| Hook-leaved acacia | |
|---|---|
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Fabales |
| Family: | Fabaceae |
| Subfamily: | Caesalpinioideae |
| Clade: | Mimosoid clade |
| Genus: | Acacia |
| Species: | A. oncinophylla |
| Binomial name | |
| Acacia oncinophylla | |
 | |
| Occurrence data from AVH | |
Acacia oncinophylla, commonly known as hook-leaved acacia, [1] is a shrub belonging to the genus Acacia and the subgenus Juliflorae.
The shrub typically grows to a height of 0.5 to 3 metres (2 to 10 ft) [2] and has minni ritchi style bark and flattened and angular ribbed branchlets that are glabrous or sparsely hairy on ribs and are sometimes coated with a white powdery coating. Like most species of Acacia, it has phyllodes rather than true leaves. The evergreen phyllodes have a linear or linear-oblanceolate shape and can be either straight or curved. The glabrous, flexible, or semi-rigid phyllodes have a length of 4 to 13 cm (1.6 to 5.1 in) and a width of 1 to 6 mm (0.039 to 0.236 in) with an acute to acuminate apex and have three to seven raised nerves on each face. [1] It flowers from August to September, producing yellow flowers. [2] The simple inflorescences are found in pairs in the axils and have cylindrical flower spikes with a length of 11 to 25 mm (0.43 to 0.98 in) and a diameter of 5 to 6 mm (0.20 to 0.24 in) and are densely packed with 50 to 97 golden-coloured flowers. After flowering golden to silver-coloured velvety seed pods form that have a linear shape and are straight to very slightly curved. The pods have a length of up to 6 cm (2.4 in) and a width of 5 to 6 mm (0.20 to 0.24 in) with obliquely arranged seeds inside. The glossy black seeds have a broadly elliptic shape and a length of 3 to 3.5 mm (0.12 to 0.14 in) with an apical aril. [1]
The species was first formally described by the botanist John Lindley in 1839.
There are two recognised subspecies:
It is quite closely related to Acacia fauntleroyi , which is found further east. [1]
It is native to the Swan Coastal Plain and South West regions of Western Australia where it is commonly situated on hills andslopes growing in granitic or lateritic soils. [2] It is found from around Mogumber in the north and down the Darling Range to around Wagerup in the south, often as a part of jarrah woodland communities. [1]
Acacia latior is a shrub belonging to the genus Acacia and the subgenus Juliflorae that is endemic to western Australia.
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Acacia lirellata is a shrub belonging to the genus Acacia and the subgenus Juliflorae that is endemic to south western Australia.
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Acacia oldfieldii is a shrub belonging to the genus Acacia and the subgenus Juliflorae that is endemic to western Australia.
Acacia oncinocarpa is a shrub or tree belonging to the genus Acacia and the subgenus Juliflorae that is endemic to northern Australia.
Acacia signata is a tree or shrub belonging to the genus Acacia and the subgenus Juliflorae that is endemic to western Australia.
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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 sphacelata is a shrub of the genus Acacia and the subgenus Phyllodineae that is endemic to south 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.
Acacia inceana is a shrub or tree of the genus Acacia and the subgenus Plurinerves that is endemic to south western Australia.
Acacia kenneallyi is a shrub or tree of the genus Acacia and the subgenus Plurinerves that is endemic to north western Australia.
Acacia nyssophylla, commonly known as pin bush, wait a while and spine bush, is a shrub of the genus Acacia and the subgenus Plurinerves that is endemic to a large area of central and south-western and southern Australia.
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 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 uncinella is a shrub of the genus Acacia and the subgenus Plurinerves that is endemic to an area of south western Australia.
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