J.B. and Wills, K.E. (1998) The Vegetation and Plant Species of Torrington State Recreation Area (Division of Botany, University of New England, Armidale).
- NSW National Parks and Wildlife Service (2003) Threatened Species of the New England Tablelands and North West Slopes of NSW. (NSW NPWS, Coffs Harbour)
- NSW National Parks and Wildlife Service (2003) Torrington State Conservation Area Plan of Management.
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