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Species profile—Acronychia eungellensis


Plantae (plants) → Equisetopsida (land plants) → RutaceaeAcronychia eungellensis

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Species details

Plantae (plants)
Equisetopsida (land plants)
Scientific name
Acronychia eungellensis T.G.Hartley & B.Hyland
WildNet taxon ID
Alternate name(s)
Eungella aspen
Nature Conservation Act 1992 (NCA) status
Near threatened
Back on Track (BoT) status
Conservation significant
Pest status
Acronychia eungellensis is a medium tree that grows to 20 m tall. The trunk at chest height is 30 cm in diameter. The stem has no buttresses. The branchlets are glabrous. The bark is thin (less than 2.5 cm thick), smoothish, with inconspicuous lenticles. The subrhytidome layer is pink-red; the outer blaze is pink and marked with pale longitudinal stripes; the inner blaze is pink and fibrous. The leaves are unifoliate with a petiole which is glabrous, 1 to 1.8 cm long. The leaflets are subcoriaceous, glabrous, elliptic-oblong, 5.5 to 8 cm long and 2 to 3 cm wide. The base of the leaflet is acute to cuneate and the apex is obtuse to rounded. There are 10 to 12 main veins on each side of the mid rib. The inflorescences are arranged in clusters of few to several flowers, 2 to 9 cm in length. Each flower is 7.5 to 8.5 mm long, and has four glabrous, rounded sepals, 1 mm long and 1.7 mm wide; four glabrous petals; and eight stamens. The fruits are rose-red, becoming yellowish at maturity, drying to a reddish brown colour, The fruits are glabrous, with septicidal fissures extending to the base, broadly ovate to elliptic in outline, strongly 4-lobed and about 10 mm wide. The fruit base is truncate and the tip depressed. Within each fruit are several dark reddish brown seeds about 5 mm long (Hartley and Hyland, 1983; Wang, 1999).
The closest relative of A. eungellensis is A. wilcoxiana, the latter differs in having larger leaflets (7 to 21 cm long), shorter pedicels (0.5 to 3mm long) and larger flowers (8.5 to 10 mm long). In addition A. eungellensis is entirely four-carpellate, whereas A. wilcoxiana generally varies from four to six, five to seven, or six to eight. The two species have different distributions (A. eungellensis is found in Eungella Range ; A. wilcoxiana is located from Fraser Island to south of Gosford), (Hartley and Hyland, 1983; Queensland Herbarium, 2011).
Acronychia eungellensis is restricted to central east Queensland where it is only found on the Eungella plateau. It has been found within Eungella National Park and on nearby private land (Hartley and Hyland, 1983; Wang, 1999; Queensland Herbarium, 2011).
Distributional limits
-21.0158333, 148.4927589
-21.1678728, 148.6
Range derivation
Range derived from extent of the taxon's verified records
Acronychia eungellensis grows in notophyll vine forest, 920 to 940 m asl. Annual rainfall is approximately 2000 mm. Parent soil material is granite or rhyolite, with the topsoil grey and loamy. Associated species include Balanops australiana, Beilschmiedia obtusifolia and Elaeocarpus eumundi (Hartley and Hyland, 1983; Wang, 1999; Queensland Herbarium, 2011).
Flowering of Acronychia eungellensis has been recorded in April, June and October. Young fruits have been found in May, October (Wang, 1999; Queensland Herbarium, 2011).
Threatening processes
Potential threatening processes for Acronychia eungellensis include the clearance of habitat on private land (Wang, 1999).
Status notes
Acronychia eungellensis is listed as Near Threatened under the Queensland Nature Conservation Act 1992.
Management documents
Wang, J (1999). Acronychia eungellensis Species Management Profile, Department of Natural Resources, Queensland.
Management recommendations
Management recommendations for the protection of Acronychia eungellensis and its habitat include the establishment of a protective buffer (0.3 ha) that excludes clearing in A. eungellensis areas (Wang, 1999).
Occurs in the following Queensland pastoral districts: South Kennedy (Bostock and Holland, 2010).
Hartley, T.G. and Hyland, B.P.M (1983). A new species of Acronychia (Rutaceae) from Australia. Austrobaileya 1 (5):451-454.
Queensland Herbarium (2011). Specimen label information. Queensland Herbarium. Accessed 21/07/2011.
Wang, J. (1999). Acronychia eungellensis Species Management Profile. Department of Natural Resources, Brisbane.
Profile author
Lynise Wearne (22/06/2012)

Other resources

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

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

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