Acacia pachyacra

Acacia pachyacra is a tree or shrub belonging to the genus Acacia and the subgenus Phyllodineae. that is endemic to arid parts of central and western Australia.

Acacia pachyacra
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fabales
Family: Fabaceae
Clade: Mimosoideae
Genus: Acacia
Species:
A. pachyacra
Binomial name
Acacia pachyacra
Occurrence data from AVH

Description

The bushy slender tree or shrub typically grows to a height of 1 to 5 metres (3.3 to 16.4 ft).[1] It branches near or atnnear ground level into a few erect to ascending main stems. It has a soft, dense canopy that produces a hissing sound in windy conditions much the same as a Sheoak (Casuarina or Allocasuarina) or Athol Pine (Tamarix) would. It has smooth greenish bronze or reddish brown coloured bark that is often covered in a fine white powdery coating that is grey and roughened near the base of the trunks.[2] It blooms from August to October and produces yellow flowers.[1]

Taxonomy

The species was first formally 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 as published in the Journal of the Royal Society of Western Australia. It was reclassified as Racosperma pachyacrum by Leslie Pedley in 2003 then returned to genus Acacia in 2006.[3] The specific epithet is taken from Greek words pachys meaning thick and akron meaning top in reference to the thicken mucro at the end of the phyllodes.[2]

Distribution

It is native to an area in the Pilbara and Goldfields regions of Western Australia.[1] Its range extends from coastal areas of the western Pilbara to around the Docker River then further east into the Northern Territory and to far north western South Australia. In Western Australia it is mostly located in the Hamersley and Ophthalmia Ranges where it is commonly situated on dunes or plains growing in sandy soils but also will grow in rocky red loamy soils with a pebble and along ridges of banded ironstone often in spinifex communities and can form forms dense thickets in alluvial washes.[2]

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See also

References
  1. "Acacia pachyacra". FloraBase. Western Australian Government Department of Parks and Wildlife.
  2. "Acacia pachyacra". Wattles of the Pilbara. Department of Environment and Conservation. 2010. Retrieved 17 July 2020.
  3. "Acacia pachyacra Maiden & Blakely". Atlas of Living Australia. Global Biodiversity Information Facility. Retrieved 17 July 2020.
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