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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 ensifolia

Acacia ensifolia Pedley

Acacia ensifolia is a tree belonging to the genus Acacia and the subgenus Phyllodineae that is endemic to Queensland.


The tree can grow to a height of up to 9 m (30 ft) and have several stems and has a spreading crown. The pendulous grey-green to green phyllodes have a linear to linear-elliptic shape and are straight or slightly recurved. The phyllodes have a length of 15 to 27 cm (5.9 to 10.6 in) and are 3 to 8 mm (0.12 to 0.31 in) in width with a prominent midrib and margins and obscure lateral nerves.[2] The inflorescences occur in groups of 10 to 15 with spherical flower-heads that have a diameter of 7 to 8 mm (0.28 to 0.31 in) containing 50 to 60 densley packed bright yellow flowers. Following flowering firmly chartaceous, glabrous seed pods form with a white dusty covering. The pods have a length of up to 13 cm (5.1 in) and a width of 10 to 18 mm (0.39 to 0.71 in). The shiny blackish seeds found within the pod have a circular to widely elliptic shape.[2]

The species was first formally described by the botanist Leslie Pedley in 1969 as part of the work Notes on Acacia, chiefly from Queensland published in Contributions from the Queensland Herbarium. Pedley later reclassified it as Racosperma ensifolium in 1986 and it was transferred back to genus Acacia in 2006.[3] A. ensifolia is closely related and appear very similar to Acacia pruinocarpa which is found further to the west, it is also resembles Acacia beckleri.[2]

The tree is found in a small area of South West Queensland and the bulk of the population is found on and around the Gray Range with a scattered distribution extending out to Adavale in the north and to around Thargomindah in the south where it is found on low hills growing in clay loam soils.[2] It is part of mulga shrubland communities and found along eastern border of the Simpson Desert ecoregion.[4]
See also

List of Acacia species


Williams, E. (2017). "Acacia ensifolia". IUCN Red List of Threatened Species. 2017: e.T22484095A22484187. doi:10.2305/IUCN.UK.2017-2.RLTS.T22484095A22484187.en. Retrieved 19 November 2021.
"Acacia ensifolia". World Wide Wattle. Western Australian Herbarium. Retrieved 23 April 2019.
"Acacia ensifolia Pedley". Atlas of Living Australia. Global Biodiversity Information Facility. Retrieved 3 August 2019.
"Acacia ensifolia". IUCN Red List of Threatened Species. Retrieved 23 April 2019.

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