| Acacia filifolia | |
|---|---|
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Fabales |
| Family: | Fabaceae |
| Clade: | Mimosoideae |
| Genus: | Acacia |
| Species: | A. filifolia |
| Binomial name | |
| Acacia filifolia | |
 | |
| Occurrence data from AVH | |
Acacia filifolia is a shrub belonging to the genus Acacia and the subgenus Juliflorae that is endemic to western Australia.
The shrub is wispy and spindly and typically grows to a height of 1.2 to 3 metres (4 to 10 ft). [1] It is either single-stemmed or sparingly branched toward the base of the plant. The straight to slightly flexuose branchlets have resinous ribbing located at the subpendulous extremities. The slender yellow-green phyllodes are ascending and incurved with a quadrangular to subquadrangular shape. The phyllodes have a length of 10 to 25 cm (3.9 to 9.8 in) and a width of 0.7 to 1 mm (0.028 to 0.039 in) and are glabrous with eight broad nerves. [2] It blooms from May to September producing yellow flowers. [1] The simple inflorescences occur singly or in pairs in the axils and have spherical to obloid flower-heads with a length of 6 to 12 mm (0.24 to 0.47 in) and a diameter of 5 to 8 mm (0.20 to 0.31 in) with golden flowers. The linear seed pods that form after flowering have a maximum length of around 12 cm (4.7 in) and are 2.5 to 3 mm (0.098 to 0.118 in) in width. The hairy pods are firmly chartaceous with glabrous yellow coloured margins. The glossy, mottled grey-brown to brown seeds have an oblong-elliptic shape and a length of around 3 mm (0.12 in). [2]
The species was first formally described by the botanist George Bentham in 1842 as part of William Jackson Hooker's work Notes on Mimoseae, with a synopsis of species as published in the London Journal of Botany. It was reclassified as Racosperma filifolium by Leslie Pedley in 2003 then transferred back to genus Acacia in 2006. [3] The specific epithet (filifolia) is derived from the Latin words filum meaning "thread" [4] :797 and folium meaning "a leaf", [4] :466 possibly referring to the slender phyllodes.
It is native to an area in the Wheatbelt region of Western Australia from around Coorow in the north west to around Southern Cross in the south west and has a scattered distribution. It is found on sand plains growing in gravelly to sandy soils around laterite [1] as a part of shrubland communities. [2]
Acacia leptocarpa, commonly known as north coast wattle, is a shrub or small tree native to New Guinea and coastal regions of northern Australia.
Acacia limbata is a shrub belonging to the genus Acacia and the subgenus Juliflorae that is endemic across northern Australia.
Acacia merinthophora, also known as zig-zag wattle, is a tree or shrub belonging to the genus Acacia and the subgenus Juliflorae that is endemic to western Australia.
Acacia multispicata, commonly known as spiked wattle, is a shrub belonging to the genus Acacia and the subgenus Juliflorae that is endemic to south western Australia.
Acacia signata is a tree or shrub belonging to the genus Acacia and the subgenus Juliflorae that is endemic to western Australia.
Acacia wickhamii is a shrub belonging to the genus Acacia and the subgenus Juliflorae that is endemic to parts of northern Australia.
Acacia hastulata is a shrub belonging to the genus Acacia and the subgenus Phyllodineae that is endemic to an area in south western Australia.
Acacia leptospermoides is a shrub belonging to the genus Acacia and the subgenus Phyllodineae and is endemic to a large area of south western Australia.
Acacia obovata is a shrub belonging to the genus Acacia and the subgenus Phyllodineae that is endemic to south western Australia.
Acacia oxyclada is a shrub belonging to the genus Acacia and the subgenus Phyllodineae that is endemic to western Australia.
Acacia retrorsa is a shrub of the genus Acacia and the subgenus Phyllodineae that is endemic to western Australia
Acacia sphacelata is a shrub of the genus Acacia and the subgenus Phyllodineae that is endemic to south western Australia.
Acacia colletioides, commonly known as wait-a-while, pin bush and spine bush, is a shrub of the genus Acacia and the subgenus Plurinerves that is native to Australia.
Acacia juncifolia, commonly known as rush-leaf wattle, is a shrub or tree belonging to the genus Acacia and the subgenus Phyllodineae that is endemic to north eastern Australia.
Acacia perangusta, commonly known as eprapah wattle, is a tree or shrub belonging to the genus Acacia and the subgenus Phyllodineae native to eastern 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.
Acacia nematophylla, commonly known as coast wallowa, is a shrub belonging to the genus Acacia and the subgenus Phyllodineae where it is endemic to southern Australia.
Acacia leptostachya, commonly known as Townsville wattle or slender wattle, is a shrub or small tree belonging to the genus Acacia and the subgenus Juliflorae that is native to north eastern Australia.
Acacia pycnostachya, also known as Bolivia wattle, is a shrub or tree belonging to the genus Acacia and the subgenus Juliflorae that is native to eastern Australia.
Acacia ommatosperma is a shrub of the genus Acacia and the subgenus Plurinerves that is endemic to an area of north western Australia.
