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Acacia alleniana Maiden (AM AK74869)

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 alleniana

Acacia alleniana Maiden in Ewart & Davies, Fl. N. Terr. 330 (1917).

Racosperma allenianum (Maiden) Pedley

Native distribution areas:
Acacia alleniana

Continental: Australasia
Regional: Australia
Northern Territory, Queensland

References: Brummitt, R.K. 2001. TDWG – World Geographical Scheme for Recording Plant Distributions, 2nd Edition
Primary references

Ewart, A.J. & Davies, O.B. 1917. The Flora of the Northern Territory. Melbourne, McCarron, Bird & Co. BHL Reference page. : 330.


Govaerts, R. et al. 2020. Acacia alleniana in Kew Science Plants of the World online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the internet. Accessed: 2020 Jul 24. Reference page.
International Plant Names Index. 2019. Acacia alleniana. Published online. Accessed: Jul 24 2019. 2019. Acacia alleniana. Missouri Botanical Garden. Published on the internet. Accessed: 2019 Jul 24.
Hassler, M. Jul. Acacia alleniana. World Plants: Synonymic Checklists of the Vascular Plants of the World In: Roskovh, Y., Abucay, L., Orrell, T., Nicolson, D., Bailly, N., Kirk, P., Bourgoin, T., DeWalt, R.E., Decock, W., De Wever, A., Nieukerken, E. van, Zarucchi, J. & Penev, L., eds. Jul. Species 2000 & ITIS Catalogue of Life. Published on the internet. Accessed: Jul 24 {{{3}}}. Reference page.

Vernacular names

Acacia alleniana is a shrub or tree belonging to the genus Acacia and the subgenus Phyllodineae endemic to northern parts of Australia.


The shrub or tree has a spindly open habit and typically grows to a height of around 5 metres (16 ft). It has pendulous branches and red-brown coloured slender branchlets. The filiform, terete to quadrangular, phyllodes have a length of 12 to 24 cm (4.7 to 9.4 in) and a width of 0.5 to 0.8 mm (0.020 to 0.031 in).[1] The simple inflorescences have spherical flower-heads that contain around 35 yellow coloured flowers. The linear brown seed pods that form after flowering are raised over seeds alternately. The pods have a length of up to 15 cm (5.9 in) and a width of 3.5 to 5 mm (0.14 to 0.20 in). The turgid, dull brown seeds inside have an oblong to elliptic shape and are 4 to 6 mm (0.16 to 0.24 in) in length and 2 to 2.5 mm (0.079 to 0.098 in) wide.[1]

The species was first formally described by the botanists A.J.Ewart and O.B.Davies in 1917 as part of the work by Joseph Maiden Appendix IV: Acacias of the Northern Territory as published in The Flora of the Northern Territory. It was reclassified as Racosperma allenianum by Leslie Pedley in 1987 then transferred back to the genus Acacia in 2001. The shrub is often misidentified as Acacia juncifolia and also as Acacia tenuissima.[2] The species is closely related to Acacia jasperensis and Acacia juncifolia.[1]

It is native in the Northern Territory from around Darwin south and east in Arnhem Land and on many of the islands in the Gulf of Carpentaria. Its range extends into far north-western Queensland where it is found on hills and sandstone slopes growing in skeletal sandy soils.[1]
See also

List of Acacia species


"Acacia alleniana". World Wide Wattle. Western Australian Herbarium. Retrieved 6 April 2019.
"Acacia alleniana Maiden". Atlas of Living Australia. Global Biodiversity Information Facility. Retrieved 6 April 2019.

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