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Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Rosids
Cladus: Eurosids I
Ordo: Fabales

Familia: Fabaceae
Subfamilia: Caesalpinioideae
Tribus: Acacieae
Genus: Acacia
Species: Acacia ixodes

Acacia ixodes Pedley

Austrobaileya. Brisbane, Qld. 1:256. 1980
USDA, ARS, Germplasm Resources Information Network. Acacia ixodes in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 09-Oct-10.

Acacia ixodes, commonly known as motherumbung,[1] is a shrub belonging to the genus Acacia and the subgenus Phyllodineae that is native to parts of eastern Australia.


The shrub typically grows to a height of 2 to 7 m (6 ft 7 in to 23 ft 0 in) and has an erect and spreading habit. It has glabrous and resionous branchlets that are angled or flattened towards the apices.[2] Like most species of Acacia it has phyllodes rather than true leaves. The narrowly elliptic to linear or linear-oblanceolate shaped glabrous to resinous phyllodes are straight to slightly curved with a length of 2.5 to 5 cm (0.98 to 1.97 in) and a width of 2 to 5 mm (0.079 to 0.197 in) and has a prominent midvein with faint lateral veins. It produces yellow flowers between August and November. The simple inflorescences occur singly in the axils and have spherical to ovoid shaped flower-heads with a diameter of 4.5 to 7 mm (0.18 to 0.28 in) containing 20 to 30 bright yellow flowers.[2]

The species was first formally described by the botanist Leslie Pedley in 1980 as part of the work A revision of Acacia Mill. in Queensland as published in the journal Austrobaileya. It was reclassified as Racosperma ixodes by Pedley in 1987 then transferred back to genus Acacia in 2001. The only other synonym is Acacia gnidium var. latifolia.[3] The specific epithet is a reference to the sticky nature of new shoots and immature phyllodes.[2]

The shrub has a wide distribution through central New South Wales extending into Queensland. In New South Wales the bulk of the population is situated between Dubbo to around Gilgandra and Mendooran[2]
See also

List of Acacia species


"Species profile — Acacia ixodes". Queensland Government. Retrieved 23 June 2020.
"Acacia ixodes Pedley". PlantNet. Royal Botanic Garden, Sydney. Retrieved 11 May 2019.
"Acacia ixodes Pedley". Atlas of Living Australia. Global Biodiversity Information Facility. Retrieved 23 June 2020.

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