Acacia abrupta

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 abrupta
Name

Acacia abrupta Maiden & Blakely,
Synonyms

Racosperma abruptum (Maiden & Blakely) Pedley

Distribution
Native distribution areas:
Acacia abrupta

Continental: Australasia
Regional: Australia
Northern Territory, Western Australia

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

Maiden, J.H. & Blakely, W.F., 1927. Journal of the Royal Society of Western Australia 13: 6.

Links

Govaerts, R. et al. 2020. Acacia abrupta 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 23. Reference page.
International Plant Names Index. 2019. Acacia abrupta. Published online. Accessed: Jul 23 2019.
Tropicos.org 2019. Acacia abrupta. Missouri Botanical Garden. Published on the internet. Accessed: 2019 Jul 23.
Hassler, M. Jul. Acacia abrupta. 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 23 {{{3}}}. Reference page.

Vernacular names

Acacia abrupta is a shrub of the genus Acacia and the subgenus Plurinerves that is endemic to arid parts of central and western Australia.

Description

The spreading resinous shrub typically grows to a height of 0.6 to 3 metres (2 to 10 ft).[3] The glabrous shrub has light grey coloured bark. The dark green, ascending to erect and incurved phyllodes are usually 3 to 5 cm (1.2 to 2.0 in) in length but can reach as long as 9 cm (3.5 in) and have a width of 0.5 to 1 mm (0.020 to 0.039 in).[4] It blooms from July to September and produces yellow flowers.[3] The simple inflorescences simple occur singly in the axils and have spherical flower-heads containing 25 to 35 golden coloured flowers. The linear brown seed pods that form after flowering are shallowly constricted between the seeds and a biconvex shape with a length of up to 5 cm (2.0 in) and a width of around 2.5 to 3 mm (0.098 to 0.118 in).[4]

Taxonomy

The species was originally described by the botanists Joseph Maiden and William Blakely in 1927 as part of the work Descriptions of fifty new species and six varieties of western and northern Australian Acacias, and notes on four other species published in Journal and Proceedings of the Royal Society of Western Australia. The only known synonym for the plant Racosperma abruptum as described by Pedley in 2003.[5]

A. abrupta belongs the Acacia wilhelmiana group and is closely related to Acacia ascendens . It can be mistaken for Acacia helmsiana which shares the same habitat.[4]

Distribution

It is native to an area in the Pilbara and Goldfields region of Western Australia where it is found on and among sand dunes, sandplains and on gravelly hillslopes growing in red sandy lateritic based soils.[3] The species has a scattered distribution from around Newman in the west extending east through the Pilbara and Great Sandy and Gibson Deserts across the border into the Northern Territory to around Lake Amadeus in the east usually as a part of spinifex communities.[4]