Acacia semicircinalis

Wongan wattle
Conservation status
	; Priority Four — Rare Taxa (DEC)
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Fabales
Family:	Fabaceae
Clade:	Mimosoideae
Genus:	Acacia
Species:	A. semicircinalis
Binomial name
	Acacia semicircinalis; Maiden & Blakely
	Occurrence data from AVH

Last updated March 11, 2021

Acacia semicircinalis commonly known as Wongan wattle or Wongan sprawling wattle, is a shrub of the genus Acacia and the subgenus Phyllodineae that is endemic to a small area in western Australia. The species was once listed as a threatened species according to the Environment Protection and Biodiversity Conservation Act 1999 but was removed in 2006.^[1]

Description

The wiry diffuse shrub typically grows to a height of 0.3 to 1.0 metre (1 to 3 ft)^[2] and can have a ground-hugging or upright habit with sprawling, light to reddish-brown coloured branches.^[1] It blooms from August to January and produces yellow flowers.^[2] The simple inflorescences occur singly or in pairs in the axils and are made up of spherical flower-heads composed of 25 bright golden yellow flowers. Following flowering it produced linear to slightly curved seed pods that have a length of about 6 cm (2.4 in) and a width of 6 mm (0.24 in).^[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 semicircinale by Leslie Pedley in 2003 then returned to genus Acacia in 2005.^[3]

Distribution

It is native to a small area in the Wheatbelt region of Western Australia where it is commonly situated on hillslopes growing in gravelly lateritic soils.^[2] It has a very limited range in the Wongan Hills area where it is thought to be an opportunist in disturbed areas that is long living. It is usually found as a part of Mallee and Acacia shrubland communities that is often found with Allocasuarina campestris , Petrophile shuttleworthiana , Eucalyptus longicornis , Acacia acanthoclada , Acacia lasiocarpa and Acacia pulchella .^[1] In 2006 there was an estimated 10,400 mature individual plants situated within fifteen separate populations found over an area of approximately 60 km² (23 sq mi).^[4]

Related Research Articles

Acacia denticulosa, commonly known as sandpaper wattle, is a species of Acacia native to the south-west of Western Australia. A spindly shrub 1–4 m high, it flowers from September to October, producing dense, curved, yellow flower spikes.

Acacia brachypoda, known colloquially as western wheatbelt wattle or Chinocup wattle, is an endangered species of Acacia restricted to a small locality in western Australia's wheatbelt.

Acacia eriopoda, commonly known as the Broome pindan wattle and the narrow-leaf pindan wattle, is a species of wattle in the legume family that is native to northern Western Australia. It is also known as Yirrakulu to the Nyangumarta peoples.

Acacia ancistrocarpa, commonly known as fitzroy wattle, is a shrub belonging to the genus Acacia and the subgenus Juliflorae. The shrub is also known as fish hook wattle, pindan wattle and shiny leaved wattle.

Acacia jibberdingensis, also known as Jibberding wattle or willow-leafed wattle, is a shrub or tree belonging to the genus Acacia and the subgenus Juliflorae that is endemic to Western Australia.

Acacia calcarata is a shrub belonging to the genus Acacia and the subgenus Phyllodineae.

Acacia excentrica is a shrub belonging to the genus Acacia and the subgenus Phyllodineae native to Western Australia.

Acacia leptalea, commonly known as Chinocup wattle, is a shrub belonging to the genus Acacia and the subgenus Phyllodineae that is endemic to a small area in south western Australia. It is listed as threatened according to the Environment Protection and Biodiversity Conservation Act 1999.

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 phaeocalyx is a shrub belonging to the genus Acacia and the subgenus Phyllodineae that is endemic to south western Australia.

Acacia pygmaea, commonly known as the dwarf rock wattle, is a shrub of the genus Acacia and the subgenus Phyllodineae that is endemic to south western Australia.

Acacia vassalii, commonly known as Vassal's wattle, is a shrub of the genus Acacia and the subgenus Phyllodineae that is endemic to a small area of south western Australia. It is listed as critically endangered with the World Conservation Union, as endangered according to the Environment Protection and Biodiversity Conservation Act 1999 and as rare flora with the Wildlife Conservation Act 1950 in Western Australia.

Acacia fragilis is a shrub of the genus Acacia and the subgenus Plurinerves that is endemic to south western Australia.

Acacia helmsiana, commonly known as Helm's wattle, is a shrub of the genus Acacia and the subgenus Plurinerves that is endemic to arid areas of central and western Australia.

Acacia lanuginophylla, or woolly wattle, is a shrub of the genus Acacia and the subgenus Plurinerves that is endemic to south western Australia. It is currently listed as a vulnerable species according to the Environment Protection Biodiversity Conservation Act 1999.

Acacia lobulata, commonly known as Chiddarcooping wattle, is a shrub of the genus Acacia and the subgenus Plurinerves that is endemic to a small area of south western Australia. It was declared as rare flora in 1997 and is now listed a Endangered under the Environment Protection and Biodiversity Conservation Act 1999.

Acacia obtecta is a shrub of the genus Acacia and the subgenus Plurinerves that is endemic to a small area in south western Australia.

Acacia pharangites, commonly known as Wongan gully wattle, is a shrub of the genus Acacia and the subgenus Plurinerves that is endemic to a small area of south western Australia and is listed as endangered according to the Environment Protection and Biodiversity Conservation Act 1999.

Acacia confluens, commonly known as wyrilda, is a shrub belonging to the genus Acacia and the subgenus Phyllodineae that is endemic to central Australia.

Acacia gracilifolia, commonly known as graceful wattle, is a shrub belonging to the genus Acacia and the subgenus Plurinerves native to a small area of central southern Australia.

References

1 2 3 4 "Acacia semicircinalis — Wongan Wattle". Species Profile and Threats Database. Department of Agriculture, Water and the Environment . Retrieved 17 August 2020.
1 2 3 "Acacia semicircinalis". FloraBase . Western Australian Government Department of Parks and Wildlife.
↑ "Acacia semicircinalis Maiden & Blakely". Atlas of Living Australia. Global Biodiversity Information Facility . Retrieved 17 August 2020.
↑ "Acacia semicircinalis (Wongan Wattle)" (PDF). Advice to the Minister for the Environment and Heritage from the Threatened Species Scientific Committee. Department of Environment. Retrieved 17 August 2020.

This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.

[sprat-1] 1 2 3 4 "Acacia semicircinalis — Wongan Wattle". Species Profile and Threats Database. Department of Agriculture, Water and the Environment . Retrieved 17 August 2020.

[FloraBase-2] 1 2 3 "Acacia semicircinalis". FloraBase . Western Australian Government Department of Parks and Wildlife.

[3] "Acacia semicircinalis Maiden & Blakely". Atlas of Living Australia. Global Biodiversity Information Facility . Retrieved 17 August 2020.

[advice-4] "Acacia semicircinalis (Wongan Wattle)" (PDF). Advice to the Minister for the Environment and Heritage from the Threatened Species Scientific Committee. Department of Environment. Retrieved 17 August 2020.

[1]

[2]

[3]

[4]