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Species profile—Corymbia clandestina

Classification

Plantae (plants) → Equisetopsida (land plants) → MyrtaceaeCorymbia clandestina

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Species details

Kingdom
Plantae (plants)
Class
Equisetopsida (land plants)
Family
Myrtaceae
Scientific name
Corymbia clandestina (A.R.Bean) K.D.Hill & L.A.S.Johnson
WildNet taxon ID
6441
Alternate name(s)
Drummond Range bloodwood
Nature Conservation Act 1992 (NCA) status
Vulnerable
Environment Protection and Biodiversity Conservation Act 1999 (EPBC) status
Vulnerable
Back on Track (BoT) status
Low
Conservation significant
Yes
Confidential
No
Endemicity
Native
Pest status
Nil
Description
Corymbia clandestina is a small tree growing from 6 to 10 m high with grey, flaky tessellated bloodwood bark on the trunk and branches greater than 3 cm in diameter. The under-bark is yellowish or reddish. The smaller branches are smooth barked. The juvenile leaves are narrow-lanceolate, 5.5 to 10.5 cm long by 0.8 to 1.6 cm wide, and are arranged subopposite along the branch. The petiole is 2 to 4 mm long. The leaves are strongly discolorous, with the upper surface being somewhat glossy and glabrous. The adult leaves are glabrous, more or less glossy and green on the adaxial surface, and paler on the abaxial surface. As with the juvenile leaves, they are lanceolate, 8 to 15 cm long by 1 to 2 cm wide and arranged alternately along the branches. The oil glands are small and scattered. The base is cuneate, apex obtuse to acuminate, and the venation is densely reticulate. The conflorescences are terminal, compound. Umbellasters have 7 white flowers. The peduncles are angular, 5 to 7 mm long. The mature buds are ovoid to clavate, 8mm long and 5 mm wide, smooth and minutely pubescent. The operculum is more or less conical, up to 2 mm long. The fruits are pedicellate, ovoid to urceolate, 1 to 1.4 cm long by 0.7 to 1 cm in diameter with 3 or 4 cavities and deeply enclosed valves. The seeds are brown and up to 8 mm long with a long papery terminal wing (Bean, 1994).
C. clandestina is closely related to both C. lamprophylla and C. arnhemensis. C. clandestina differs from C. lamprophylla by its smaller fruits, longer pedicels and glabrous seedlings beyond node seven. C. clandestina differs from C. arnhemensis by its glabrous seedling leaves between nodes 7 and 12, its persistent bark, and its lack of indumentum on adult foliage. C. clandestina has the smallest fruits of all central Queensland bloodwoods with the exception of C. trachyphloia (Bean, 1994).
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Distribution
Corymbia clandestina is known from two localities, to the north-west and south-west of Clermont, Queensland each with less than 100 plants. Corymbia clandestina occurs at the boundary between the Fitzroy and Burdekin (Queensland) Natural Resource Management Regions. The species occurs within the Blair Athol State Forest (Queensland Herbarium, 2012).
Distributional limits
-22.6901093, 147.3366666
-22.9092761, 147.4938365
Range derivation
Range derived from extent of the taxon's verified records
Habitat
Corymbia clandestina grows on hillsides in reddish to grey loamy soils where it forms a minor component of woodland dominated by Eucalyptus crebra. Other associated species include Corymbia dallachiana, E. melanophloia and Acacia rhodoxylon. Soils have been recorded as skeletal brown clay-loam over mica schist or red gravelly and silty (Queensland Herbarium, 2012).
Reproduction
Corymbia clandestina is known to flower in February, and fruit from April to December (Bean, 1994).
Threatening processes
Corymbia clandestina is known from just two stands, each of less than 100 trees. The species is located within one state forest, but is not recorded within any protected area. The main potential threats to C. clandestina include destruction of habitat due to clearing and destruction of individual plants and disturbance of habitat by timber harvesting and mining exploration (Halford, 1995; DSEWPC, 2012). Over-grazing by domestic stock could also threaten recruitment.
Status notes
Corymbia clandestina is listed as Vulnerable under the Environment and Biodiversity Conservation Act 1999 and Vulnerable under the Queensland Nature Conservation Act 1992.
Management documents
Department of Sustainability, Environment, Water, Population and Communities (DSEWPC) (2012). Corymbia clandestina in Species Profile and Threats Database, Department of Sustainability, Environment, Water, Population and Communities, Canberra. Available from: http://www.environment.gov.au/sprat. Accessed Wed, 7 Mar 2012 11:52:15 +1100.
Halford, D. (1995). Department of Environment and Resource Management. Corymbia clandestina Species Management Profile.
Management recommendations
Regional and local priority actions to support the recovery of Corymbia clandestina are outlined by DSEWPC (2012). A summary of these include: limit habitat loss, disturbance and modification (e.g. monitor known populations to identify key threats, minimise adverse impacts from land use at known sites; identify populations of high conservation priority); increase conservation information (raise awareness of Corymbia clandestina in the local community); and avoid trampling, browsing and grazing (e.g. develop and implement a stock management plan for roadside verges, prevent grazing pressure at known sites through exclusion fencing or other barriers).
Additional management for the protection of C. clandestina includes: the establishment of a protective buffer (0.3ha) that excludes clearing with all C. clandestina at least 30m inside the buffer (Halford, 1995).
Notes
Occurs in the following Queensland pastoral districts: Leichhardt, South Kennedy.
References
Bean, A.R. (1994). Eucalyptus clandestina (Myrtaceae), a new bloodwood from central Queensland. Austrobaileya 4 (2): 205-208.
Department of Sustainability, Environment, Water, Population and Communities (DSEWPC) (2012). Corymbia clandestina in Species Profile and Threats Database, Department of Sustainability, Environment, Water, Population and Communities, Canberra. Accessed 7/03/2012. http://www.environment.gov.au/sprat.
Halford, D. (1995). Corymbia clandestina Species Management Profile. Department of Natural Resources, Brisbane.
Queensland Herbarium (2012). Specimen label information. Queensland Herbarium. Accessed 07/03/2012.
Profile author
Lynise Wearne (06/03/2012)

Other resources

Species Profile and Threats Database (SPRAT)
The Australasian Virtual Herbarium (AVH)
Atlas of Living Australia

Data source

This profile data is sourced from the QLD Wildlife Data API using the Get species by ID function used under CC-By 4.0
https://apps.des.qld.gov.au/species/?op=getspeciesbyid&taxonid=6441

This information is sourced from the WildNet database managed by the Queensland Department of Environment and Science.

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Licence
Creative Commons Attribution 4.0 International (CC BY 4.0)
Last updated
25 January 2022
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