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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 pachycarpa

Acacia pachycarpa F.Muell. ex Benth.

Fl. Austral. 2: 408. 1864

Acacia pachycarpa is a tree or shrub belonging to the genus Acacia and the subgenus Juliflorae that is endemic to central and western parts of northern Australia.

The Walmajarri people of the Paruku IPA in the Kimberley call this wattle Parrayari.[1]

The weeping tree or tall bushy shrub typically grows to a height of 2 to 6 metres (7 to 20 ft).[2] with the ultimate branchlets and phyllodes have a pendulous habit. It can have a single or many stems and can form a large crowns when growing in favourable conditions. It has hard dark grey coloured bark that is furrowed on main stems but becomes smooth and light grey on the upper branches. It has brittle, glabrous and grey coloured branches. Like most species of Acacia it has phyllodes rather than true leaves. The evergreen, broadly linear to narrowly elliptic phyllodess have a length of 13 to 34 cm (5.1 to 13.4 in) and a width of 6 to 20 mm (0.24 to 0.79 in). The thinly coriaceous phyllodes resemble a strap and are straight to curved and glabrous with one to five widely spaced main longitudinal nerves with many indistinct minor nerves.[3] It flowers from May to June producing cream-white flowers.[2]

It is native to Pilbara and Kimberley regions of Western Australia[2] with the range extending into western parts of the top end and central parts of the Northern Territory. It has a scattered distribution with the bulk of the population situated in the Tanami Desert straddling the border between Western Australian and the Northern Territory. Disjunct populations are found near Onslow from Yanrey Station to Minderoo Station and around Telfer. It is often found in cracking clay pans and in clay depressions along drainage lines but also in sandy alluvium type soils in minor watercourses and in clay or sandy loam soils.[3]

List of Acacia species


Bessie Doonday; Charmia Samuels; Evelyn (Martha) Clancy; et al. (2013). "Walmajarri plants and animals". Northern Territory Botanical Bulletin. 42: 1–242. Wikidata Q106088428.
"Acacia pachycarpa". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
"Acacia pachycarpa". Wattles of the Pilbara. Department of Environment and Conservation. 2010. Retrieved 31 March 2020.

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