Acacia benthamii

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Acacia benthamii
Status DECF P2.svg
Priority Two — Poorly Known Taxa (DEC)
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fabales
Family: Fabaceae
Clade: Mimosoideae
Genus: Acacia
Species:
A. benthamii
Binomial name
Acacia benthamii
Acacia benthamiiDistMap110.png
Occurrence data from AVH

Acacia benthamii is a shrub of the genus Acacia and the subgenus Plurinerves. It is native to an area along the west coast in the Perth metropolitan region and Wheatbelt region of Western Australia. [1]

<i>Acacia</i> Genus of plants

Acacia, commonly known as the wattles or acacias, is a large genus of shrubs and trees in the subfamily Mimosoideae of the pea family Fabaceae. Initially, it comprised a group of plant species native to Africa and Australia, with the first species A. nilotica described by Linnaeus.

Perth metropolitan region

The Perth metropolitan region or Perth metropolitan area is the administrative area and geographical extent of the Western Australian capital city of Perth and its conurbation.

Wheatbelt (Western Australia) region in Western Australia

The Wheatbelt is one of nine regions of Western Australia defined as administrative areas for the state's regional development, and a vernacular term for the area converted to agriculture during colonisation. It partially surrounds the Perth metropolitan area, extending north from Perth to the Mid West region, and east to the Goldfields-Esperance region. It is bordered to the south by the South West and Great Southern regions, and to the west by the Indian Ocean, the Perth metropolitan area, and the Peel region. Altogether, it has an area of 154,862 square kilometres (59,793 sq mi).

Contents

Description

The shrub typically grows to a height of 1 to 3 metres (3 to 10 ft). [1] It has ribbed glabrous branchlets with new shoots that are minutely woolly and with caducous stipules with a length of 1.5 to 2 mm (0.059 to 0.079 in). The pungent linear green phyllodes are attenuate at both ends and commonly inequilateral and have a length of 2 to 4.5 cm (0.79 to 1.77 in) and a width of 2 to 4 mm (0.079 to 0.157 in) with two or three main nerves per face. [2] It blooms from August to September and produces yellow flowers. [1] The spherical flower-heads have a diameter of 5 mm (0.20 in) and contain 27 to 35 golden flowers that are sharply inflexed. [2]

In botany, stipule is a term coined by Linnaeus which refers to outgrowths borne on either side of the base of a leafstalk. A pair of stipules is considered part of the anatomy of the leaf of a typical flowering plant, although in many species the stipules are inconspicuous or entirely absent. In some older botanical writing, the term "stipule" was used more generally to refer to any small leaves or leaf-parts, notably prophylls.

Phyllode

Phyllodes are modified petioles or leaf stems, which are leaf-like in appearance and function. In some plants, these become flattened and widened, while the leaf itself becomes reduced or vanishes altogether. Thus the phyllode comes to serve the purpose of the leaf.

Taxonomy

The species was first formally described by the botanist Carl Meissner in 1844 in the Johann Georg Christian Lehmann work Plantae Preissianae . [3] [4] It was reclassified as Racosperma benthamii by Leslie Pedley in 2003, but returned to the genus Acacia in 2006. [3] It is closely related to Acacia sessilis and closely resembles Acacia cochlearis . [2]

Carl Meissner Swiss botanist

Carl Daniel Friedrich Meissner was a Swiss botanist.

Johann Georg Christian Lehmann German botanist

Johann Georg Christian Lehmann was a German botanist.

Plantae preissianae sive enumeratio plantarum quas in australasia occidentali et meridionali-occidentali annis 1838-1841 collegit Ludovicus Preiss, more commonly known as Plantae preissianae, is a book written by Johann Georg Christian Lehmann and Ludwig Preiss.

Etymology

The specific epithet, benthamii, honours George Bentham. [4] [5]

George Bentham British botanist

George Bentham was an English botanist, described by the weed botanist Duane Isely as "the premier systematic botanist of the nineteenth century".

Distribution

It is endemic to the west of Western Australia from around Dandaragan in the north [1] to around Subiaco in the south and is commonly found on limestone breakaways. [2]

Dandaragan, Western Australia Town in Western Australia

Dandaragan is a small town in the Wheatbelt region of Western Australia. The name of Dandaragan was first recorded in 1850 as the name of a nearby gulley and spring or watering hole known as Dandaraga spring. The word is Indigenous Australian in origin and is thought to mean good kangaroo country.

Subiaco, Western Australia Suburb of Perth, Western Australia

Subiaco (known colloquially as Subi) is an inner western suburb of Perth, Western Australia, north-west of Kings Park. Its local government area is the City of Subiaco.

Limestone Sedimentary rocks made of calcium carbonate

Limestone is a carbonate sedimentary rock that is often composed of the skeletal fragments of marine organisms such as coral, foraminifera, and molluscs. Its major materials are the minerals calcite and aragonite, which are different crystal forms of calcium carbonate (CaCO3). A closely related rock is dolomite, which contains a high percentage of the mineral dolomite, CaMg(CO3)2. In old USGS publications, dolomite was referred to as magnesian limestone, a term now reserved for magnesium-deficient dolomites or magnesium-rich limestones.

See also

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References

  1. 1 2 3 4 "Acacia benthamii". FloraBase . Western Australian Government Department of Parks and Wildlife.
  2. 1 2 3 4 "Acacia benthamii Meisn". Wattle - Acacias of Australia. Department of the Environment and Energy . Retrieved 22 July 2019.
  3. 1 2 "Acacia benthamii Meisn". Atlas of Living Australia. Global Biodiversity Information Facility . Retrieved 22 July 2019.
  4. 1 2 Meisner, C.D.F. in Lehmann, J.G.C. (ed.) (1844) Leguminosae. Plantae Preissianae 1(1): 11. Retrieved 27 July 2019.
  5. benthamii PlantIllustrations.org. Retrieved 27 July 2019