| Acacia retrorsa | |
|---|---|
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Fabales |
| Family: | Fabaceae |
| Clade: | Mimosoideae |
| Genus: | Acacia |
| Species: | A. retrorsa |
| Binomial name | |
| Acacia retrorsa | |
 | |
| Occurrence data from AVH | |
Acacia retrorsa is a shrub of the genus Acacia and the subgenus Phyllodineae that is endemic to western Australia
The spreading prostrate shrub typically grows to a height of 0.05 to 0.5 metres (0 to 2 ft) [1] with a sprawling habit. The multistemmed shrub has quite slender branches with a length of up to 1 m (3 ft 3 in) It has glabrous or slightly hairy, green coloured branchlets that have fine yellow-coloured ribbing. Like most species of Acacia it has phyllodes rather than true leaves. The sessile and evergreen phyllodes are pointing backwards. The pungent, green and glabrous have a linear shape and are straight to shallowly curved with a length of 15 to 25 mm (0.59 to 0.98 in) and a width of 1 to 2 mm (0.039 to 0.079 in) with a prominent midrib. [2] It blooms from August to September and produces yellow flowers. [1] The inflorescences occur on single headed racemes and have spherical flower-heads containing 16 to 24 light golden coloured flowers. The glarous, firmly chartaceous and dark brown seed pods that form after flowering resemble a string of beads and have a length of up to 6 cm (2.4 in) and a width of 3.5 to 4.5 mm (0.14 to 0.18 in). The blackish seeds have a yellow centre and have an oblong to elliptic shape with a length of about 4 mm (0.16 in) and have a club-shaped aril. [2]
The species was first formally described by the botanist Carl Meissner in 1855 as part of the work Botanische Zeitung . It was reclassified as Racosperma retrorsum by Leslie Pedley in 2003 then transferred back to genus Acacia in 2006. [3] It is thought to be allied to the Acacia pravifolia group and superficially resembles Acaca declinata . [2]
It is native to an area in the Wheatbelt and Mid West regions of Western Australia where it is found growing in gravelly, sandy or loamy soils over or around laterite. [1] It has a very limited range between Jurien Bay in the north down to around Eneabba in the south where it is usually as a part of low open woodland or low open heathland communities. [2]
Acacia isoneura is a shrub belonging to the genus Acacia and the subgenus Juliflorae that is endemic to western Australia.
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Acacia stanleyi, commonly known as Stanley's rock wattle, is a shrub belonging to the genus Acacia and the subgenus Juliflorae that is endemic to south western Australia.
Acacia tetraneura is a shrub belonging to the genus Acacia and the subgenus Juliflorae that is endemic to western Australia.
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Acacia hastulata is a shrub belonging to the genus Acacia and the subgenus Phyllodineae that is endemic to an area in south western Australia.
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Acacia oxyclada is a shrub belonging to the genus Acacia and the subgenus Phyllodineae that is endemic to western Australia.
Acacia plautella is a shrub belonging to the genus Acacia and the subgenus Phyllodineae that is endemic to a small area along the coast of western Australia.
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Acacia simulans is a shrub of the genus Acacia and the subgenus Phyllodineae that is endemic to south western Australia.
Acacia spathulifolia commonly known as Gold carpet or the Gold carpet wattle is a shrub of the genus Acacia and the subgenus Phyllodineae that is endemic to coastal parts of western Australia.
Acacia eremaea is a shrub or tree of the genus Acacia and the subgenus Plurinerves that is endemic to an area in western Australia.
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Acacia pelophila is a shrub of the genus Acacia and the subgenus Plurinerves that is endemic to a small area along the west coast of western Australia.
Acacia subsessilis is a shrub of the genus Acacia and the subgenus Plurinerves that is endemic to an area of western Australia.
Acacia vittata, commonly known as Lake Logue wattle, is a shrub of the genus Acacia and the subgenus Plurinerves that is endemic to a small area in western Australia.
Acacia warramaba is a shrub of the genus Acacia and the subgenus Plurinerves that is endemic to an area of south western Australia.
Acacia gracilenta is a shrub belonging to the genus Acacia and the subgenus Juliflorae that is native to north Australia.
